Full List: Loudspeaker & Monitor Specifications w/ Examples
Loudspeakers come in a wide variety of designs and are defined by a rather large amount of specifications. We can learn a lot about a speaker before ever plugging it in and/or connecting it to an amplifier by reading its specifications or datasheet.
What are loudspeaker specifications? Loudspeaker specifications, shown on spec/data sheets, are pieces of information that tell us the electrical, mechanical, acoustic and physical characteristics of a speaker and how a speaker ought to perform.
Note that, depending on the loudspeaker, different specifications will apply and that no loudspeaker will have ratings for every specification mentioned in this post.
In this article, we'll describe each of these specifications and what they mean to the overall functionality of the loudspeaker in question!
Related My New Microphone articles:
• The Ultimate Loudspeaker Buyer’s Guide
• Top 10 Best Loudspeaker Brands (Overall) On The Market Today
Loudspeaker Specifications
There is an abundance of loudspeaker specifications due to the abundance of speaker types and designs.
I will list out all the potential specifications you may find on a speaker's data sheet and describe each of them on a surface level. I will also add real-world examples of speakers that have the specifications mentioned.
Links to more in-depth discussions on critical specifications will be added.
In order to provide real-world examples of each specification, I've collected a series of datasheets from specific speakers of various types. The examples are listed below:
The included links will bring you to the bottom of this article, where each of the speakers is described in more detail, with all their specifications laid out as a reference.
Alternatively, you can skip to the section Speaker Examples For This Article by clicking the link.
Without further ado, let's jump into the speaker specifications!
List Of Speaker Specifications
- Model Number
- Features
- Configuration/Type
- Frequency Response
- Frequency Range
- Usable Frequency Range
- Sensitivity
- Power Handling
- Maximum SPL
- Amplifier Power Output
- Drivers/Transducers
- Impedance
- Components
- Crossover Frequency
- Crossover
- Recommended Crossover
- Recommended HP Frequency
- Coverage/Dispersion
- Connectors
- Common-Mode Rejection Ratio
- Maximum Input Level
- Recommended Amplifier Power
- Infrasonic Filter Frequency/Slope
- Self-Generated Noise
- Signal-To-Noise Ratio
- Total Harmonic Distortion
- Digital Input/Output
- Enclosure Type
- Box Tuning Frequency
- Grille
- Material
- Dimensions
- Mounting
- Weight
- Finish
- Color
- Controls
- Indicators
- Cooling
- Protection
- AC Power Input/Supply
- AC Power Consumption
- Waterproof
- Temperature
- Relative Humidity
- Thiele-Small Parameters
- B: Magnetic Flux Density In Gap
- BL: BL Product
- Cas: Driver's Acoustic Compliance
- Cmes: Electrical Capacitance Including Air-Load
- Cms: Mechanical Compliance Of Suspension
- D: Driver Diameter
- EBP: Efficiency Bandwidth Product
- F3: -3 dB Cutoff Frequency
- Fb: Resonance Frequency Of The Bass Reflex Box
- Fc: Resonance Frequency Of The Closed Box
- Fs: Resonant Frequency
- L: Coil Length
- Lces: Electrical Inductance Including Air-Load
- Le: Voice Coil Inductance
- Ms: Total Mass Of Moving Parts
- Mmd: Diaphragm Mass
- Mms: Diaphragm Mass Including Air-Load
- η₀: Reference Efficiency
- Pa: Acoustic Power
- Pe: Thermal Power Handling
- Qa: Q @ Fb Due To Absorption Losses
- Qec: Q @ Fc
- Qes: Electromagnetic Q
- Ql: Q @ Fb Due To Leakage Losses
- Qmc: Q @ Fc Due To Mechanical Losses
- Qms: Mechanical Q
- Qp: Q @ Fb Due To Port Losses
- Qtc: Pneumatic Q
- Qts: Total Q
- Re: DC Resistance
- Ras: Acoustic Losses
- Res: Electrical Losses
- Rms: Mechanical Losses
- Rg: Amplifier Source Resistance
- Taps
- Transformer Insertion Loss
- Transformer Connection
- Matching Backcan
- Cable Lengths
- Bluetooth Specifications
- Battery
- Microphone
- Voice Control
- Smart Specifications
- Wireless Connectivity
- Channel Configuration
- Built From
- List Price
- Certifications
- Safety Agency
- Warranty
- Included Accessories
- Optional/Available Accessories
Model Number
Each speaker has a model number to distinguish it from other speakers from the same manufacturer.
This model number is typically given in the speaker's official name, but it is sometimes restated in the specifications.
There are a few things we can garner from a model number, including (but not limited to):
- Series.
- Size of the driver or largest driver.
- Number of crossover bands.
- Impedance.
- Type of transducer.
- Whether the speaker is passive, powered or active.
- If the speaker is wireless.
Examples
Electro-Voice ZLX-15
- Part of the ZLX series
- Largest driver is a 15″ woofer
Electro-Voice ZLX-12P
- Part of the ZLX series
- Largest driver is a 12″ woofer
- P means it's powered
QSC KW153
- Part of the KW series
- Largest driver is 15″
- Has a 3-way crossover
Dayton Audio AMT Mini-8
- Air motion transformer (AMT) transducer type
- Tweeter (mini)
- 8-ohm nominal impedance
Back to the Full List Of Speaker Specifications.
Features
The features section in speaker specifications sheets gives the manufacturer an opportunity to disclose the information they deem most important about the product.
It often includes critical or otherwise noteworthy specifications and qualitative characteristics about the speaker.
It also provides a copywriting chance for the marketing team to sell the product better.
Examples
QSC KW153
- Birch plywood enclosure
- Steel grille
- Front LED
- Cast aluminum handles (2)
- 1000 W Class D power module
- M10 rigging points (11)
- 35 mm pole socket
- Slip-resistant feet
B&C 8CX21
400 W continuous program power capacity
100° nominal coverage
75 – 20000 Hz response
94 dB sensitivity
34.5 mm (1.35”) HF unit exit diameter
XO-1 dedicated crossover network
JBL Charge 4
Wireless Bluetooth Streaming
20 hours of playtime
IPX7 waterproof
JBL Connect+
Durable fabric and rugged material
JBL Bass Radiator
Back to the Full List Of Speaker Specifications.
Configuration/Type
The configuration (often called “type”) of the speaker will answer the following questions:
- Is the speaker active or passive?
- How many crossover bands are there? In other words, is the speaker a 1-way, 2-way, 3-way or more?
Let's define these factors quickly:
An active speaker will require external power to function properly due to its built-in amplifier(s). These amplifiers are put after the active crossover in true active speakers and before a passive crossover in powered speakers.
A passive speaker does not have an internal amplifier and requires an external amplifier in order to be driven properly. Several specifications apply especially to passive speakers because of this fact. They include:
- Impedance
- Sensitivity
- Efficiency
To learn more about active and passive speakers, check out my article What Are The Differences Between Passive & Active Speakers?
A crossover is a network of filters that effectively splits the input audio signal into separate bands to drive the individual drivers more accurately and safely. The number of “ways” (2-way, 3-way, etc.) refers to the number of distinct bands. Passive crossovers come after the power amplifier, while active crossovers come before the power amplifiers.
For more information on speaker crossovers, check out my detailed article What Is A Speaker Crossover Network? (Active & Passive).
Oftentimes if the speaker only has a single driver (a subwoofer, for example), this specification will only tell us if the speaker is active or passive. In this case, the spec may be simply stated as “active or passive.”
This specification is often obvious and sometimes omitted due to its inclusion in the speaker's name and/or description.
Examples
QCS KW153
Configuration: 15″ 3-way trapezoidal loudspeaker
Yamaha HS5
Speaker type: 2-way bi-amp powered studio monitor
Magnepan 1.7i
Description: 3-Way, Full-Range, Quasi-Ribbon
Back to the Full List Of Speaker Specifications.
Frequency Response
The frequency response of a speaker is defined as the frequency range versus amplitude. In other words, it is the range of frequencies a speaker will produce within a certain tolerance (+/–) above or below the nominal amplitude.
Some manufacturers list the tolerance while others don't. Typically, the tolerance is +/–3 dB but may be stated otherwise.
If the tolerance is +/– 3 dB, the frequency response limits (both low and high) are at the point where the response passes below –3 dB compared to nominal.
Frequency response is nearly always stated as text but can be somewhat nebulous.
A frequency response graph gives us much more detail about how the frequency-dependent sensitivity of the speaker within the stated frequency response.
The graphs layout the frequencies along the X-axis in Hertz and response (sensitivity) along the Y-axis in decibels. Sometimes impedance is also included in these graphs.
Examples
Electro-Voice ZLX-15
Frequency Response: 56 Hz – 18 kHz
Neumann KH 120 D
- -3 dB free-field frequency response: 52 Hz to 21 kHz, ±3 dB
- Passband free-field frequency response: 54 Hz to 20 kHz, ±2 dB
Yamaha HS5
- Overall Frequency Response:
- –3 dB: 74 Hz – 24 kHz
Back to the Full List Of Speaker Specifications.
Frequency Range
The frequency range of a speaker is the span of frequencies the speaker is capable of producing. It is written as a range from low to high.
However, just because a speaker is capable of producing a given frequency doesn't mean the amplitude of that frequency will be heard when the speaker is tasked with playing a full-range audio signal.
It's always the case that the frequency range extends further than the frequency response for this reason. There are typically sharp sensitivity roll-offs at the low and high ends.
Therefore, at these extremes, the speaker may still be able to reproduce the frequencies, but it does so relatively poorly.
Many manufacturers define their frequency ranges at the –10 dB points (remember that frequency response is generally defined at the –3 dB points).
Therefore, the range should always be wider than the response. Let's look at the same example speakers as we did for frequency response:
Examples
Electro-Voice ZLX-15
Frequency Range: 44 Hz – 20 kHz
Neumann KH 120 D
Neumann gives two frequency response ratings but no frequency range.
Yamaha HS5
- Overall Frequency Response:
- –10 dB: 54Hz – 30kHz
Back to the Full List Of Speaker Specifications.
Usable Frequency Range
The usable frequency range applies to individual drivers and represents the range in which the manufacturer believes the driver will be useful.
There are various measurement techniques to find the usable frequency range.
The truth is that a single moving-coil speaker driver is really bad at producing all the audible frequencies. This is why most speakers have multiple drivers in 2-way, 3-way or other configurations.
Each driver, by nature, will perform at its best when tasked with producing a certain range of frequencies. This is what the usable frequency range specification aims to tell us.
Examples
Dayton Audio AMT Mini-8
Usable Frequency Range (Hz): 3,500 – 40,000 Hz
Note that the AMT Mini-8 is a tweeter.
Eminence Delta-10A
Usable Frequency Range: 63 Hz – 3.7 kHz
Note that the Delta-10A is a mid-range driver.
Dayton Audio RS225-8
Frequency Response: 28 – 2,400 Hz
Note that the RS225-8 is a woofer and that the specification is given simply as “frequency response” rather than “usable frequency range”.
Back to the Full List Of Speaker Specifications.
Sensitivity
The speaker sensitivity rating tells us how loud the speaker will be at a certain amount of amplifier power (or voltage).
This specification applies only to passive speakers, which rely on external amplifiers to drive them. Sensitivity, along with power handling and impedance specs, help us to match passive speakers to amplifiers with greater success.
Sensitivity ratings are generally measured as the sound pressure level (in dB SPL) at one-meter on-axis from the speaker when 1 watt of power is supplied to the speaker from the amplifier.
Oftentimes a manufacturer will simply state their speaker's sensitivity rating as a dB value.
It's important to note that the audio used to measure sensitivity is typically a test tone of a single frequency. As we discussed previously in the frequency response specification, a speaker will have different sensitivity ratings at different frequencies.
Therefore, the manufacturer may use any of the following to measure the sensitivity specification:
- Standard test tone of 1 kHz.
- Another test tone frequency (perhaps at the point where the speaker is most sensitive)
- Multiple test tones at varying frequencies (and then averaging the SPL).
- A swept sine-wave between two frequencies.
Component speakers (which have multiple drivers with different axes) are measured as a whole with the SPL meter/microphone pointed in front of and toward the centre of the high-frequency driver.
Coaxial speakers (which have multiple drivers that share the same axis) are often measured as a whole or have their drivers measured independently.
Some manufacturers give sensitivity ratings at 2.83 volts RMS rather than at 1 watt.
This measurement came about with 8-ohm speakers. 1 watt of power sent to an 8-ohm speaker (assuming a constant impedance which is never the case) has a potential difference of 2.83 volts RMS.
We'll discuss speaker impedance shortly.
To learn more about speaker sensitivity, check out my article The Full Guide To Loudspeaker Sensitivity & Efficiency Ratings.
Examples
Electro-Voice ZLX-15
Axial Sensitivity: 96 dB
Note that the ZLX-15 is a 2-way passive component speaker.
Magnepan 1.7i
Sensitivity: 86 dB 2.83V/1m @ 500 Hz
B&C 8CX21
Specifications LF Unit:
- LF Sensitivity: 94.0 dB
Specifications HF Unit:
- Sensitivity: 101.0 dB
Note that the B&C 8CX21 is a 2-way passive coaxial speaker.
Dayton Audio AMT Mini-8
Sensitivity: 88 dB @ 1W/1m
Back to the Full List Of Speaker Specifications.
Power Handling
The power handling specification refers to the maximum amount of power a speaker can handle before it will begin to burn out and get damaged. It is measured in watts.
Like sensitivity, power handling specifications are really only practical with passive speakers. Power handling specifications help us match passive speakers with amplifiers that will output appropriate levels of electric power.
Some powered speakers have specifications the read like “power ratings”. These specs refer to the amplifier power output of the speaker's built-in amplifier.
Speaker drivers are notoriously inefficient, and a lot of the power supplied to them by the amplifier is lost as heat. If too much power is sent to the speaker, it will not be capable of dissipating the heat and the voice coil with burn and/or melt, rendering the speaker useless.
Power handling is a fairly easy specification to understand on the surface: do not exceed the maximum power handling of the speaker, and the speaker will not be overloaded to the point of burn-out.
However, the way manufacturers test and publish power handling ratings makes this specification rather difficult to comprehend in practice.
There are numerous ways in which the power handling spec of a speaker is given. Though all are measured in watts, the “type” of watts varies. Rating values include:
Of all these specs, the peak value should never be surpassed.
However, with the other values, we can run more power to the speaker (at louder parts of a movie or music, for example) and still be safe so long as we're not consistently over these points. Basically, the speaker coil can handle this much power without burning out for a while, but eventually, it will not be able to dissipate the heat enough to keep it from getting damaged.
What do these all mean? Unfortunately, there is a lot of confusion. Different manufacturers use different terminology, and some even have different definitions for the same terms.
It's always best to find out how the manufacturer comes up with its speakers' power handling specifications to know exactly what you're reading when it comes to power handling.
That being said, let's try to make sense of it all.
Peak Power Handling
Peak power handling refers to the maximum power the speaker can handle for an instant in time. If the amplifier supplies more than the peak power rating at any point, the speaker will sustain damage.
Peak power is often the preferred method for marketers as it gives the highest wattage rating.
Back to the main power handling explanation.
RMS Power Handling
RMS (root mean square) is technically a measurement of the square root of the mean square (the arithmetic mean of the squares of a set of numbers).
RMS is used because the average level of a test tone sine wave is actually zero (the sine wave oscillates between positive and negative values/peak). By squaring the sum of all instantaneous values of the sine wave, we can find the “average overall” strength.
The RMS value of a pure sine wave ends being √2/2 or 0.7071 times the peak.
Voltage and current can truly have RMS values. However, power, which is the product of voltage and current, cannot truly have an RMS value. RMS power is an erroneous term.
Unfortunately, RMS power handling has come to mean the amount of continuous power the speaker can handle. This is technically incorrect, but I digress.
Back to the main power handling explanation.
Average Power Handling
The average power would technically be equal to the RMS current times the RMS voltage. Alternatively, it is equal to the RMS voltage squared divided by the speaker's resistance (or impedance at the given frequency).
Pavg = Irms • Vrms
Pavg = Vrms2 / R
However, power handling is rarely, if ever, given as “average.”
Back to the main power handling explanation.
Continuous Power Handling
Continuous power handling (often called, inaccurately, “RMS power”) is the wattage that a speaker can comfortably handle for an extended period of time.
This can be tested by running pink noise through the speakers for hours on end at varying levels to find the point at which they burn out. There are, as we'd expect, many other ways that manufacturers test this spec.
That being said, the continuous wattage rating will often end up being 25-50% of the peak power handling.
Continuous power handling specifications are the most useful because they give us a sense of the average power we can safely supply to the speaker for extended periods of time.
Back to the main power handling explanation.
Program Power Handling
The music/program rating is nearly always twice the continuous rating. It is a higher rating because music has many peaks and dips and is not as abusive as a continuous signal.
This rating is commonly defended as being a good rating to base our amplifier selection on.
Back to the main power handling explanation.
Nominal Power Handling
Unfortunately, there is great confusion about nominal power handling as well.
In some cases, it simply means the same thing as continuous power handling. In others, it's defined as half the continuous rating.
Even more, definitions can be found, including the following:
This is the maximum power handling of the speaker calculated at its nominal impedance.
It is the max theoretical electric power that would be transferred from amplifier to speaker if the loudspeaker was actually exhibiting its nominal impedance. The actual electric power may vary from about twice the nominal power down to less than one-tenth.
All this is to say, once again, that it's best to determine how the manufacturer tests for power handling to understand the specification properly. It's unfortunate, but power handling is actually a poor specification to use when comparing speakers and/or matching an amplifier to a speaker.
Back to the main power handling explanation.
Examples
Electro-Voice ZLX-15
Power Handling:
- 250 Watts Continuous
- 1000 Watts Peak
Electro-Voice ZLX-12P
Power Rating: 1000 Watts
Note that the ZLX-15P is powered and has a built-in amplifier to supply power to its drivers.
Dayton Audio AMT Mini-8
- RMS Power Handling: 15 watts
- Peak Power Handling: 30 watts
B&C 8CX21
Specifications LF Unit:
- LF Nominal Power Handling: 200 W
- LF Continuous Power Handling: 400 W
Specifications HF Unit:
- Nominal Power Handling: 25 W
- Continuous Power Handling: 50 W
• 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.
• Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
Eminence Delta-10A
Power Rating:
- Watts: 350 W
- Music Program: 700 W
Multiple units exceed published ratings evaluated under the EIA 426A specification while tested in a free-air, non-temperature-controlled environment.
Back to the Full List Of Speaker Specifications.
Maximum SPL
The maximum SPL specification of a speaker refers to the maximum sound pressure level (typically at a distance of 1 metre from the speaker) the speaker is capable of producing before burn-out.
That being said, some manufacturers will give ratings at different distances and even include long-term maximum SPL ratings that are analogous to the continuous power handling ratings.
Maximum SPL ratings are sometimes measured but are often calculated theoretically.
To calculate max. SPL in a passive speaker, we must know the sensitivity and power handling ratings. We must also know that every 3 dB increase in SPL requires a doubling of power.
We can calculate the maximum SPL with this knowledge by taking the maximum power the speaker can handle and solve for the dB SPL value at 1 metre. In this way, we can find a peak, RMS, continuous, etc., max SPL.
The maximum SPL of an active speaker also has to do with the capabilities of the drivers. However, in active speakers, the amplifier should be designed to drive the drivers safely. So the max SPL should be relative to the maximum amplifier power output rating of the active speaker.
The measurement, therefore, is often done (directly or indirectly) with a test tone, several test tones, sweeping test tones, or other methods. Different distances may also be used in some spec sheets. In the case of multi-speaker setups, the max SPL will be different depending on the number of speakers engaged (particularly the subwoofer).
Note that as we move further (or closer) from/to the speaker relative to the 1-metre measurement point, the “max SPL” will vary. In fact, for every doubling of distance, we lose 6 dB of SPL.
Examples
Electro-Voice ZLX-15
Maximum SPL: 126 dB
QSC KW153
Maximum SPL (1 meter): 134 dB peak
Neumann KH 120 D
- Max. SPL in full space / calc. in half-space at 3 % THD at 1 m, averaged between 100 Hz and 6 kHz: 105.1 dB SPL / 111.1 dB SPL
- Bass capability (Max. SPL in half-space with 3 % THD at 1 m, averaged between 50 Hz and 100 Hz): 104.8 dB SPL
- Max. short term SPL with IEC-weighted noise (IEC 60268-5) at 1 m, in typical listening conditions: 107 dB(C) SPL
- Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair):
- 97 dB(C) SPL (full range)
- 104 dB(C) SPL (with subwoofer)
- Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single/pair):
- 88/93 dB(C) SPL (full range)
- 89/94 dB(C) SPL (with subwoofer)
Klipsch Reference R-100SW
Maximum Acoustic Output: 112 dB
Back to the Full List Of Speaker Specifications.
Amplifier Power Output
The amplifier power output specification only applies to powered and active speakers since they have built-in amplifiers.
So just like the power amplifiers that connect to passive speakers have rated output power, so do the amps in powered and active speakers.
Note that there is a difference between powered and active speakers:
Powered speakers have a built-in amp in-line before a passive crossover designed to split up a speaker level signal before sending the bands to their proper drivers.
Active speakers have active crossovers, which split up line level signals into separate bands before sending each band to its own dedicated amplifier before it drives its intended driver.
Because the built-in amps and the drivers are specifically designed for the speaker, the entire system should be safe. Of course, accidents do happen, and even active/powered speakers can sustain damage from power overload.
Note that, like the power handling specification, the amplifier output power is often defined as peak (dynamic), RMS, continuous, etc.
Examples
Electro-Voice ZLX-12P
Power Rating: 1000 Watts
Note that the ZLX-12P is powered, not active, and this “1000 Watts” is peak.
QSC KW153
Amplifiers Power Output: 1000 W Class D (500 W LF, 500 W MF/HF) continuous
Note that the QSC KW153 is active, not powered.
Neumann KH 120 D
- Woofer amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
- Tweeter amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
Note that the Neumann KH 120 D is active, not powered.
Yamaha HS5
- Output power:
- Total: 70W (dynamic power)
- LF: 45W (4 ohms)
- HF: 25W (8 ohms)
Note that the Yamaha HS5 is active, not powered. “Dynamic power” is the same as “peak power”.
HEDD Audio Type20
Amplification (ICEpower®): 3 x 300W
Back to the Full List Of Speaker Specifications.
Drivers/Transducers
Sometimes the drivers are labelled as a single specification, while other times, each driver has its own specifications.
This specification will nearly also define the following:
- The number of drivers used in the speaker.
- The types of those drivers (subwoofer, woofer, mid-range speaker, tweeter, etc.).
- The sizes (diameter) of the drivers.
- Main speaker vs. satellite speakers in multi-speaker setups.
We may garner additional information from the specification depending on the manufacturer's willingness to disclose the information:
- The model name of the drivers.
- The material of the drivers.
- Other details the manufacturer find important for the consumer.
If it's a single driver, this spec (if included) will tell us the intended type of driver it is (subwoofer, woofer, mid-range speaker, tweeter, etc.).
Examples
MartinLogan Classic ESL 9
- High/Mid Frequency Driver: 44” x 9.2” (112 x 23.4 cm) CLS XStat electrostatic (405 in2/2,621 cm2)
- Woofers: 2x 8” (20.3 cm) cast basket, high excursion, rigid aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format.
QSC KW153
- Low-frequency: 15″ cone transducer
- Mid-frequency: 6.5″ mid-range cone transducer
- High-frequency: 1.75″ diaphragm compression driver
B&C 8CX21
Specifications LF Unit:
- LF Sensitivity: 94.0 dB
- LF Nominal Power Handling: 200 W
- LF Continuous Power Handling: 400 W
- LF Voice Coil Diameter: 52mm (2.0 in)
- LF Winding Material: Copper
- LF Flux Density: 1.1 T
- Former Material: Kapton
- Winding Depth: 16.0mm (0.63 in)
- Magnetic Gap Depth: 8.0mm (0.31 in)
Specifications HF Unit:
- Sensitivity: 101.0 dB
- Nominal Power Handling: 25 W
- Continuous Power Handling: 50 W
- Voice Coil Diameter: 36mm (1.4 in)
- Winding Material: Aluminum
- Flux Density: 1.45 T
- Diaphragm Material: Polyester
- Recommended Crossover: 2.2 kHz
- Inductance: 0.14 mH
HEDD Audio Type20
Drivers:
- Woofer: 7” (182mm) Ultra Honeycomb Composite
- Voice coil Ø: 2” (50mm)
- Midrange: 1 x 4“ (120mm) Ultra Honeycomb Composite
- Voice coil Ø: 1.25“ (32mm)
- Tweeter: 1x HEDD AMT (HEDD Air Motion Transformer)
- Equiv. Diaphragm Ø: 2.2” (56mm)
Back to the Full List Of Speaker Specifications.
Impedance
In the simplest sense, impedance is the effective resistance of an electric circuit or component to alternating current arising from the combined effects of ohmic resistance and reactance. It is measured in ohms (Ω).
Real-world speaker impedance is a very complex measurement.
- It varies with frequency.
- Each driver has its own frequency-dependent impedance values.
- Crossovers affect the impedance of the system.
- The impedance of the speaker (load) has a significant affect on the amplifier (source) and vice versa.
So then, what does a speaker impedance specification tell us?
The impedance rating of a speaker is typically an approximation of the nominal impedance rating, rounded to the nearest of the following values:
- 4-ohms (most common in car audio speaker)
- 6-ohms
- 8-ohms (most common overall)
- 16-ohms
Nominal values are loosely defined in the following manner: The speaker's impedance shall not fall below 80% of the nominal impedance at any point within the speaker's frequency range.
I use the term “loosely” here because, though it's something to strive for, the strictness of fitting a speaker into the 4, 6, 8, 12 or 16-Ω standards and satisfying the 80% rule can be a bit tricky. Manufacturers, therefore, bend the rules a bit.
Sometimes a minimum impedance is also stated along with the elusive nominal value.
Some manufacturers offer an impedance graph, which helps us tremendously in finding the actual frequency-dependent impedance of the speaker.
Impedance values are most important for passive speakers that require external amplifiers to function.
The speaker's impedance acts as the load, and the amplifier is the source.
Basically, all else being equal, a speaker with a lower impedance requires more current draw from the amplifier and, therefore, more power from the amplifier.
If an amplifier is incapable of providing the required current, it may clip, and the speaker and/or amplifier may burn out (or shut off protective circuits are put in place).
Note that the real output impedance of a power amplifier is usually less than 0.1 Ω, but this is rarely specified. Rather, power amps are typically defined by a “rated output impedance” that states the nominal speaker impedance range (or single value) that the amp is capable of driving safely.
In most audio cases, we're concerned with impedance bridging (aka voltage bridging) rather than impedance matching.
Matching impedances yield optimal power transfer. We're concerned with optimal voltage transfer, which requires bridging (the load/speaker input impedance being magnitudes higher than the source/amplifier output impedance).
Of course, most amps can drive 4-ohms perfectly fine so long as they're not turned up too loud. This amp spec is to protect manufacturers since people tend to like cranking their amps up.
That all being said, active/powered speakers will sometimes have impedance specifications as well. You'll notice that these impedances are very high (in the 1000's of ohms or kilohms).
This is because active/powered speakers have line level inputs rather than speaker level inputs. They, therefore, have different source impedances that drive them and provide different load impedances.
Examples
Electro-Voice ZLX-15
- Nominal Impedance: 8 Ω
- Minimum Impedance: 7 Ω
QCS KW153
Input Impedance (Ω):
- Channel A XLR /¼”:
- Mic gain setting:
- 0 dB: 38 kΩ (Balanced) 19 kΩ (Unbalanced)
- +12 dB: 10 kΩ (Balanced) 5 kΩ (Unbalanced)
- +24 dB: 2.66 kΩ (Balanced) 1.33 kΩ (Unbalanced)
- +36 dB: 660 Ω (Balanced) 330 Ω (Unbalanced)
- Mic gain setting:
- Channel B XLR /¼”: 38 kΩ balanced / 19 kΩ unbalanced
- Channel B RCA: 10 kΩ
Note that the QCS is an active speaker. It does not have an impedance graph.
B&C 8CX21
- Nominal Impedance: 8 Ω
- Minimum Impedance LF: 6.1 Ω
- Minimum Impedance HF: 7.2 Ω
MartinLogan Classic ESL 9
Impedance: Nominal: 4 ohms, 0.8 ohms @ 20 kHz
The MartinLogan Classic ESL 9 does not have an impedance graph.
Orange PPC112C
Impedance: 16-Ohm
The Orange PPC112C does not have an impedance graph.
Back to the Full List Of Speaker Specifications.
Components
Components often refer to the drivers of the speakers.
Other times, it lists other standout design components that make the speaker perform the way it does. These components are often found in the features section of the speaker specifications sheet though sometimes they are reserves for (and sometimes they are repeated) in the “components” section of the specifications.
Examples
Yamaha HS5
Components:
- LF: 5″ cone
- HF: 1″ dome
In this case, the components simply state the drivers of the HS5.
MartinLogan Classic ESL 9
Components:
- Custom-wound audio transformer
- Air-core coils
- Low DCR steel laminate coils
- Polyester capacitors
In this case, the list of high-end components is paramount in the superb functionality of the ESL 9.
Back to the Full List Of Speaker Specifications.
Crossover Frequency
As the name suggests, the crossover frequency specification tells us the frequency (or frequencies) at which the speaker's crossover splits the audio signal into separate bands.
Frequencies in the top band are generally sent to the tweeter, while the low band is typically sent to the woofer. In 3-way systems, the mid-range is sent to a mid-range driver.
Examples
Electro-Voice ZLX-15
Crossover Frequency: 1.7 kHz
Neumann KH 120 D
Crossover frequency; crossover slope: 2.0 kHz; 24 dB/oct., 4th order
MartinLogan Classic ESL 9
Crossover Frequency: 380 Hz
HEDD Audio Type20
Crossover frequency: 250Hz / 2.5kHz
Back to the Full List Of Speaker Specifications.
Crossover
Some manufacturers (like B&C) give plenty of details about the crossover used in their multi-driver speakers.
These specs are similar to those we'd find about speakers themselves and include:
- Model number
- Filter Type
- Impedance
- Low-Pass Slope
- High-Pass Slope
- Crossover Frequency
- Dimensions
- Weight
Example
B&C 8CX21
Crossover:
- Model: XO-1
- Filter Type: Two-way
- Nominal Impedance: 8.0 Ω
- Low-pass Slope: 12.0 dB/oct
- High-pass Slope: 12.0 dB/oct
- Overall Dimensions: 107×96 mm (4.2×3.8 in)
- Weight: 0.4 kg (0.9 lb)
Back to the Full List Of Speaker Specifications.
Recommended Crossover
When dealing with individual speaker drivers, the manufacturer will sometimes include a recommended crossover frequency.
If the speaker is a tweeter and has a recommended crossover, it would be near the low-end of its frequency response.
If the speaker is a woofer and has a recommended crossover point, it would be near the top-end of its frequency response.
Mid-range drivers may have two recommended crossover frequency points.
Individual coaxial speakers sometimes come without a crossover network, and so the manufacturer will recommend a point at which the user should ideally put a crossover point.
Example
B&C 8CX21
Recommended Crossover: 2.2 kHz
Back to the Full List Of Speaker Specifications.
Recommended HP Frequency
The vast majority of speaker drivers and even full-range speaker units are not designed to produce the audible frequency range's lowest (sub-bass) frequencies. This is why subwoofers are used.
However, some speakers do not have built-in high-pass filters in their crossovers to block low-frequency information from reaching their drivers.
Note that, when this is the case, it's typically only the woofer that will experience the low-end frequencies of the audio signal since the crossover filters higher bands for the tweeter and mid-range drivers.
Including a recommended high-pass frequency will improve the sound and efficiency of the speaker by not sending frequencies the speaker is naturally incapable (or otherwise bad) at recreating.
It's especially important to high-pass main speakers when using a subwoofer to avoid muddying up the low-end.
Example
Electro-Voice ZLX-15
Recommended HP Frequency: 40 Hz
Note that the ZLX-15 has a frequency response from 56 Hz – 18 kHz and a frequency range from 44 Hz – 20 kHz.
Back to the Full List Of Speaker Specifications.
Coverage/Dispersion
The coverage/dispersion specification refers to the directionality of the speaker's sound output.
It's important to note that sound is naturally more directional at higher frequencies (and more omnidirectional at lower frequencies). For this reason, subwoofers, which are intended to produce sub-bass and bass frequencies, do not have coverage/dispersion specifications.
The coverage can be imagined as a 3-dimensional conical-shaped sound front emanating from the speaker. The limits of the coverage are often defined as a -6 dB drop from the on-axis (directly in front of the speaker) SPL.
Of course, lower frequencies are less directional than higher frequencies, so this specification is quite difficult to define across the entire audible spectrum. This specification, therefore, will likely be based on a single-frequency test tone.
The coverage spec is often given as an angle along the horizontal plane that cuts through the on-axis line of the speaker and another angle along the vertical plane that cuts through the on-axis line.
Alternatively, we could have a conical or axisymmetric dispersion that has the same horizontal and vertical angles about the on-axis line.
With non-dynamic speaker drivers that move in a bipolar fashion (like electrostatic and planar magnetic speakers), the dispersion is often described as a line source.
Examples
Electro-Voice ZLX-12P
Coverage (Horizontal x Vertical): 90° x 60°
QSC KW153
Nominal Coverage (-6 dB): 75° axisymmetric
MartinLogan Classic ESL 9
Dispersion:
- Horizontal: 30 Degrees
- Vertical: 44” (112 cm) line source
Back to the Full List Of Speaker Specifications.
Connectors
The connectors (inputs and outputs) or a speaker are generally all listed in the speaker's specifications sheet.
There are plenty of audio connection types out there and a wide variety of speakers that may or may not use any number of these connections.
All wired speakers (as opposed to wireless) would require at least one input.
Passive speakers generally have input connections that are standard with carrying speaker level signals. Many passive speakers will come with a “through” output that allows users to chain multiple speakers together (in parallel or series).
Active and powered speakers generally have input connectors that are standard with line level (and mic level) signals. They also have power inputs and often have outputs.
Without getting into the details of any specific connector types, let's look at the examples:
Examples
Electro-Voice ZLX-15
Connectors: Dual NL4
Electro-Voice ZLX-12P
Connectors:
- (2) XLR/TRS Combo Jack
- (1) 3.5 mm Input
- (1) XLR link Output
QSC KW153
Connectors:
- Balanced female XLR /¼” line/mic level input
- Balanced female XLR /¼” line level input
- Dual Balanced male XLR full range line level out
- Balanced male XLR “mix” out
- Stereo RCA line level input
- Remote gain control
- Locking IEC power connector
Denon Professional Commander Sport
Connectors:
- (1) XLR/1/4″ TRS combo jack
- (1) 1/4″ (6.35mm) output
- (1) 1/8″ (3.5mm) input
- (2) USB ports
- (1) IEC AC power input
Neumann KH 120 D
Analog input:
- Input type: XLR, electronically balanced
Digital input/output:
- Signal format BNC: AES3, S/P-DIF
Cyber Acoustics CA-3602
- Plug Type: Chrome, 3.5 mm plug
- Headphone Output: Yes
- Aux Input: Yes
Back to the Full List Of Speaker Specifications.
Common-Mode Rejection Ratio
Common-mode rejection ratio is an uncommon speaker specification that only applies to active/powered speakers with balanced inputs.
Balanced audio, briefly, carries the same audio signal in opposite polarity on two audio wires relative to one ground wire in a balanced cable.
At the balanced input (generally an XLR), a differential amplifier sums the differences between the two audio wires. It cancels any noise (particularly electromagnetic interference) that was picked up by and common to both audio wires.
The CMR ratio is the ratio between the differential gain and common mode gain measured in dB, ideally across a given frequency range.
Example
Neumann KH 120 D
CMRR:
- > 56 dB, 100 Hz to 10 kHz (ANALOG mode)
- > 56 dB, 100 Hz to 12 kHz (ANALOG DELAYED mode)
Back to the Full List Of Speaker Specifications.
Maximum Input Level
The maximum input level is another rare specification that is reserved for active and powered speakers that have internal amps and accept line level signals.
Passive speakers deal with power handling rather than signal voltage levels.
The maximum input level specification refers to the maximum signal level at a speaker input before a certain level of signal distortion happens.
This is generally measured with a single-frequency test tone (1 kHz, for example) and a threshold defined by a specific amount of total harmonic distortion (1%, for example).
It is typically measured in dBu to keep in line with the professional line level standard (nominally +4 dBu).
Example
Neumann KH 120 D
Maximum input level:
- 24 dBu (ANALOG mode)
- 18 dBu (ANALOG DELAYED mode)
HEDD Audio Type20
Maximum input level (balanced / unbalanced): 6Vrms (+17.8dBu, +17.6dBV) / 4.5Vrms (+15.3dBu, +13.0dBV)
Back to the Full List Of Speaker Specifications.
Recommended Amplifier Power
Some high-end speaker manufacturers include a specification for recommended amplifier power. This is the optimal power to drive the speaker.
This is typically noted as a range of watts an amplifier should be capable of producing.
Some even include the optimal rated load impedance of the amp into the specification, though this information could be found by looking at the speaker's nominal impedance.
Example
MartinLogan Classic ESL 9
Recommended Amplifier Power: 50–400 watts per channel at 4 Ohms
Back to the Full List Of Speaker Specifications.
Infrasonic Filter Frequency/Slope
In contrast to the recommended high-pass frequency specification, some speakers (particularly monitors) have built-in HP filters to remove low-end and infrasonic frequencies from their circuitries.
Practically speaking, these filters are put in place to help protect the speaker units from surges in the low end that could potentially cause electrical or mechanical damage. They are not so much included to reduce low-end noise from the speaker's output (though they do that, too).
Example
Neumann KH 120 D
Infrasonic filter frequency; slope: 30 Hz; 6 dB/oct.
Note that the low points of the KH 120 D's frequency response/range are well above this 30 Hz. I'll restate them here:
- -3 dB free-field frequency response: 52 Hz to 21 kHz, ±3 dB
- Passband free-field frequency response: 54 Hz to 20 kHz, ±2 dB
Back to the Full List Of Speaker Specifications.
Self-Generated Noise
Self-generated noise refers to the noise produced by the internal amplifiers and other electronics of the speaker.
The specification is generally listed in dB SPL (A-weighted, which is based on our actual hearing perception) at a certain distance from the speaker. It is also measured at a specific amount of gain supplied by the speaker.
Example
Neumann KH 120 D
Self-generated noise (with input gain set to 100 dB for 0 dBu): <20 dB(A) at 10 cm
Back to the Full List Of Speaker Specifications.
Signal-To-Noise Ratio
The signal-to-noise ratio is another specification that refers to the noise generated by the circuits of speakers.
Active/powered speakers are more likely to have SNR specifications since amplifiers and active circuits generate relatively high noise levels (due to gain).
Passive speakers also output noise, though this noise is often in the output signal of the connected amplifier and is not generated within the speaker. Therefore, the spec is rarely, if ever, found in passive speakers.
SNR tells us how much “noise” there is in the output of a speaker in relation to the signal level. It is expressed in decibels (dB).
Higher signal-to-noise ratios are better for cleaner audio signals and speaker sound.
Example
JBL Charge 4
Signal-to-noise ratio: >80dB
Back to the Full List Of Speaker Specifications.
Total Harmonic Distortion
Total harmonic distortion is a rather odd specification in the way that it tells us information.
THD is a measurement of the harmonic distortion present in a signal. It is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency.
It is calculated with a simple sine wave (a single frequency) and is stated as a percentage.
The goal of the THD specification is to show the point (of power, voltage, SPL or SPL) at which the speaker will begin to exhibit distortion. This is often described as either 0.5% or 1% THD.
So any THD specification actually tells us the point at which we should be concerned about distortion. It is up to the manufacturer to define a THD percentage at which the distortion will be audible, and it is up to us as users to avoid exceeding this limit if we are to keep the speaker sounding clean.
Examples
Neumann KH 120 D
Total harmonic distortion < 0.5 % at 95 dB SPL at 1 m: >100 Hz
- Max. SPL in full space / calc. in half-space at 3 % THD at 1 m, averaged between 100 Hz and 6 kHz: 105.1 dB SPL / 111.1 dB SPL
- Bass capability (Max. SPL in half-space with 3 % THD at 1 m, averaged between 50 Hz and 100 Hz): 104.8 dB SPL
- Woofer amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
- Tweeter amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
- THD+N:
- analog delayed: < -104 dB
- digital: < -106 dB
Cyber Acoustics CA-3602
- Wattage (Satellites): Each speaker: 6 watts/ch @ 4 ohm @ 10% THD
- Wattage (Subwoofer): 18 watts @ 4 ohm @ 10% THD
HEDD Audio Type20
THD 90dB/1m > 100Hz: ≤0.5 %
Back to the Full List Of Speaker Specifications.
Digital Input/Output
Though there isn't an abundance of digital speakers out there with professional-grade digital I/O, these specs are still worth mentioning.
As the name suggests, these specifications refer to the inputs and outputs of the speaker that deal with digital signal transfer rather than analog signal transfer.
Digital I/O specifications include:
- Signal Format
- Impedance
- Input Switching
- Digital Converter
- Digital Sensitivity
- Dynamic Range
- THD+N
- Maximum Delay (Time / Distance)
- Maximum Delay Audio Video Synchronization
- Minimum Delay Resolution (Time / Distance)
- Latency D-A
- Latency A-D-A
Signal Format
There are plenty of digital signal formats (known as interfaces) available. This specification tells us which standard is being used and the input/output connection used to transfer the signal format.
Digital signal formats/interfaces include (but are not limited to):
- S/PDIF
- AES3
- AES3-id
- AES42
- ADAT
- MADI
- MADI-X
- SuperMAC
- HyperMAC
Examples
Neumann KH 120 D
Signal format BNC: AES3, S/P-DIF
HEDD Audio Type20
Digital/HEDD Bridge Options: AES67 Ravenna, Dante, AES3/EBU
Back to the main explanation of Digital I/O.
Impedance
Yes, even digital connections have some sort of input impedance. This spec refers to just that.
Example
Neumann KH 120 D
Impedance BNC, unbalanced: 75 Ω (input and output)
Back to the main explanation of Digital I/O.
Input Switching
Oftentimes digital speakers will also have multiple digital inputs and even analog inputs.
Input switching allows the user to select the appropriate input for the speaker.
Example
Neumann KH 120 D
Input switching: Analog/Digital A/Digital B/Digital A+B
Back to the main explanation of Digital I/O.
Digital Converter
The digital converter (often called the digital-to-analog converter or DAC) is a critical component of a digital speaker. It converts the digital information into analog audio (AC voltage) signals that can properly drive the speaker's drivers to produce sound.
The digital converter specs often refer to two key factors:
- Sample rate: measured in Hertz, this is the number of times the digital audio is sampled per second.
- Bit-depth: measured in bits, this is the number of potential amplitudes for each sample.
Example
Neumann KH 120 D
- Digital converter: resolution
- 16 … 24-bit
- Digital converter: sampling rates [kHz]*
- 22.05, 24, 32, 44.1, 48, 64, 88.2, 96, 176.4, 192
Back to the main explanation of Digital I/O.
Digital Sensitivity
Analog sensitivity measures the sound pressure level at 1 meter when 1 watt of electrical power is sent to the speaker.
Digital sensitivity measures the sound pressure level at 1 meter when a given dBFS (decibels Full Scale) is sent to the speaker.
Note that 0 dBFS is the absolute limit in digital audio, so all dBFS values will be negative unless the signal is distorting due to digital clipping.
Example
Neumann KH 120 D
Digital sensitivity: -18 dBFS = 100 dB SPL at 1 m
Back to the main explanation of Digital I/O.
Dynamic Range
The DAC and the digital speaker as a whole will have a certain dynamic range. This is the difference between the quietest sound the speaker can produce and the loudest sound the speaker can produce.
So during the digital-to-analog (D-A) conversion, the speaker will have a dynamic range limit.
If the digital speaker has analog inputs, it will likely still run the incoming signal through its digital circuitry. This means the speaker should also have a dynamic range limit for analog-to-digital-to-analog (A-D-A) conversion.
Example
Neumann KH 120 D
Dynamic range: A-D-A, D-A: > 116 dB(A), 123 dB(A)
Back to the main explanation of Digital I/O.
THD+N
This specification refers to the total harmonic distortion plus the noise of the digital circuit.
It is generally measured in negative decibels to refer to how quiet the THD+N is relative to the signal.
Example
Neumann KH 120 D
THD+N:
- analog delayed: < -104 dB
- digital: < -106 dB
Back to the main explanation of Digital I/O.
Maximum Delay (Time / Distance)
However fast audio signals travel (both analog and digital), it still takes time to get them from point A to point B.
Maximum delay time gives us the slowest rate at which the signals will travel through lengths of cable.
Example
Neumann KH 120 D
Maximum delay (time / distance): 409.5 ms / 140.87 m (462′ 2″)
Back to main explanation of Digital I/O.
Maximum Delay Audio-Video Synchronization
When synchronizing video and audio (within a digital audio workstation, for example), any delay can prove unsettling.
The maximum delay audio-video synchronization tells us the max offset due to the speaker itself.
Note that there are other factors to take into account. Most DAWs can be manually offset to fix sync issues.
Example
Neumann KH 120 D
Maximum delay audio-video synchronization (lip-sync):
- 10.2 at 40 ms/frame
- 12.3 at 33 ms/frame
Back to the main explanation of Digital I/O.
Minimum Delay Resolution (Time / Distance)
This refers to the minimum signal delay that is possible from the speaker and cable running to the speaker.
Example
Neumann KH 120 D
Minimum delay resolution (time / distance): 0.1 ms / 3.44 cm (1 3/8″)
Back to main explanation of Digital I/O.
Latency D-A
DACs (and ADCs) and other digital systems produce latency. Latency is essentially the short period of delay (usually measured in milliseconds) between when an audio signal enters a system and when it emerges.
In the case of digital-to-analog conversion, latency refers to the time it takes for the conversion to happen.
Example
Neumann KH 120 D
Latency D-A (with delay = 0 ms) **
- 1.84 ms at 22.05 kHz
- 1.70 ms at 24 kHz
- 1.28 ms at 32 kHz
- 0.93 ms at 44.1 kHz
- 0.86 ms at 48 kHz
- 0.64 ms at 64 kHz
- 0.47 ms at 88.2 kHz
- 0.43 ms at 96 kHz
- 0.24 ms at 176.4 kHz
- 0.22 ms at 192 kHz
Back to the main explanation of Digital I/O.
Latency A-D-A
This specification refers to the time it takes for the speaker to convert an incoming analog signal into a digital signal, process it digitally, and convert it back to an analog signal to drive the drivers.
Example
Neumann KH 120 D
Latency A-D-A (with delay = 0 ms): 0.54 ms
Back to the main explanation of Digital I/O.
Back to the Full List Of Speaker Specifications.
Enclosure Type
If we're dealing with speaker units (as opposed to individual standalone drivers), we'll also be dealing with enclosures.
A speaker enclosure is essentially the box into which the speaker driver is designed.
Though perhaps a seemingly small detail, the enclosure type (and size) plays a major role in determining the speaker's overall sound, sensitivity, directionality, mechanical limitations, mounting, acoustic resonance(s), and even its impedance.
Examples
Klipsch Reference R-100SW
Enclosure Type: Bass-Reflex via rear-firing port
Yamaha HS5
Shape: Bass-reflex type
Orange PPC112C
Features:
- 1″ x 12″ Closed-Back Design
Back to the Full List Of Speaker Specifications.
Box Tuning Frequency
The box tuning frequency describes the frequency at which air naturally resonates through the port of a ported enclosure. Air coming out of the port naturally reinforces the bass or sub-bass that the speaker (often a subwoofer) is playing.
This tuning frequency commonly causes a spike in the speaker's impedance at the frequency and may cause a spike in frequency response unless the speaker is properly damped at that point.
No Examples
Back to the Full List Of Speaker Specifications.
Grille
The grille specification describes the grille(s) of the speaker (if they are part of the design).
A speaker grille provides protection from foreign particles and, to varying degrees, humidity.
This specification will generally describe the following aspects of the grille:
- Grille material
- Gauge of the grille's wire
- Finish/color of the grille
Examples
Electro-Voice ZLX-12P
Grille: 18 Gauge Steel with Black Powder Coat
QSC KW153
Grille: Black powder coated 16 gauge steel
Orange PPC112C
Features:
- Hard Wearing Woven Paper Grille Cloth
Back to the Full List Of Speaker Specifications.
Material
Any given speaker is made of many different materials. Therefore, there are many different material specifications we'll find on a speaker's datasheet:
- Enclosure material
- Magnet material
- Winding material
- Former material
- Diaphragm material
- Surround material
- Basket/frame material
Enclosure Material
The material(s) the speaker enclosure is made of.
Enclosure material plays a role in the overall weight, acoustics and aesthetics of speaker design.
Examples
Electro-Voice ZLX-15
Enclosure: Polypropylene
QSC KW153
Enclosure: 15 mm painted birch plywood
Yamaha HS5
Cabinet material: MDF
Back to the main section on speaker material.
Magnet Material
The material(s) the speaker driver magnet is made of.
Magnet material plays a role in the overall weight, magnetic flux density, sensitivity/efficiency, and resonances of the speaker driver.
Examples
Dayton Audio AMT Mini-8
Features:
- Powerful, lightweight neodymium magnet structure for low
B&C 8CX21
Magnet Material: Ceramic
Eminence Delta-10A
Materials Of Construction:
- Ferrite magnet
Dayton Audio RS225-8
Magnet Material: Ferrite
Back to the main section on speaker material.
Winding Material
The material(s) the speaker driver winding is made of. The winding is the wire that makes up the voice coil.
Winding material affects power handling (due to conductance and thermal properties) and sensitivity.
Examples
B&C 8CX21
Specifications LF Unit:
- LF Winding Material: Copper
Specifications HF Unit:
- Winding Material: Aluminum
Eminence Delta-10A
Materials Of Construction:
- Aluminum voice coil
Dayton Audio RS225-8
Voice Coil Wire Material: Copper
Back to the main section on speaker material.
Former Material
The material(s) the speaker driver former is made of. The former is the tube that the voice coil wraps around.
Former material plays a role in speaker longevity and should be heat resistant so as not to burn up when the voice coil gets hot.
Examples
B&C 8CX21
Specifications LF Unit:
- Former Material: Kapton
Eminence Delta-10A
Materials Of Construction:
- Polyimide former
Dayton Audio RS225-8
Voice Coil Former: Aluminum
Back to the main section on speaker material.
Diaphragm Material
The material(s) the speaker driver diaphragm is made of.
Diaphragm material affects the speaker's overall weight and resonances, frequency and transient response, damping factor, and many other specifications.
Examples
Dayton Audio AMT Mini-8
Features:
- Folded Kapton ribbon diaphragm
B&C 8CX21
Specifications HF Unit:
- Diaphragm Material: Polyester
Dayton Audio RS225-8
Cone/Diaphragm Material: Black Anodized Aluminum Cone
Back to the main section on speaker material.
Surround Material
The material(s) the speaker driver surround is made of. The surround is the part of the speaker suspension that effectively holds the voice coil in place and keeps it moving only in the z-axis (and not in the y and x-axes).
Example
Dayton Audio RS225-8
Surround Material: Rubber
Back to the main section on speaker material.
Basket/Frame Material
The material(s) the speaker driver's basket, frame or housing is made of.
Basket material affects the overall weight, durability and resonances of the speaker driver.
Examples
Dayton Audio RS225-8
- Basket/Frame Material: Cast Aluminum
Eminence Delta-10A
Materials Of Construction:
- Pressed steel basket
Back to the main section on speaker material.
Back to the Full List Of Speaker Specifications.
Dimensions
As we can imagine, with so many parts and design complexities, there are many dimensions to consider when designing (and sharing the design specifications) a speaker.
The dimensions we'll often find defined on a speaker specification sheet are:
- Height, width and depth
- Voice coil diameter
- Winding depth
- Magnetic gap depth
- Cutout diameter
- Internal net volume/external volume
- Nominal diameter
- Overall diameter
- Overall depth
- Top Mounting Depth
- Bottom Mounting Depth
Height, Width & Depth
The height, width and depth (H, W, D) specifications typically apply to speaker units that are complete with enclosures. It refers to the overall outer dimension of a single speaker unit (or of several units if it is a multi-speaker powered system).
Speakers will usually have a preferred position. The drivers are obviously at the front face, and the speakers generally have a “bottom” (though loudspeakers are often sat tilted on their sides and monitors are sometimes repositioned to sit on their sides as well).
So then, the height is the vertical measurement of the overall speaker unit; the width is the horizontal measurement across the front (or back) face, and the depth measures the distance between the front and back.
Examples
Neumann KH 120 D
Dimensions (H x W x D): 277 x 182 x 220 mm (107 /8″ x 71 /8″ x 85 /8″)
Klipsch R-100SW
- Height: 14.5” (368 mm)
- Width: 12.5” (318 mm)
- Depth: 16.4” (417 mm)
Cyber Acoustics CA-3602
- Satellite Dimensions: (H) 8 in. X (W) 3 in. X (D) 3 in.
- Subwoofer Dimensions: (H) 10 in. X (W) 8 in. X (D) 8 in.
Back to the main section on speaker dimensions.
Voice Coil Diameter
This specification refers to the diameter of the outside of the voice coil.
Generally speaking, larger voice coils allow for greater amplifier control over the speaker but increase the cost of manufacturing.
A wider voice coil also typically has a greater surface area which means it reacts better to the magnetic field/flux of the magnet while also being more efficient as dispersing heat. This effectively improves sensitivity and power handling.
Examples
B&C 8CX21
Specifications LF Unit:
- LF Voice Coil Diameter: 52mm (2.0 in)
Specifications HF Unit:
- Voice Coil Diameter: 36mm (1.4 in)
Eminence Delta-10A
Voice Coil Diameter: 2.5″, 64mm
Dayton Audio RS225-8
Voice Coil Diameter: 38 mm
Back to the main section on speaker dimensions.
Winding Depth
The winding depth (voice coil depth) refers to the voice coil's height (rather than the diameter).
Again, a greater winding depth gives greater surface area, which improves sensitivity and power handling (heat dissipation).
To maintain linearity in the speaker, the percentage of the voice coil in the gap must remain constant during movement. This can be achieved with a deep/tall voice coil and a thin/short pole piece or a shallow/short voice coil and a thick/tall pole piece.
Care must be taken so that the coil does not hit against the magnet.
Example
B&C 8CX21
Specifications LF Unit:
- Winding Depth: 16.0mm (0.63 in)
Back to the main section on speaker dimensions.
Magnetic Gap Depth
The magnetic gap depth measures the distance between the front pole plate and the pole piece of the speaker's magnetic structure. It is within this circular gap that the voice coil oscillates.
A shorter magnetic gap depth increases the magnetic flux density of the speaker's magnet around the voice coil and, therefore, improves the sensitivity and efficiency of the speaker.
Note that the gap depth must be large enough to safely allow the coil to move without touching the magnets and pole pieces.
Examples
B&C 8CX21
Specifications LF Unit:
- Magnetic Gap Depth: 8.0mm (0.31 in)
Eminence Delta-10A
Gap Height: 0.375″, 9.5mm
Back to the main section on speaker dimensions.
Cutout Diameter
The cutout diameter of a speaker driver refers to the diameter without the ring/flange (the outer rim that allows for the physical mounting of the driver to an enclosure or surface). A hole the size of the driver's cutout diameter must be made for the driver to sit properly within the enclosure/surface.
This specification is important to know when mounting individual drivers. The cutout in the enclosure should match up with the cutout diameter of the speaker driver for the driver to fit into the enclosure while also allowing it to be safely mounted (screwed in) to the enclosure through its flange/ring (not included in the cutout diameter).
Examples
B&C 8CX21
Baffle Cutout Diameter: 187 mm (7.4 in)
Dayton Audio RS225-8
Baffle Cutout Diameter: 184 mm
JBL CSS8008
Cutout Diameter:
- Open-back: 216 mm (8.5 in)
- In CSS-BB backcan: 295 mm (11.7 in)
Back to the main section on speaker dimensions.
Internal Net Volume/External Volume
The internal net volume and external volume refer to the total volume inside the enclosure and the volume of the exterior of the enclosure, respectively.
External volume is calculated by multiplying the enclosure's height, width, and depth in cubic designs (it is more complicated in more complex shapes).
Internal volume is typically calculated by subtracting the volume of the enclosure material (which comes from knowing the thickness of the enclosure material) from the external volume.
Example
Neumann KH 120 D
Internal net volume/external volume: 6.5 l/9.7 l
If we have a look at the KH 120 D, we can see how the odd shape of the speaker affects the volume. Performing the W x H x D calculation, we find that the actual volume is less than the dimension measurements since the speaker is not a perfect box.
For reference: Dimensions (H x W x D): 277 x 182 x 220 mm (107 /8″ x 71 /8″ x 85 /8″)
Back to the main section on speaker dimensions.
Nominal Diameter
The nominal diameter is a specification that makes it easy to refer to the size of a speaker driver (particularly to the diameter of the diaphragm).
When we state “that's a 10″ speaker” or “that's a 15″ subwoofer” or “that's a 1″ tweeter”, we are referring to the nominal diameter.
The actual diameter of the speaker's diaphragm, where it meets the surround, may not be exactly the nominal diameter. In most cases, it isn't.
The diameter could be a few mm from the nominal value. However, the speaker will generally perform as if its nominal diameter is true.
Perhaps the biggest advantage of using nominal diameters is that we can state the above example statements of “10” speaker”; “15” subwoofer”, or “1” tweeter” rather than “10 1/32” speaker”; 1415/16” subwoofer” or “63/64” tweeter”. This makes life much easier!
Examples
B&C 8CX21
Nominal Diameter: 210mm (8.0 in)
Eminence Delta-10A
Nominal Basket Diameter: 10,0″, 254mm
Dayton Audio RS225-8
Nominal Diameter: 8″
Back to the main section on speaker dimensions.
Overall Diameter
The overall diameter specification applies to individual speaker drivers. It tells us the maximum diameter of the speaker, including its outer flange/ring that provides mounting possibilities.
Examples
Dayton Audio AMT Mini-8
Overall Outside Diameter: 40.5 mm
B&C 8CX21
Mounting & Dimensions:
- Overall Diameter: 225 mm (8.8 in)
Eminence Delta-10A
Overall Diameter: 10.09’’, 256.3 mm
Dayton Audio RS225-8
Overall Outside Diameter: 223 mm
Back to the main section on speaker dimensions.
Overall Depth
The overall depth of a speaker driver is measured from the outermost part of the speaker flange or cone (dust cap) to the rear of the magnet.
Examples
Dayton Audio AMT Mini-8
Overall Depth: 23mm
B&C 8CX21
- Depth: 135 mm (5.3 in)
Eminence Delta-10A
- Depth: 4.25”, 108.0 mm
Back to the main section on speaker dimensions.
Top Mounting Depth
Distance from the back of the magnet to the rear of the flange/ring of a speaker driver.
No examples
Back to the main section on speaker dimensions.
Bottom Mounting Depth
Distance from the back of the magnet to the front of the flange/ring of a speaker driver.
No examples
Back to the main section on speaker dimensions.
Back to the Full List Of Speaker Specifications.
Mounting
Speakers are often mounted into position.
For example, PA speaker units can be mounted on stands; installed speakers can be mounted in walls, ceilings, or elsewhere. Individual speaker drivers are often purchased to be mounted within an enclosure.
So as we can imagine, there are plenty of different specifications that refer to the mounting of a speaker depending on the style of mounting required for that speaker.
Let's get into the types of speaker mounting specifications we'll encounter in data sheets:
- Bolt Circle Diameter
- Baffle Cutout Diameter
- Flange And Gasket Thickness
- Recommended Enclosure Volume
- # Mounting Holes
- Threaded Inserts
- Pole Socket
Bolt Circle Diameter
Most standalone drivers have a circular flange with bolt holes that we drill through to mount the driver to an enclosure or surface.
Because of the circular nature and the need for several drill/connection points, the drill holes around the flange are generally equal distance from the centre of the driver.
These centre points of these drill points can be thought of as being on a concentric circle within the overall diameter of the driver. The bolt circle diameter is the diameter of such an imaginary circle.
In other words, it is the measurement from the centre of one bolt hole to the bolt hole on the other side of the speaker.
Knowing this measurement helps us in purchasing or building an enclosure for the speaker.
Examples
JBL CSS8008
Bolt Mounting Circle to Backcan: 4 points on 286 mm (11.25 in) diameter
B&C 8CX21
Bolt Circle Diameter: 210 mm (8.3 in)
Back to the main section on speaker mounting.
Baffle Cutout Diameter
The baffle cutout diameter is the diameter of the circle we must cut out of the enclosure to fit the speaker driver properly.
Cutting a hole too small will not allow the rear of the driver to fit.
Cutting a hole too big will lead to issues when securing the driver in place (or, in extreme cases, the cutout will be larger than the driver diameter itself, and no mounting would be possible).
Examples
B&C 8CX21
Baffle Cutout Diameter: 187 mm (7.4 in)
Dayton Audio RS225-8
Baffle Cutout Diameter: 184 mm
JBL CSS8008
Cutout Diameter:
- Open-back: 216 mm (8.5 in)
- In CSS-BB backcan: 295 mm (11.7 in)
Back to the main section on speaker mounting.
Flange And Gasket Thickness
This refers to the thickness of the flange and gasket and tells us how far the flange will stick out from the enclosure.
The flange is the outer circle of the driver that allows us to bolt the driver in place in an enclosure.
Example
B&C 8CX21
Flange and Gasket Thickness: 11 mm (0.4 in)
Back to the main section on speaker mounting.
Recommended Enclosure Volume
The recommended enclosure volume (often given as the Thiele-Small parameters Vb and Vc) is the manufacturer-recommended volume of the enclosure for an individual speaker driver.
This volume can be for a ported/vented enclosure (as is the case with Vb) or a closed/sealed enclosure (as is the case with Vc).
Example
Eminence Delta-10A
Recommended Enclosure Volume:
- Sealed: N/A
- Vented: 12.70–37.90 litres, 0.45–1.34 cu.ft.
Back to the main section on speaker mounting.
# Mounting Holes
This refers to the number of bolt/drill holes in the flange.
Example
Dayton Audio RS225-8
# Mounting Holes: 6
Back to the main section on speaker mounting.
Threaded Inserts
Threaded inserts typically refer to the mounting of enclosures. If a permanent or semi-permanent installation is wanted, some speaker units have heavy-duty threaded connectors.
Example
Neumann KH 120 D
Threaded inserts for Neumann mounting hardware: 2 x M8 on the rear panel with depth 15 mm (5 /8″)
Back to the main section on speaker mounting.
Pole Socket
Though rarely found as a line on the specification sheet, the pole socket dimensions are an important piece of information about a speaker unit.
Oftentimes PA speakers will have pole sockets in order to be mounted on a stand. Knowing this information is important and can often be found in CAD drawings of the speaker rather than in the listed specs.
Most PA speaker manufacturers will have compatible speaker stands for their speakers, so it's usually pretty easy to find a match.
No Examples
Back to the main section on speaker mounting.
Back to the Full List Of Speaker Specifications.
Weight
Speakers are physical devices and have inherent weight.
Net Weight
The net weight refers to the weight of the entire speaker, including all of its components.
Examples
Electro-Voice ZLX-15
- Net Weight: 16.6 kg (36.5 lbs)
JBL CSS8008
- Net Weight (ea): 1.27 kg (2.8 lb)
Sonos Move
- Weight: 6.61 lb (3.0 kg) (including the battery)
Magnet Weight
The magnet weight refers to the weight of the magnetic structure (magnet and the pole plates/pieces) of the speaker and is generally only found in individual driver spec sheets.
Example
Eminence Delta-10A
Magnet Weight: 56 oz.
Shipping Weight
The shipping weight refers to the combined weight of the speaker, any accessories, and the shipping container/safety pieces that come with the speaker when ordered from the manufacturer or retailer.
Shipping weight may be a concern for the purchaser when buying a speaker and having it delivered.
Examples
Electro-Voice ZLX-15
- Shipping Weight: 22.0 kg (48.3 lbs)
JBL CSS8008
- Shipping Weight (ea): 1.94 kg (4.3 lb)
Eminence Delta-10A
Shipping Weight: 12.00 lbs, 5.44 kg
Back to the Full List Of Speaker Specifications.
Finish
Aesthetics is a big part of speaker design. The finish refers to the exterior look of the speaker.
Examples
QSC KW153
- Finish: Black textured paint
Neumann KH 120 D
Cabinet surface finish, Color:
- Painted aluminium
- Anthracite (RAL 7021) or
- White (9016) or
- Other RAL color
Klipsch Reference R-100SW
Finishes:
- Black
- Textured Wood Grain
- Vinyl
Back to the Full List Of Speaker Specifications.
Color
Color is another specification to tell us how the speaker will look.
Examples
Neumann KH 120 D
Cabinet surface finish, Color:
- painted aluminium
- Anthracite (RAL 7021) or
- White (9016) or
- other RAL color
Dayton Audio AMT Mini-8
- Color: Black
Dayton Audio RS225-8
- Color: Black
Back to the Full List Of Speaker Specifications.
Controls
Speakers will often have circuits that allow for some amount of control by the user. These switches and potentiometers are defined in the “controls” specification of the speaker's spec sheet.
Common controls include:
- Power
- Gain
- Volume
- EQ
- Bass control
- Mid control
- Treble control
- Filters
- Voice control
Examples
QSC KW153
Controls:
- Power
- Gain A
- Gain B
- Channel A Input Gain (0 dB / 12 dB / 24 dB / 36 dB)
- LF Mode (Ext Sub /Norm/DEEP™)
- HF Mode (Flat/ Vocal Boost) Front LED (On /Off/Limit)
Neumann KH 120 D
- Controller design: analog, active
- ACOUSTICAL CONTROLS switches:
- BASS: 0, -2.5, -5, -7.5 dB
- LOW-MID: 0, -1.5, -3, -4.5 dB
- TREBLE: +1, 0, -1, -2 dB
Input gain control (sensitivity): 0 dB to -15 dB
Yamaha HS5
Others:
- LEVEL control: +4dB/center click
- EQ: HIGH TRIM switch: +/- 2dB at HF
- ROOM CONTROL switch: 0/-2/-4 dB under 500Hz
Sonos Move
Voice Control: Integrated voice control.
HEDD Audio Type20
Input gain: -30dB … +6dB
Back to the Full List Of Speaker Specifications.
Indicators
Speaker indicators are typically lights that either flash/flicker or light up to indicate occurrences and states of performance of the speaker.
Indicators are often LEDs that light up to communicate the following:
- Power
- Standby
- Signal
- Limit
- Mic/Line
- Error
Examples
QSC KW153
Indicators:
- Power
- Signal A
- Signal B
- Standby
- Limit
- Mic (24 dB and 36 dB settings)
Neumann KH 120 D
- DELAY rotary switches E and SIGNAL SELECT rotary switch D setting acknowledgement: Neumann logo “Red” 3 flashes
- Digital error/Loudspeaker’s protection system is active: Neumann logo “Red” 1 flash
Yamaha HS5
- Indicator: Power ON (White LED)
Back to the Full List Of Speaker Specifications.
Cooling
Some speaker manufacturers include cooling systems in their speakers to help in heat dissipation. As discussed earlier, this helps to improve the power handling rating and maximum SPL by allowing greater signal levels to be sent through the voice coil (which causes more heat to be produced).
Example
QSC KW153
- Cooling: On-demand, 50 mm variable speed fan
Back to the Full List Of Speaker Specifications.
Protection
Speaker burn-out is an awful thing to happen to your speakers. Therefore, some manufacturers take it upon themselves to include protective components within their speakers.
These components can be electrical or mechanical in nature, and all serve to protect the speaker from burn-out due to overheating and over-excursion.
Examples
QSC KW153
- Amplifier Protection:
- Thermal limiting
- Output overcurrent
- Overtemperature muting
- GuardRail™
- Transducer Protection:
- Thermal limiting
- Excursion limiting
Neumann KH 120 D
Protection circuitry: Limiter: low, high
Back to the Full List Of Speaker Specifications.
AC Power Input/Supply
This specification only applies to active and powered speakers. It refers mainly to the type of power supply used to convert power from the power mains into power to run the speaker.
This spec will also often tell us the voltage and frequency of the acceptable AC power mains (which differ from country to country).
On top of that, the specification may also include the connector type; fuse type; charge specs (if portable and/or wireless); power consumption, and other details the manufacturer thought important enough to share.
Examples
QSC KW153
AC Power Input: Universal power supply 100 – 240 VAC, 50 – 60 Hz
Denon Professional Commander Sport
Power:
- Connection: IEC
- Input Voltage: 100 – 240 VAC, 50/60 Hz
- Fuse: T2AL 250V
- Consumption: 80W
Neumann KH 120 D
Power supply: 100 to 240 V~, 50/60 Hz
Cyber Acoustics CA-3602
Power Adapter: Internal, ETL/cETL approved
Sonos Move
Power Supply:
- Charging base:100-240VAC, ~50/60Hz, 1.2A. Output: 18.0VDC, 2.5A, 45.0W.
- USB port: USB type C PD power with 45W, 20V/2.25A.
Back to the Full List Of Speaker Specifications.
AC Power Consumption
This specification tells us how much power (in watts) the active or powered speaker will consume when plugged in and working.
The power consumption specification may also list out the current draw and voltage the speaker requires.
Examples
QSC KW153
AC Power Consumption (1/8 Power):
- 100 VAC, 2.3 A
- 120 VAC, 2.01 A
- 230 VAC, 1.13 A
Neumann KH 120 D
- Power consumption (idle): 25 W
- Power consumption (full output AC): 200 W
Yamaha HS5
Power consumption: 45W
Back to the Full List Of Speaker Specifications.
Waterproof
Waterproof specifications are given for outdoor speakers and many portable speakers.
This specification is typically delivered as an IP rating.
The IP code (Ingress Protection code) is a measurement and classification of the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and water.
The first digit refers to solid particle protection on a scale from 0 to 6, while the second digit refers to liquid ingress protection on a scale from 0 to 9.
Here is a table describing the first digit (solid particle protection) in an IP rating:
IP Code First Digit (Solid Particle Protection) | Effective Against | Description |
---|---|---|
X | – | No data available. |
0 | – | No protection against contact and ingress of objects. |
1 | >50mm (2.0") | Protection against any large surface. |
2 | >12.5mm (1/2") | Protection from finger and similar-sized objects. |
3 | >2.5mm (0.098") | Protection from most tools, thick wires, etc. |
4 | >1mm (0.039") | Protection from most wires, slender screws, large ants etc. |
5 | Dust protected | Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment. |
6 | Dust-tight | No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow. |
And here is a table describing the second digit (liquid ingress protection) in an IP rating:
IP Code Second Digit (Liquid Ingress Protection) | Protection Against | Effective Against | Details |
---|---|---|---|
X | – | – | No data available. |
0 | No protection. | – | No protection against liquid ingress. |
1 | Dripping water. | Dripping water (vertically falling drops) shall have no harmful effect on the specimen when mounted in an upright position onto a turntable and rotated at 1 RPM. | Test duration: 10 minutes. Water equivalent to 1 mm (0.039 in) rainfall per minute |
2 | Dripping water when tilted at 15°. | Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. A total of four positions are tested within two axes. | Test duration: 2.5 minutes for every direction of tilt (10 minutes total). Water equivalent to 3 mm (0.12 in) rainfall per minute |
3 | Spraying water. | Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with a counterbalanced shield. Test a) is conducted for 5 minutes, then repeated with the specimen rotated horizontally by 90° for the second 5-minute test. Test b) is conducted (with shield in place) for 5 minutes minimum. | For a spray nozzle: Test duration: 1 minute per square meter for at least 5 minutes Water volume: 10 litres per minute (0.037 imperial gal/s) Pressure: 50–150 kPa (7.3–21.8 psi). For an oscillating tube: Test duration: 10 minutes Water volume: 0.07 litres per minute (0.00026 imperial gal/s) per hole. |
4 | Splashing of water. | Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. b) is conducted (without shield) for 5 minutes minimum. | Oscillating tube: Test duration: 10 minutes, or spray nozzle (same as IPX3 spray nozzle with the shield removed) |
5 | Water jets. | Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 3 minutes. Water volume: 12.5 litres per minute Pressure: 30 kPa (4.4 psi) at a distance of 3 meters (9.8 ft) |
6 | Powerful water jets. | Water projected in powerful jets (12.5 mm (0.49 in)) against the enclosure from any direction shall have no harmful effects. | Test duration: 1 minute per square meter for at least 3 minutes. Water volume: 100 liters per minute (0.37 imperial gal/s) Pressure: 100 kPa (15 psi) at distance of 3 meters (9.8 ft). |
6K | Powerful water jets with increased pressure. | Water projected in powerful jets (6.3 mm [0.25 in] nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects. Found in DIN 40050, and not IEC 60529. | Test duration: at least 3 minutes. Water volume: 75 liters per minute (0.27 impgal/s) Pressure: 1,000 kPa (150 psi) at distance of 3 meters (9.8 ft). |
7 | Immersion, up to 1 meter (3 ft 3 in) depth. | Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion). | Test duration: 30 minutes. Tested with the lowest point of the enclosure 1,000 mm (39 in) below the surface of the water, or the highest point 150 mm (5.9 in) below the surface, whichever is deeper. |
8 | Immersion, 1 meter (3 ft 3 in) or more depth. | The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects. The test depth and duration is expected to be greater than the requirements for IPx7, and other environmental effects may be added, such as temperature cycling before immersion. | Test duration: Agreement with manufacturer. Depth specified by the manufacturer, generally up to 3 meters (9.8 ft) |
9K | Powerful high-temperature water jets. | Protected against close-range high pressure, high-temperature spray downs. Smaller specimens rotate slowly on a turntable, from 4 specific angles. Larger specimens are mounted in the intended position when being used, no turntable required, and are tested freehand for at least 3 minutes at a distance of 0.15–0.2 meters (5.9 in–7.9 in). The specific requirements for the test nozzle are shown in figures 7, 8, & 9 of IEC (or EN) 60529. This test is identified as IPx9 in IEC 60529. | Test duration: Fixture: 30 sec. in each of 4 angles (2 min. total), Freehand: 1 min/m2, 3 min. minimum. Water volume: 14–16 litres per minute (0.051–0.059 imperial gal/s) Pressure: 8–10 MPa (80–100 bar) at a distance of 0.10–0.15 meters (3.9 in–5.9 in) Water temperature: 80 °C (176 °F). |
Examples
Denon Professional Commander Sport
- Waterproof: IXP4
Sonos Move
Humidity Resistant: Move meets IP56 water and dust resistance levels. Just don’t leave it out in a soaking rainstorm.
Back to the Full List Of Speaker Specifications.
Temperature
Some of the more involved manufacturers will test their speakers' coldest and hottest temperature limits and include these limits in their specs sheets.
The temperature specifications refer to the temperature range in which a speaker will perform as it should. There are typically two temperature ranges specified: the operating temperature and the storage temperature.
The operating temperature range states the range in which the speaker will perform properly. Operation outside of this range (either too cold or too hot) will lead to improper performance and even damage.
The storage temperature range is the manufacturer-defined safe range in which the speaker can be stored. Of course, it's probably unlikely that the speaker will sustain damage if stored outside of this range. Rather, this specification is more so to protect the manufacturer in the case that overly hot or cold storage ends up altering the speaker in any way.
Ensure you let your speaker cool down or warm up to the operational range before using it once taken out of storage!
Examples
Neumann KH 120 D
Temperature:
- Operation and storage, unpacked: +10 °C to +40 °C (+50 °F to +104 °F)
- Transport and storage, packed in original packaging: –25 °C to +70 °C (–13 °F to +158 °F)
Sonos Move
- Operating Temperature: 32º to 113º F (0º to 45º C)
- Storage Temperature: -13º to 158º F (-25º to 70º C)
Back to the Full List Of Speaker Specifications.
Relative Humidity
The relative humidity is the amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same temperature.
Speakers deal with electricity and humidity, which affect the circuitry and overall functionality of the speaker.
In addition to electrical problems, moist air can increase the likelihood of dust and debris settling inside the speaker, which will also have an effect on the speaker's performance.
So some manufacturers specify a relative humidity limit, at which point their speaker may not perform as intended.
Example
Neumann KH 120 D
Relative humidity:
- Operation and storage, unpacked max: 75 % (non-condensing)
- Transport and storage, packed in original packaging max: 90 % (non-condensing)
Back to the Full List Of Speaker Specifications.
Thiele-Small Parameters
The Thiele-Small (T/S) Parameters are a series of measurements that define the electromechanical properties of a loudspeaker.
These parameters generally apply to individual drivers and the sealed and vented/ported enclosures they are built into.
There are many T/S parameters that we'll encounter in different specifications sheets. They are:
- B: Magnet Flux Density In Gap
- BL: BL Product
- Cas: Driver's Acoustic Compliance
- Cmes: Electrical Capacitance Including Air-Load
- Cms: Mechanical Compliance Of Suspension
- D: Driver Diameter
- EBP: Efficiency Bandwidth Product
- F3: -3 dB Cutoff Frequency
- Fb: Resonance Frequency Of The Bass Reflex Box
- Fc: Resonance Frequency Of The Closed Box
- Fs: Resonant Frequency
- L: Coil Length
- Lces: Electrical Inductance Including Air-Load
- Le: Voice Coil Inductance
- Ms: Total Mass Of Moving Parts
- Mmd: Diaphragm Mass
- Mms: Diaphragm Mass Including Air-Load
- η₀: Reference Efficiency
- Pa: Acoustic Power
- Pe: Thermal Power Handling
- Qa: Q @ Fb Due To Absorption Losses
- Qec: Q @ Fc
- Qes: Electromagnetic Q
- Ql: Q @ Fb Due To Leakage Losses
- Qmc: Q @ Fc Due To Mechanical Losses
- Qms: Mechanical Q
- Qp: Q @ Fb Due To Port Losses
- Qtc: Pneumatic Q
- Qts: Total Q
- Re: DC Resistance
- Ras: Acoustic Losses
- Res: Electrical Losses
- Rms: Mechanical Losses
- Rg: Amplifier Source Resistance
- Sd: Surface Area Of Cone
- SPLo: SPL From 1 Watt At 1 Meter
- Vas: Compliance Equivalent Volume
- Vb: Volume Of Bass Reflex Box
- Vc: Volume Of Closed Box
- Vd: Volume Of Displacement
- Xlim: Maximum Excursion Limitation
- Xmax: Maximum Linear Excursion
- Xmech: Maximum Physical Excursion
- Xvar: Usable Excursion/Variation
- Zmax: Impedance At Resonance
For a detailed article on the Thiele-Small Parameters, check out my article Full List: Thiele-Small Speaker Parameters W/ Descriptions.
B: Magnetic Flux Density In Gap
The B parameter measures the magnetic flux density (magnetic field strength) in the driver’s gap. The magnetic field strength causes the voice coil to oscillate as an AC audio signal passes through it.
Example
B&C 8CX21
Specifications LF Unit:
- LF Flux Density: 1.1 T
Specifications HF Unit:
- Flux Density: 1.45 T
Back to the full list of Thiele-Small parameters.
BL: BL Product
The BL Product (aka Force Factor) measures the strength of the speaker motor. Stronger motors are more capable of moving larger diaphragms and, generally speaking, can handle more power.
Examples
B&C 8CX21
- Bl: 115 Txm
Eminence Delta-10A
- BL: 14.40 T-M
Dayton Audio RS255-8
BL Product (BL): 9.05 Tm
Back to the full list of Thiele-Small parameters.
Cas: Driver's Acoustic Compliance
The Cas parameter is essentially the acoustic equivalent of the Mechanical Compliance Of Suspension (Cms).
Cms is the effective compliance (inverse of stiffness) of the air that the speaker pushes across its Surface Area Of Cone (Sd).
No Examples
Back to the full list of Thiele-Small parameters.
Cmes: Electrical Capacitance Including Air-Load
The Cmes parameter is a rare find in TSP sheets. It tells us the electrical capacitance representing the mechanical mass.
In other words, Cmes tells us how well the moving cone of the speaker can hold onto electric charge as a signal is applied to the voice coil.
No Examples
Back to the full list of Thiele-Small parameters.
Cms: Mechanical Compliance Of Suspension
The Cms describes the compliance (inverse of stiffness) of the driver’s suspension, which is made of the spider and surround.
Higher compliance means the driver is easier to move but will have an effect on the suspension’s ability to prevent lateral motion; absorb shock, and reduce the resonance of the driver.
Examples
Eminence Delta-10A
- Cms: 0.18 mm/N
Dayton Audio RS225-8
Mechanical Compliance of Suspension (Cms): 0.88 mm/N
Back to the full list of Thiele-Small parameters.
D: Driver Diameter
The D parameter is the diameter of the diaphragm plus any part of the surround that moves with the diaphragm. It is not the same as the nominal diameter, which generally rounds the diameter up or down to the nearest inch or half-inch.
No Examples
Back to the full list of Thiele-Small parameters.
EBP: Efficiency Bandwidth Product
The EPB parameter is a derived value used to help designers determine what kind of enclosure would best suit the driver.
Though there are exceptions, EPB values can generally tell us the following:
- EPB >100 indicates the driver is well-suited for a ported/vented enclosure.
- EPB < 50 indicates the driver is well-suited for a sealed enclosure.
- 50 ≤ EPB ≤ 100 indicates the drive is well-suited for either enclosure type
Examples
B&C 8CX21
- EBP: 189 Hz
Eminence Delta-10A
- EBP: 189
Back to the full list of Thiele-Small parameters.
F3: -3 dB Cutoff Frequency Of Enclosure (Low-End)
It represents the frequency on the speaker’s frequency graph where the low-end roll-off passes -3 dB from average. The F3 of a driver is typically just below its resonant frequency (Fs).
No Examples
Back to the full list of Thiele-Small parameters.
Fb: Resonance Frequency Of The Bass Reflex Box
Fb refers to the manufacturer-recommended resonant frequency of a ported/vented or radiated enclosure. It is ultimately up to the speaker unit designer to follow this parameter or not when using/designing a driver in a ported/vented or radiated enclosure.
No Examples
Back to the full list of Thiele-Small parameters.
Fc: Resonance Frequency Of The Closed Box
Fc refers to the manufacturer-recommended resonant frequency of a sealed/closed enclosure. It is ultimately up to the speaker unit designer to follow this parameter or not when using/designing a driver in a sealed/closed enclosure.
No Examples
Back to the full list of Thiele-Small parameters.
Fs: Resonant Frequency
The resonant frequency Fs (sometimes labelled F0) refers to the free-air resonant frequency of the speaker driver. In other words, it’s the frequency at which the driver will move with minimal effort.
Put even differently; it is the point at which the weight of the moving parts of the speaker becomes balanced with the force of the speaker suspension when in motion.
Examples
Eminence Delta-10A
- Fs: 66 Hz
Dayton Audio RS225-8
Resonant Frequency (Fs): 28.3 Hz
Back to the full list of Thiele-Small parameters.
L: Coil Length
The T/S parameter L tells us the length of the voice coil’s wire.
No Examples
Back to the full list of Thiele-Small parameters.
Lces: Electrical Inductance Including Air-Load
The Lces parameter is a rare find in TSP sheets. It tells us the electrical inductance representing the Mechanical Compliance Of Suspension (Cms).
In other words, Lces tells us how well the suspension of the driver will resist the AC signal is applied to the voice coil as if the suspension was completely conductive.
No Examples
Back to the full list of Thiele-Small parameters.
Le: Voice Coil Inductance
This TSP described the inductance of the voice coil. Inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it.
Examples
B&C 8CX21
Parameters:
- Le: 1.2 mH
Eminence Delta-10A
- Le: 0.74 mH
Dayton Audio RS225-8
Voice Coil Inductance (Le): 0.86 mH @ 1 kHz
Back to the full list of Thiele-Small parameters.
Ms: Total Mass Of Moving Parts
The total mass of the speaker cone, including the full weight of the surround and spider.
A fairly useless measurement. Mmd and Mms are much more applicable.
No Examples
Back to the full list of Thiele-Small parameters.
Mmd: Diaphragm Mass
This TSP refers to the weight of the cone assembly (the voice coil, former, diaphragm, dust cap, half the surround, and half the spider).
No Examples
Back to the full list of Thiele-Small parameters.
Mms: Diaphragm Mass Including Air-Load
This TSP combines the Mmd mass with the air-load. The air-load (aka driver radiation mass load) is the weight of the air the driver cone must push to act properly as a transducer.
Example
Dayton Audio RS225-8
Diaphragm Mass Inc. Airload (Mms): 35.8g
Back to the full list of Thiele-Small parameters.
η₀: Reference Efficiency
This parameter tells us the power efficiency of the driver as a percentage.
In other words, the η0 parameter tells us what percentage of the electrical power applied to the driver transducer is converted into acoustic power.
Example
B&C 8CX21
Parameters:
- η₀: 1.5%
Back to the full list of Thiele-Small parameters.
Pa: Acoustic Power
The acoustic power parameter is another mostly unused parameter. It tells us the acoustic power the speaker will output when 1 watt of electrical power is sent to it.
No Examples
Back to the full list of Thiele-Small parameters.
Pe: Thermal Power Handling
The Thermal Power Handling (Pe) T/S parameter refers to the maximum amount of electrical power a driver can handle before its voice coil assembly begins to melt, burn or otherwise sustain changes and damage.
No Examples
Back to the full list of Thiele-Small parameters.
Qa: Q @ Fb Due To Absorption Losses
The Qa parameter refers to the additional damping of the loudspeaker due to the absorption losses if the manufacturer-recommended ported/vented enclosure with resonant frequency Fb is used.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qec: Q @ Fc
The Qec parameter refers to the additional damping of the loudspeaker due to the electrical losses if the manufacturer-recommended sealed/closed enclosure with resonant frequency Fc is used.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qes: Electromagnetic Q
The Qes parameter refers to the electrical damping of the loudspeaker due to the voice coil and magnet motor.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
Examples
B&C 8CX21
- Qes: 0.39
Eminence Delta-10A
- Qes: 0.35
Dayton Audio RS225-8
- Electromagnetic Q (Qes): 0.51
Back to the full list of Thiele-Small parameters.
Ql: Q @ Fb Due To Leakage Losses
The Ql parameter refers to the additional damping of the loudspeaker due to the leakage losses if the manufacturer-recommended ported/vented enclosure with resonant frequency Fb is used.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qmc: Q @ Fc Due To Mechanical Losses
The Qmc parameter refers to the additional damping of the loudspeaker due to the mechanical losses if the manufacturer-recommended sealed/closed enclosure with resonant frequency Fc is used.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qms: Mechanical Q
The Qms parameter refers to the mechanical damping of the loudspeaker due to the losses in the suspension (spider and surround).
Q is the inverse of the damping ratio, and so lower Q values mean more control.
Examples
Dayton Audio AMT Mini-8
- Qms: 1.86
B&C 8CX21
- Qms: 4.1
Eminence Delta-10A
- Qms: 6.53
Dayton Audio RS225-8
- Mechanical Q (Qms): 1.46
Back to the full list of Thiele-Small parameters.
Qp: Q @ Fb Due To Port Losses
The Qp parameter refers to the additional damping of the loudspeaker due to the port losses if the manufacturer-recommended ported/vented enclosure with resonant frequency Fb is used.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qtc: Pneumatic Q
The Qtc parameter refers to the manufacturer-recommended closed/sealed system’s Q at resonance (Fc) due to all losses.
Q is the inverse of the damping ratio, and so lower Q values mean more control.
No Examples
Back to the full list of Thiele-Small parameters.
Qts: Total Q
The Qts measurements (Total Quality Factor) is the inverse of the total damping ratio at the driver’s resonant frequency (Fs). It is defined as a combination of the mechanical Q (Qms) and the electrical Q (Qes).
Though there are exceptions, Qts values can generally tell us the following:
- Qts ≤ 0.4 indicate the driver is well-suited for a ported/vented enclosure.
- 0.4 < Qts < 0.7 indicate the driver is well-suited for a sealed enclosure.
- Qts ≥ 0.7 indicate the drive is well-suited for free-air of infinite baffle-type applications.
Examples
Dayton Audio AMT Mini-8
- Qts: 1.84
B&C 8CX21
- Qts: 0.36
Eminence Delta-10A
- Qts: 0.33
Dayton Audio RS225-8
- Total Q (Qts): 0.38
Back to the full list of Thiele-Small parameters.
Re: DC Resistance
The Re parameter refers entirely to the DC resistance (DCR) of the voice coil. Resistance is the resistance to direct electrical current in the voice coil.
DCR makes up a baseline in which the impedance (otherwise known as AC resistance) cannot drop below. The American EIA standard RS-299A specifies that Re (or DCR) should be at least 80% of the driver's rated nominal impedance (Znom).
It is rarely the case, at any frequency, that the driver will present a purely resistive load to its amplifier.
Examples
Dayton Audio AMT Mini-8
- Re: 7.92-Ohm
B&C 8CX21
- Re: 5.2 Ω
Eminence Delta-10A
- Re: 5.42 Ω
Dayton Audio RS225-8
DC Resistance (Re): 6.5 ohms
Back to the full list of Thiele-Small parameters.
Ras: Acoustic Losses
The Ras parameter is the acoustic resistance of the speaker, taking into account the acoustic losses around the driver.
It can be thought of as the acoustic equivalent of the Mechanical Resistance (Rms).
No Examples
Back to the full list of Thiele-Small parameters.
Res: Electrical Losses
The Res parameter is the electrical resistance of the speaker, taking into account the electrical losses in the driver.
It can be thought of as the electrical equivalent of the Mechanical Resistance (Rms).
No Examples
Back to the full list of Thiele-Small parameters.
Rms: Mechanical Losses
The Rms parameter is somewhat rare on TSP sheets. It refers to the mechanical resistance of the speaker, taking into account the driver’s suspension losses (damping). It acts as a measurement of the absorption qualities of the speaker suspension.
No Examples
Back to the full list of Thiele-Small parameters.
Rg: Amplifier Source Resistance
The Rg parameter is incredibly rare because most drivers are standalone devices and are not combined with a specific amplifier.
However, in the case a driver is connected to a specific amp, the Rg parameter describes the source resistance (including leads, crossovers, etc.) of the amplifier.
No Examples
Back to the full list of Thiele-Small parameters.
Sd: Surface Area Of Cone
The Sd parameter measures the effective projected area of the cone. In other words, the area of the cone that moves in order to produce sound.
Examples
Dayton Audio AMT Mini-8
- Sd: 3.8 cm2
B&C 8CX21
- Sd: 220.0 cm2 (34.1 in2)
Eminence Delta-10A
- Sd: 344.9 cm2
Dayton Audio RS225-8
Surface Area Of Cone (Sd): 213.8 cm2
Back to the full list of Thiele-Small parameters.
SPLo: SPL From 1 Watt At 1 Meter
The SPLo parameter is the same as the sensitivity rating of a speaker.
Back to the full list of Thiele-Small parameters.
Vas: Compliance Equivalent Volume
The Vas TSP measures the volume of air that has the same “stiffness” (inverse of compliance) as the driver’s suspension (Cms) when acted on by a piston of the same Surface Area Of Cone (Sd) as the driver.
Examples
B&C 8CX21
- Vas: 15.0 dm3 (0.55 ft3)
Eminence Delta-10A
- Vas: 1.08 cu.ft., 30.50 liters
Dayton Audio RS225-8
Compliance Equivalent Volume (Vas): 56.8 litres
Back to the full list of Thiele-Small parameters.
Vb: Volume Of Bass Reflex Box
Vb refers to the manufacturer-recommended volume of a ported/vented or radiated enclosure. It is ultimately up to the speaker unit designer to follow this parameter or not when using/designing a driver in a ported/vented or radiated enclosure.
No Examples
Back to the full list of Thiele-Small parameters.
Vc: Volume Of Closed Box
Vc refers to the manufacturer-recommended volume of a sealed/closed enclosure. It is ultimately up to the speaker unit designer to follow this parameter or not when using/designing a driver in a sealed/closed enclosure.
No Examples
Back to the full list of Thiele-Small parameters.
Vd: Volume Of Displacement
The Vd Thiele-Small parameter tells us the maximum volume of air a speaker is capable of displacing while maintaining linear movement.
Vd values indicate how loud a speaker can get at low frequencies—the greater the volume of displaced air, the louder the bass.
Examples
Eminence Delta-10A
- Vd: 121.0 cc
Dayton Audio RS225-8
Volume Of Displacement (Vd): 149.7 cm3
Back to the full list of Thiele-Small parameters.
Xlim: Maximum Excursion Limitation
The Xlim parameter is specific to Eminence speakers. The Eminence Delta-10A is listed in the examples below.
Xlim is expressed by Eminence as the lowest of four potential failure condition measurements:
- Spider crashing on top plate.
- Voice coil bottoming on back plate.
- Voice coil coming out of gap above core
- The physical limitation of cone.
Example
Eminence Delta-10A
- Xlim: 9.4 mm
Back to the full list of Thiele-Small parameters.
Xmax: Maximum Linear Excursion
The Xmax T/S parameter is the maximum distance a speaker can travel linearly without distorting the sound.
Examples
B&C 8CX21
- Xmax: 5.0mm
Eminence Delta-10A
- Xmax: 3.50 mm
Dayton Audio RS225-8
Maximum Linear Excursion (Xmax): 7.0 mm
Back to the full list of Thiele-Small parameters.
Xmech: Maximum Physical Excursion
The Xmech T/S parameter is the maximum distance a speaker can travel without damaging the driver.
No Examples
Back to the full list of Thiele-Small parameters.
Xvar: Usable Excursion/Variation
The Xvar parameter is specific to B&C speakers. The B&C 8CX21 is listed in the examples below.
Xvar represents the excursion limit (beyond the Maximum Linear Excursion (Xmax)) in which the magnetic field is seen by the voice coil (B); the total suspension compliance (Cms), or both, drops below 50% or their stated small-signal values.
Example
B&C 8CX21
- Xvar: 5.5mm
Back to the full list of Thiele-Small parameters.
Zmax: Impedance At Resonance
The impedance of a speaker is frequency-dependent, and a spike in impedance happens at the resonant frequency (Fs) of the speaker.
No Examples
Back to the full list of Thiele-Small parameters.
Back to the Full List Of Speaker Specifications.
Taps
Multi-speaker distributed speaker systems are designed to be easily installed by simply adding the wattage tap ratings of each speaker and ensuring the sum of the taps does not exceed the limits of the power amplifier.
These systems work by sending high-voltage signals from the amplifier and equipping each speaker with a step-down transformer to bring down the voltage to speaker level.
So then, speakers designed for distributed systems have power taps. These power taps change the way in which the transformer acts.
Oftentimes the transformer taps will have various wattage switches (to allow varying amounts of power), and ohm switched (to match varying impedances).
A power tap, once set, indicates the maximum power the speaker can receive (and limits the power draw the speaker takes from the amplifier).
The taps can also be rated in volts that coincide with the names of the distributed system (notably 25V, 70V and 100V distributed systems).
Example
JBL CSS8008
- 100V Taps: 5W, 2.5W, 1.3W
- 70V Taps: 5W, 2.5W, 1.3W, 0.7W
- 25V Taps: 5W, 2.5W, 1.3W, 0.7W
Back to the Full List Of Speaker Specifications.
Transformer Insertion Loss
Transformer insertion loss refers to the lost signal power caused by losses due to inefficiencies in the transformer.
Example
JBL CSS8008
- Transformer Insertion Loss: 1.5 dB Maximum
Back to the Full List Of Speaker Specifications.
Transformer Connection
This spec refers to how we would connect the transformer (and, thus, the speaker) to the main signal wire of the distributed system.
Example
JBL CSS8008
- Transformer Connection: Bare wire
Back to the Full List Of Speaker Specifications.
Matching Backcan
Backcans (also known as back boxes) are devices used to capture and redirect the sound waves emanating from in-ceiling/in-wall speakers.
The volume of the backcan (which acts as a sort of enclosure) will play a role in the speaker's overall sound.
Note that space limitations behind the mounting surface may only allow for a smaller backcan.
Not all installed speakers will work with all backcans. This spec simply lists out compatible options.
Example
JBL CSS8008
- Matching CSS Backcan: CSS-BB8 (0.15 cu ft)
- Other Compatible Backcans:
- MTC-81BB8 (0.26 cu ft)
- MTC-200BB6 (0.5 cu ft)
- MTC-300BB8 (1.0 cu ft)
Back to the Full List Of Speaker Specifications.
Cable Lengths
Some speakers (particularly multi-speaker systems for computers) require wiring between the main powered speaker and the satellite speaker (among other connections).
If the speaker(s) come with their own cables, a cable length specification is often included on the datasheet.
Example
Cyber Acoustics CA-3602
Approximate Length:
- Power Cable: 5 ft.
- Speaker to Speaker Cable: Separates up to 11 ft.
- Speaker to Subwoofer Cable: 6 ft.
- Input Cable: 6 ft. From Control Pod
- Control Pod Cable: 6 ft.
Back to the Full List Of Speaker Specifications.
Bluetooth Specifications
There are plenty of wireless Bluetooth speakers on the market today.
Though it's seemingly simple to set up (pair) Bluetooth devices, there is actually a lot of technical detail that goes into defining exactly how the Bluetooth speaker receives information.
Therefore, many Bluetooth speakers have a dedicated section within their specifications that shows the details about the Bluetooth connectivity of the speaker.
The Bluetooth specifications include:
Bluetooth Version
The Bluetooth protocol is constantly being improved upon with periodic releases of the newest version.
Each new version builds up the previous, adding extra functionality and increased efficiency while always remaining backward compatible.
Two Bluetooth devices with different versions can be paired with functionality limited to that of the earlier version.
Bluetooth Profiles
Bluetooth profiles determine the kind of data that is exchanged using Bluetooth technology.
For two Bluetooth devices to be compatible, they must support the same profiles.
Each profile has its own lists of codecs that it uses to exchange information.
Bluetooth Modulation
Bluetooth transmits digital information (modulating signals) via radio frequencies (carrier signals).
There are many different types of digital modulation available for use. This spec tells use which modulation(s) are used in transmitting audio to the speaker.
Bluetooth Range
The Bluetooth range specification refers to the maximum distance between the speaker and its paired device. Exceeding this range will lead to improper transmission between devices.
Bluetooth Frequency Range
The Bluetooth protocol transmits digital data on radio waves in the range of 2.402 – 2.480 GHz. This is the standard that is sometimes stated for clarity on Bluetooth speaker specifications sheets.
Bluetooth Transmission Power
This specification refers to the amount of power in the Bluetooth transmission.
Examples
Denon Professional Commander Sport
Bluetooth Specifications:
- Version: 4.0
- Profiles: A2DP, AVRCP
- Range: Up to 60-feet (20m)*
- Maximum Transmission Power: +4 dBm
- Frequency: 2.4 – 2.48 GHz
JBL Charge 4
- Bluetooth® version: 4.2
- Bluetooth® transmitter power: 0-20dBm
- Bluetooth® transmitter frequency range: 2.402 – 2.480GHz
- Bluetooth® transmitter modulation: GFSK, π/4 DQPSK, 8DPSK
Back to the Full List Of Speaker Specifications.
Battery
Batteries typically power portable speakers. These batteries are described within the speaker specifications sheet.
Rather than getting into detail about each detail, let's quickly run through the typical battery specifications:
- Type: the type of battery along with its voltage and Amp-hours ratings.
- Life/playtime: how long the battery will last from full charge under normal conditions.
- Charge time: the amount of time it takes the battery to charge from 0% to 100%.
- Charge port: the type of connection used to charge the speaker.
- USB charge out: if the battery can be used to charge other devices (with voltage/current ratings).
- Replacement/disposal: information on how to replace and/or dispose of the battery.
Examples
Denon Professional Commander Sport
Battery:
- Battery: 12V 7Ah
- Battery Life: up to 40 hours
- Battery Recharge Time: 8 hours
JBL Charge 4
- Battery type: Lithium-ion Polymer 27Wh (Equivalent to 3.6V, 7500mAh)
- Battery charge time: 4 hours (5V/2.3A)
- Music playtime: up to 20 hours (varies by volume level and audio content)
- USB charge out: 5V/2A (maximum)
Sonos Move
Battery pack:
- Capacity: 2420-2500maH
- Replacement: Visit our website www.sonos.com for more information.
- Disposal: Check with your local waste or recycling company to determine the proper disposal method in your area.
Back to the Full List Of Speaker Specifications.
Microphone
Some speakers will be designed with microphones. This is generally the case with smart devices (which incorporate speakers and microphones) and is sometimes the case with consumer-grade portable PA speakers.
This specification can pack a lot of information, including:
- Number of microphones
- Microphone array type
- Microphone type
- Powering method
- Wireless operating frequency range
- Wireless channels available in the speaker
- Microphone indicators
- Other microphone specifications
To learn more about microphone specifications, I have an analogous article on mic specs titled Full List Of Microphone Specifications (How To Read A Spec Sheet) and a shorter, more in-depth article titled Top 5 Microphone Specifications You Need To Understand.
Examples
Denon Professional Commander Sport
Wireless Microphone:
- Power: 2 x AA alkaline batteries
- Operating Frequency: UHF 584 – 608 MHz
- Available Channels: 16
Sonos Move
Microphones:
- Far-field microphone array.
- Microphone LED, hard-wired to the voice microphones for extra privacy control so you’re always aware when the microphone is active.
Back to the Full List Of Speaker Specifications.
Voice Control
Smart speakers (or smart devices with speakers, I should say) are often voice-activated. The voice control specification will tell if or if not the “smart speaker” has voice control (they nearly all do) and may give additional details.
Example
Sonos Move
Voice Control: Integrated voice control.
Back to the Full List Of Speaker Specifications.
Smart Specifications
If the speaker happens to be part of a smart device, then there may be any of the following specifications included in the datasheet:
- Virtual assistant support: which of the virtual assistants (Apple Siri, Amazon Alexa, Google Assistant, etc.) the smart device supports.
- OS compatibility: which operating system the smart device can be paired with.
- Processor: the computer processor used and its specs
- RAM: amount of random access memory
- Storage capacity: the amount of storage space in the smart device.
No Examples
Back to the Full List Of Speaker Specifications.
Wireless Connectivity
The wireless connectivity specification applies to wireless speakers and the way in which they connect to audio sources wirelessly.
This specification often encompasses the aforementioned Bluetooth specifications/standard listed above.
However, it will also tell us if the speaker connects wirelessly via non-Bluetooth standards (WiFi or RF) and will also include any other wireless features of the speaker (including microphones).
Note that the exact term “wireless connectivity” isn't always used. Therefore, we must make our own judgment to figure out if a specification is referring to wireless connectivity or not.
Examples
Denon Professional Commander Sport
- Wireless Microphone:
- Power: 2 x AA alkaline batteries
- Operating Frequency: UHF 584 – 608 MHz
- Available Channels: 16
- Bluetooth Specifications:
- Version: 4.0
- Profiles: A2DP, AVRCP
- Range: Up to 60-feet (20m)*
- Maximum Transmission Power: +4 dBm
- Frequency: 2.4 – 2.48 GHz
Sonos Move
Wireless Connectivity: Connects to your home WiFi network with any router that supports 802.11b/g/n in 2.4GHz or 802.11a/n in 5GHz.
Back to the Full List Of Speaker Specifications.
Channel Configuration
Channel configuration only applies to a multi-speaker system. This is often the case when buying computer speakers or home theatre/entertainment systems.
In pro markets, speakers are generally sold individually. In consumer markets, it's common to find speaker systems with channel configurations.
There are several channel configurations. Let's define a few:
- 2.0 normal stereo: Includes a left and right channel with a “left” and “right” speaker.
- 2.1 normal stereo + subwoofer: Includes a normal left-channel speaker and right-channel speaker with the addition of a (center) subwoofer.
- 5.1 surround sound: Has a stereo pair; a center speaker; a rear-left and rear-right plus a subwoofer.
Example
Cyber Acoustics CA-3602
The Cyber Acoustics CA-3602 computer speakers have a 2:1 channel configuration.
Back to the Full List Of Speaker Specifications.
Built From
The “built from” spec simply states the year (and perhaps a more specific time within the year) in which the speaker in question was introduced to the marketplace.
Example
Klipsch Reference R-100SW
Built From: 2018
Back to the Full List Of Speaker Specifications.
List Price
The list price (aka manufacturer's suggested retail price or MSRP) is the price at which the speaker manufacturer recommends that retailers sell the speaker.
Examples
Dayton Audio AMT Mini-8
List Price: $39.99
Dayton Audio RS225-8
List Price: $74.99
Back to the Full List Of Speaker Specifications.
Certifications
Certifications are handed out by safety, standards and other regulatory organizations/committees.
Manufacturers may include certificates given to their speaker in the specs sheet to further prove their speaker's performance and the accuracy of the information contained within the specs sheet.
No Examples
Back to the Full List Of Speaker Specifications.
Safety Agency
Safety agency specifications and certifications are issued by safety standards and other regulatory organizations/committees.
Including this information in a specifications sheet helps the manufacturer prove the safety and performance of their speaker by referencing specific standards of testing.
Example
JBL CSS8008
Safety Agency: Suitable for use in air handling spaces per UL1480, UL2043, NFPA 90 & NFPA 70, when installed with corresponding UL Listed backcan, below. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
Back to the Full List Of Speaker Specifications.
Warranty
A warranty is a written guarantee issued to the purchaser of an article by its manufacturer, promising to repair or replace it if necessary within a specified period of time.
The warranty specification may let the buyer know a few key details about the warranty offered by the manufacturer:
- How long the manufacturer's warranty will apply to one of their newly-purchased speakers
- If the warranty will be voided if the speaker is bought secondhand
- What the warranty will cover and will not cover
- Other limitations of the warranty
- If there are any necessary steps to obtain the warranty (product registry, for example)
Example
Dayton Audio RS225-8
Warranty – Parts & Labor: 5 Years
Back to the Full List Of Speaker Specifications.
Included Accessories
The included accessories “specification” lists out the other pieces that will come with a brand new purchase of the speaker.
Listed accessories often include:
- Manuals & Guides
- Mounting equipment
- Chargers
- Power adapters
- Stands
Note that buying secondhand equipment does not ensure all the included accessories will actually be included!
Examples
JBL CSS8008
Included Accessories: 4 pcs M4 x 40 mm sheet metal screws for attaching speaker/driver/transformer assembly to the corresponding backcan.
Sonos Move
Package Contents: Sonos Move, charging base, and Quickstart guide.
Back to the Full List Of Speaker Specifications.
Optional/Available Accessories
Manufacturers may also include a list of their accessories that would suit the speaker well but are not included in a brand new purchase of the speaker.
These accessories often include:
- Covers & Cases
- Stands
- Mounting Accessories
Examples
QSC KW153
Available Accessories:
- KW153 COVER
- M10 KIT-W
Neumann KH 120 D
Optional accessories:
- BKH 120: Soft carry bag for 1 pair of KH 120
- FKH 120: Flight case for 1 pair of KH 120
- LH 28: Tripod stand adapter
- LH 29: TV spigot (lighting stand adapter)
- LH 32: Wall L-bracket
- LH 43: Surface mounting plate
- LH 45: Wall bracket
- LH 46: Adjustable ceiling drop adapter
- LH 47: Mounting adapter plate
- LH 48: Tripod adapter plate
- LH 61: Adjustable L-bracket
- LH 64: Omnimount/VESA adapter
- LH 65: Table stand
Back to the Full List Of Speaker Specifications.
Speaker Examples For This Article
Examples are always good. As discussed, there are plenty of speaker types with plenty of speaker specifications.
In writing this article, I have gone through many different specifications sheets to determine the specs manufacturers include in their speakers.
The specifications defined in this article can be found in the spec sheets of the following speaker types and, more specifically, in the example speakers I'll share.
Passive 2-Way PA Speaker
The Electro-Voice ZLX-15 is a 2-way 1000W passive PA speaker with a 15″ woofer.
Note that Electro-Voice also produces a powered version of the ZLX-15 (the ZLX-15P) and a Bluetooth-capable version (the ZLX-15BT).
Electro-Voice ZLX-15 Specification Sheet
- Features:
- 15-inch woofer for extended low-frequency response and 1.5-inch high-frequency titanium compression driver.
- Durable composite construction with innovative hi/lo grip design for easy pole mounting.
- Exclusive split-baffle design for superior driver time alignment.
- Model: ZLX-15
- Frequency Response: 56 Hz – 18 kHz
- Frequency Range: 44 Hz – 20 kHz
- Axial Sensitivity: 96 dB
- Maximum SPL: 126 dB
- Recommended HP Frequency: 40 Hz
- Coverage (Horizontal x Vertical): 90° x 60°
- Power Handling:
- 250 Watts Continuous
- 1000 Watts Peak
- LF Transducer: EVS-15L, 380 mm (15 in) Woofer
- HF Transducer: DH-1K
- Crossover Frequency: 1.7 kHz
- Nominal Impedance: 8 Ω
- Minimum Impedance: 7 Ω
- Connectors: Dual NL4
- Enclosure: Polypropylene
- Grille: 18 Gauge Steel with Black Powder Coat
- Dimensions:
- H: 685 mm (27 in
- W: 423 mm (17 in)
- D: 383 mm (15 in)
- Net Weight: 16.6 kg (36.5 lbs)
- Shipping Weight: 22.0 kg (48.3 lbs)
Electro-Voice
Electro-Voice is featured in My New Microphone's Top 11 Best PA Loudspeaker Brands You Should Know And Use.
Back to the Full List Of Speaker Specifications.
Powered 2-Way PA Speaker
The Electro-Voice ZLX-12P is a 2-way 100W powered PA Speaker with a 12″ woofer.
Electro-Voice ZLX-12P Specifications Sheet
- Features:
- LCD display and 1-knob DSP control with presets for precise and speedy setup.
- Input level meters and independent amplifier control to ensure optimal gain structure.
- Front LED for “power on” and “limit” indication.
- Patented split-baffle design for superior driver time alignment.
- Durable composite construction with innovative hi/lo grip design for easy pole mounting.
- Model: ZLX-12P
- Frequency Response: 65 Hz – 18 kHz
- Frequency Range: 50 Hz – 20 kHz
- Maximum SPL: 126 dB
- Coverage (Horizontal x Vertical): 90° x 60°
- Power Rating: 1000 Watts
- LF Transducer: EVS-12K, 300 mm (12 in) Woofer
- HF Transducer: DH-1K
- Connectors:
- (2) XLR/TRS Combo Jack
- (1) 3.5 mm Input
- (1) XLR link Output
- Enclosure: Polypropylene
- Grille: 18 Gauge Steel with Black Powder Coat
- Dimensions:
- H: 610 mm (24 in)
- W: 356 mm (14 in)
- D: 356 mm (14 in)
- Net Weight: 15.6 kg (34.3 lbs)
- Shipping Weight: 19.0 kg (41.8 lbs)
Back to the Full List Of Speaker Specifications.
Active 3-Way PA Speaker
The QSC KW153 is a 3-way active PA speaker with a 15″ woofer.
QSC KW153 Manual (Specifications)
- Features:
- Birch plywood enclosure
- Steel grille
- Front LED
- Cast aluminum handles (2)
- 1000 W Class D power module
- M10 rigging points (11)
- 35 mm pole socket
- Slip-resistant feet
- Configuration: 15″ 3-way trapezoidal loudspeaker
- Transducers:
- Low-frequency: 15″ cone transducer
- Mid-frequency: 6.5″ mid range cone transducer
- High-frequency: 1.75″ diaphragm compression driver
- Frequency Response (-6 dB): 35 Hz – 18 kHz
- Frequency Range (-10 dB): 33 Hz – 20 kHz
- Nominal Coverage (-6 dB): 75° axisymmetric
- Maximum SPL (1 meter): 134 dB peak
- Amplifiers Power Output: 1000 W Class D (500 W LF, 500 W MF/HF) continuous
- Input Impedance (Ω):
- Channel A XLR /¼”:
- Mic gain setting:
- 0 dB: 38 kΩ (Balanced) 19 kΩ (Unbalanced)
- +12 dB: 10 kΩ (Balanced) 5 kΩ (Unbalanced)
- +24 dB: 2.66 kΩ (Balanced) 1.33 kΩ (Unbalanced)
- +36 dB: 660 Ω (Balanced) 330 Ω (Unbalanced)
- Mic gain setting:
- Channel B XLR /¼”: 38 kΩ balanced / 19 kΩ unbalanced
- Channel B RCA: 10 kΩ
- Channel A XLR /¼”:
- Controls:
- Power
- Gain A
- Gain B
- Channel A Input Gain (0 dB / 12 dB / 24 dB / 36 dB) •
- LF Mode (Ext Sub /Norm/DEEP™)
- HF Mode (Flat/ Vocal Boost) Front LED (On /Off/Limit)
- Indicators
- Power
- Signal A
- Signal B
- Standby
- Limit
- Mic (24 dB and 36 dB settings)
- Connectors:
- Balanced female XLR /¼” line/mic level input
- Balanced female XLR /¼” line level input
- Dual Balanced male XLR full range line level out
- Balanced male XLR “mix” out
- Stereo RCA line level input
- Remote gain control
- Locking IEC power connector
- Cooling: On-demand, 50 mm variable speed fan
- Amplifier Protection:
- Thermal limiting
- Output overcurrent
- Overtemperature muting
- GuardRail™
- Transducer Protection:
- Thermal limiting
- Excursion limiting
- AC Power Input: Universal power supply 100 – 240 VAC, 50 – 60 Hz
- AC Power Consumption (1/8 Power):
- 100 VAC, 2.3 A
- 120 VAC, 2.01 A
- 230 VAC, 1.13 A
- Enclosure: 15 mm painted birch plywood
- Finish: Black textured paint
- Grille: Black powder coated 16 gauge steel
- Dimensions:
- H: 43.1″ (1094 mm)
- W: 18.5″ (470 mm)
- D: 16.8″ (427 mm)
- Weight (Net): 87 lb (39.5 kg)
- Available Accessories:
- KW153 COVER
- M10 KIT-W
QSC
QSC is featured in My New Microphone's Top 11 Best PA Loudspeaker Brands You Should Know And Use.
Back to the Full List Of Speaker Specifications.
Portable PA Speaker
The Denon Professional Commander Sport is an all-in-one portable PA speaker complete with wireless microphones.
Denon Professional Commander Sport Specifications
- Key Features:
- Two-way design / 8-inch woofer & 1-inch tweeter
- IPX4 water-resistant rating – sealed box design
- Tempo control
- Battery or AC-powered
- Handheld wireless microphone transmitter included
- Bluetooth 4.0 playback
- SD/USB media playback
- XLR combo Mic/Line input
- 3.5mm TRS AUX input
- Speakers:
- Tweeter: 3″ (80mm)
- Woofer: 8″ (203mm)
- Power: 120W continuous
- Frequency Response: 20 – 20 kHz
- Waterproof: IXP4
- Connectors:
- (1) XLR/1/4″ TRS combo jack
- (1) 1/4″ (6.35mm) output
- (1) 1/8″ (3.5mm) input
- (2) USB ports
- (1) IEC AC power input
- Wireless Microphone:
- Power: 2 x AA alkaline batteries
- Operating Frequency: UHF 584 – 608 MHz
- Available Channels: 16
- Bluetooth Specifications:
- Version: 4.0
- Profiles: A2DP, AVRCP
- Range: Up to 60-feet (20m)*
- Maximum Transmission Power: +4 dBm
- Frequency: 2.4 – 2.48 GHz
- Power:
- Connection: IEC
- Input Voltage: 100 – 240 VAC, 50/60 Hz
- Fuse: T2AL 250V
- Consumption: 80W
- Battery:
- Battery: 12V 7Ah
- Battery Life: up to 40 hours
- Battery Recharge Time: 8 hours
- Dimensions:
- W: 17.7″ (449mm)
- D: 8.9″ (228mm)
- H: 20.1″ (510mm)
- Weight: 25.8 lbs (11.7 kg)
Back to the Full List Of Speaker Specifications.
Digital Studio Monitor
The Neumann KH 120 D is a 2-way digital studio monitor with a 5 1/4″ woofer and 1″ tweeter.
Link to find the Neumann KH 120 D Manual (Specifications) at Neumann.com
Features:
- Compact bi-amplified studio monitor with a high efficiency
- Exceptional bass depth and transient response from 52 to 21k Hz
- Precise dispersion, optimized for near-field applications
- Digital Input and delay (max. 400 ms)
- As a stereo system with KH 750 DSP and iPad® app, controllable and alignable to the room*
Acoustics:
- -3 dB free-field frequency response: 52 Hz to 21 kHz, ±3 dB
- Passband free-field frequency response: 54 Hz to 20 kHz, ±2 dB
- Self-generated noise (with input gain set to 100 dB for 0 dBu): <20 dB(A) at 10 cm
- Total harmonic distortion < 0.5 % at 95 dB SPL at 1 m: >100 Hz
- Max. SPL in full space / calc. in half-space at 3 % THD at 1 m, averaged between 100 Hz and 6 kHz: 105.1 dB SPL / 111.1 dB SPL
- Bass capability (Max. SPL in half-space with 3 % THD at 1 m, averaged between 50 Hz and 100 Hz): 104.8 dB SPL
- Max. short term SPL with IEC-weighted noise (IEC 60268-5) at 1 m, in typical listening conditions: 107 dB(C) SPL
- Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair):
- 97 dB(C) SPL (full range)
- 104 dB(C) SPL (with subwoofer)
- Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single/pair):
- 88/93 dB(C) SPL (full range)
- 89/94 dB(C) SPL (with subwoofer)
Electronics:
- Woofer amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
- Tweeter amplifier, continuous (peak) output power: 50 W (80 W), THD and noise < 0.1 % with deactivated limiter
- Controller design: analog, active
- Crossover frequency; crossover slope: 2.0 kHz; 24 dB/oct., 4th order
- ACOUSTICAL CONTROLS switches:
- BASS: 0, -2.5, -5, -7.5 dB
- LOW-MID: 0, -1.5, -3, -4.5 dB
- TREBLE: +1, 0, -1, -2 dB
- Protection circuitry: Limiter: low, high
- Infrasonic filter frequency; slope: 30 Hz; 6 dB/oct.
Analog input:
- Input type: XLR, electronically balanced
- Input Impedance (depending on the position of the OUTPUT LEVEL switch 8):
- 114 dB SPL – 20 kΩ
- 108 dB SPL – 10 kΩ
- 100 dB SPL – 20 kΩ
- 94 dB SPL – 10 kΩ
- Input gain control (sensitivity): 0 dB to -15 dB
- OUTPUT LEVEL switch: 94, 100, 108, 114 dB SPL
- CMRR:
- > 56 dB, 100 Hz to 10 kHz (ANALOG mode)
- > 56 dB, 100 Hz to 12 kHz (ANALOG DELAYED mode)
- Maximum input level:
- 24 dBu (ANALOG mode)
- 18 dBu (ANALOG DELAYED mode)
Digital input/output:
- Signal format BNC: AES3, S/P-DIF
- Impedance BNC, unbalanced: 75 Ω (input and output)
- Input switching: Analog/Digital A/Digital B/Digital A+B
- Digital converter: resolution
- 16 … 24-bit
- Digital converter: sampling rates [kHz]*
- 22.05, 24, 32, 44.1, 48, 64, 88.2, 96, 176.4, 192
- Digital sensitivity: -18 dBFS = 100 dB SPL at 1 m
- Dynamic range: A-D-A, D-A: > 116 dB(A), 123 dB(A)
- THD+N:
- analog delayed: < -104 dB
- digital: < -106 dB
- Maximum delay (time / distance): 409.5 ms / 140.87 m (462′ 2″)
- Maximum delay audio-video synchronization (lip sync):
- 10.2 at 40 ms/frame
- 12.3 at 33 ms/frame
- Minimum delay resolution (time / distance): 0.1 ms / 3.44 cm (1 3/8″)
- Latency D-A (with delay = 0 ms) **
- 1.84 ms at 22.05 kHz
- 1.70 ms at 24 kHz
- 1.28 ms at 32 kHz
- 0.93 ms at 44.1 kHz
- 0.86 ms at 48 kHz
- 0.64 ms at 64 kHz
- 0.47 ms at 88.2 kHz
- 0.43 ms at 96 kHz
- 0.24 ms at 176.4 kHz
- 0.22 ms at 192 kHz
- Latency A-D-A (with delay = 0 ms): 0.54 ms
- DELAY rotary switches E and SIGNAL SELECT rotary switch D setting acknowledgement: Neumann logo “Red” 3 flashes
- Digital error/Loudspeaker’s protection system is active: Neumann logo “Red” 1 flash
Product properties:
- Power supply: 100 to 240 V~, 50/60 Hz
- Power consumption (idle): 25 W
- Power consumption (full output AC): 200 W
- Dimensions (H x W x D): 277 x 182 x 220 mm (107 /8″ x 71 /8″ x 85 /8″)
- Internal net volume/external volume: 6.5 l/9.7 l
- Weight: 6.5 kg (14 lbs 5 oz)
- Drivers – woofer, tweeter magnetically shielded: 130 mm (5.25″), 25 mm (1″)
- Threaded inserts for Neumann mounting hardware: 2 x M8 on rear panel with depth 15 mm (5 /8″)
- Cabinet surface finish, Color:
- painted aluminium
- Anthracite (RAL 7021) or
- White (9016) or
- other RAL color
Temperature:
- Operation and storage, unpacked: +10 °C to +40 °C (+50 °F to +104 °F)
- Transport and storage, packed in original packaging: –25 °C to +70 °C (–13 °F to +158 °F)
Relative humidity:
- Operation and storage, unpacked max: 75 % (non-condensing)
- Transport and storage, packed in original packaging max: 90 % (non-condensing)
Delivery includes:
- KH 120 D
- 4 Self-adhesive feet
- 1 Quick guide
- 1 Safety guide
Optional accessories:
- BKH 120: Soft carry bag for 1 pair of KH 120
- FKH 120: Flight case for 1 pair of KH 120
- LH 28: Tripod stand adapter
- LH 29: TV spigot (lighting stand adapter)
- LH 32: Wall L-bracket
- LH 43: Surface mounting plate
- LH 45: Wall bracket
- LH 46: Adjustable ceiling drop adapter
- LH 47: Mounting adapter plate
- LH 48: Tripod adapter plate
- LH 61: Adjustable L-bracket
- LH 64: Omnimount/VESA adapter
- LH 65: Table stand
Neumann
Neumann is featured in My New Microphone's Top 11 Best Studio Monitor Brands You Should Know And Use.
Back to the Full List Of Speaker Specifications.
Analog Studio Monitor
The Yamaha HS5 is a 2-way analog studio monitor with a 5″ woofer and 1″ tweeter.
- Features:
- Accurate, detailed reproduction of the source.
- Simple 2-way design in the full-range models, with optimally matched high and low-frequency units.
- Response-tailoring controls match speaker output to a wide range of acoustic spaces.
- In addition to studio standard XLR connectors, phone jacks allow direct connection of electronic musical instruments and other sources.
- Speaker type: 2-way bi-amp powered studio monitor
- Overall Frequency Response:
- –3 dB: 74 Hz – 24 kHz
- –10 dB: 54Hz – 30kHz
- Components:
- LF: 5″ cone
- HF: 1″ dome
- Crossover: 2 kHz
- Output power:
- Total: 70W (dynamic power)
- LF: 45W (4 ohms)
- HF: 25W (8 ohms)
- Input sensitivity / Impedance: -10 dBu / 10k ohms
- I/O connectors:
- XLR3-31 type (balanced)
- PHONE (balanced)
- Power consumption: 45W
- Shape: Bass-reflex type
- Cabinet material: MDF
- Dimensions:
- W: 170mm (6.7″)
- H: 285mm (11.2″)
- D: 222mm (8.7″)
- Net weight: 5.3kg (11.7 lbs.)
- Others:
- LEVEL control: +4dB/center click
- EQ: HIGH TRIM switch: +/- 2dB at HF
- ROOM CONTROL switch: 0/-2/-4 dB under 500Hz
- Indicator: Power ON (White LED)
Yamaha
Yamaha is featured in My New Microphone's Top 11 Best Studio Monitor Brands You Should Know And Use.
Back to the Full List Of Speaker Specifications.
Installed Speaker
The JBL CSS8008 8″ Multi-Tap Ceiling Speaker is an 8″ speaker designed for distributed speaker systems.
check out links to download the JBL CSS8008 Specifications.
- Features:
- High 96 dB sensitivity
- 5 Watt multi-tap transformer for 100V, 70V and 25V distributed lines
- 120° conical coverage
- Fits CSS-BB8 backcan
- Driver Size (dual-cone): 200 mm (8 in)
- Driver Sensitivity (mid-range) (1W [2.83V], 1m, 2k – 6k Hz): 96 dB
- Frequency Range (-10 dB):
- Driver/Grille Assembly: 55 Hz – 16 kHz
- Installed in CSS-BB backcan: 100 Hz – 16 kHz
- Coverage (2 kHz): 120°
- Driver Continuous Power Handling: 15 Watts
- 100V Taps: 5W, 2.5W, 1.3W
- 70V Taps: 5W, 2.5W, 1.3W, 0.7W
- 25V Taps: 5W, 2.5W, 1.3W, 0.7W
- Transformer Insertion Loss: 1.5 dB Maximum
- Transformer Connection: Bare wire
- Motor Mass: 200 g (7 oz)
- Safety Agency: Suitable for use in air handling spaces per UL1480, UL2043, NFPA 90 & NFPA 70, when installed with corresponding UL Listed backcan, below. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
- Matching CSS Backcan: CSS-BB8 (0.15 cu ft)
- Other Compatible Backcans:
- MTC-81BB8 (0.26 cu ft)
- MTC-200BB6 (0.5 cu ft)
- MTC-300BB8 (1.0 cu ft)
- Bolt Mounting Circle to Backcan: 4 points on 286 mm (11.25 in) diameter
- Cutout Diameter:
- Open-back: 216 mm (8.5 in)
- In CSS-BB backcan: 295 mm (11.7 in)
- Depth (behind grille): 71 mm (2.8 in)
- Grille Diameter: 327 mm (12.9 in)
- Net Weight (ea): 1.27 kg (2.8 lb)
- Shipping Weight (ea): 1.94 kg (4.3 lb)
- Included Accessories: 4 pcs M4 x 40 mm sheet metal screws for attaching speaker/driver/transformer assembly to corresponding backcan.
JBL
JBL is featured in My New Microphone's Top 10 Best Loudspeaker Brands (Overall) On The Market Today.
Back to the Full List Of Speaker Specifications.
Computer Speakers
The Cyber Acoustics CA-3602 is a 2.1 stereo computer speaker system.
Cyber Acoustics CA-3602 Specifications.
- Features:
- Convenient desktop control pod:
- On/off switch
- Master volume
- Bass volume control
- Headphone output jack
- Auxiliary input jack
- Magnetically shielded satellites
- Internal Power Supply
- Convenient desktop control pod:
- Total RMS: 30 watts
- Total Peak Power: 62 Watts
- Wattage (Satellites): Each speaker: 6 watts/ch @ 4 ohm @ 10% THD
- Wattage (Subwoofer): 18 watts @ 4 ohm @ 10% THD
- Satellite Drivers: 2 X 2 in. high-efficiency drivers
- Subwoofer Driver: 5.25 in. Power Pro Series driver
- Satellite Dimensions: (H) 8 in. X (W) 3 in. X (D) 3 in.
- Subwoofer Dimensions: (H) 10 in. X (W) 8 in. X (D) 8 in.
- Plug Type: Chrome, 3.5 mm plug
- Approximate Length:
- Power Cable: 5 ft.
- Speaker to Speaker Cable: Separates up to 11 ft.
- Speaker to Subwoofer Cable: 6 ft.
- Input Cable: 6 ft. From Control Pod
- Control Pod Cable: 6 ft.
- On/Off: Yes
- Volume: Yes
- Subwoofer Volume: Yes
- Headphone Output: Yes
- Aux Input: Yes
- Power Adapter: Internal, ETL/cETL approved
Back to the Full List Of Speaker Specifications.
Bluetooth Speaker
The JBL Charge 4 is a small portable wireless Bluetooth speaker.
JBL Charge 4 Manual/Specifications
- Features:
- Wireless Bluetooth Streaming
- 20 hours of playtime
- IPX7 waterproof
- JBL Connect+
- Durable fabric and rugged material
- JBL Bass Radiator
- Bluetooth® version: 4.2
- Support: A2DP V1.3, AVRCP V1.6
- Transducer: 50 x 90mm
- Rated power: 30W RMS
- Frequency response: 60Hz–20kHz
- Signal-to-noise ratio: >80dB
- Battery type: Lithium-ion Polymer 27Wh (Equivalent to 3.6V, 7500mAh)
- Battery charge time: 4 hours (5V/2.3A)
- Music playtime: up to 20 hours (varies by volume level and audio content)
- USB charge out: 5V/2A (maximum)
- Bluetooth® transmitter power: 0-20dBm
- Bluetooth® transmitter frequency range: 2.402 – 2.480GHz
- Bluetooth® transmitter modulation: GFSK, π/4 DQPSK, 8DPSK
- Dimension (W × D × H): 220 x 95 x 93mm
- Weight: 965g
JBL
JBL is featured in My New Microphone's Top 8 Best Portable Bluetooth Speaker Brands On The Market.
Back to the Full List Of Speaker Specifications.
Smart Speaker Device
The Sonos Move is an Alexa and Google Assistant-enable smart device.
Sonos Move Manual (Specifications Sheet)
- Features:
- Rechargeable battery lasts up to 10 hours. Easily recharge by just setting Move on the included charging base—no plugs or extra wires required. For power on the go, use a compatible USB-C charger.
- Weatherproof design is ideal for barbecues, pool parties, and more.
- Stream over WiFi at home—switch to Bluetooth anywhere else.
- Easy voice control with Amazon Alexa and the Google Assistant built right in.
- Compatible with all your other Sonos speakers for multi-room listening.
- Amplifier: Two Class-D digital amplifiers.
- Tweeter: One tweeter creates a crisp and accurate high frequency response.
- Mid-Woofer: One mid-woofer ensures the faithful playback of mid-range vocal frequencies plus deep, rich bass.
- Microphones:
- Far-field microphone array.
- Microphone LED, hard-wired to the voice microphones for extra privacy control so you’re always aware when the microphone is active.
- Voice Control: Integrated voice control.
- Wireless Connectivity: Connects to your home WiFi network with any router that supports 802.11b/g/n in 2.4GHz or 802.11a/n in 5GHz.
- Power Supply:
- Charging base:100-240VAC, ~50/60Hz, 1.2A. Output: 18.0VDC, 2.5A, 45.0W.
- USB port: USB type C PD power with 45W, 20V/2.25A.
- Battery pack:
- Capacity: 2420-2500maH
- Replacement: Visit our website www.sonos.com for more information.
- Disposal: Check with your local waste or recycling company to determine the proper disposal method in your area.
- Dimensions (H x W x D): 9.44 x 6.29 x 4.96 in (240 x 160 x 126 mm)
- Weight: 6.61 lb (3.0 kg) (including the battery)
- Operating Temperature: 32º to 113º F (0º to 45º C)
- Storage Temperature: -13º to 158º F (-25º to 70º C)
- Humidity Resistant: Move meets IP56 water and dust resistance levels. Just don’t leave it out in a soaking rainstorm.
- Product Finish: Black with black grille
- Package Contents: Sonos Move, charging base, and Quickstart guide.
Sonos
Sonos is featured in My New Microphone's Top 8 Best Portable Bluetooth Speaker Brands On The Market.
Back to the Full List Of Speaker Specifications.
Subwoofer
The Klipsch Reference R-100SW is a 10″ subwoofer with a digital amplifier.
Klipsch Reference R-100SW Specifications
- Features:
- Spun Copper IMG woofer
- All-digital amplifier
- Front-firing driver
- Low-pass crossover and phase control
- Line/LFE inputs
- MDF cabinet with scratch-resistant, textured wood grain vinyl
- Front-mounted LED power indicator
- Low profile grille
- Frequency Response: 32 Hz – 120Hz +/- 3dB
- Maximum Acoustic Output: 112 dB
- Amplifier: All-Digital
- Amplifier Power (Continuous/Peak): 150W/300W
- Amplifier Features: Volume, Low-pass, 0/180 phase, Auto Power On
- Driver Components: 10” high excursion spun-copper IMG woofer
- Enclosure Material: MDF
- Enclosure Type: Bass-Reflex via rear-firing port
- Inputs: Line level/LFE RCA jacks
- Height: 14.5” (368 mm)
- Width: 12.5” (318 mm)
- Depth: 16.4” (417 mm)
- Weight: 24 lbs (10.9 kg)
- Finishes:
- Black
- Textured Wood Grain
- Vinyl
- Built From: 2018
Klipsch
Klipsch is featured in My New Microphone's Top 11 Best Subwoofer Brands (Car, PA, Home & Studio).
Back to the Full List Of Speaker Specifications.
Tweeter Driver
The Dayton Audio AMT Mini-8 is a special air motion transformer tweeter (rather than a typical moving-coil dome tweeter.
Dayton AudioAMT Mini-8 Specifications
- Features:
- Advanced Air Motion Transformer design
- Folded Kapton ribbon diaphragm delivers clean, detailed, and highly dynamic output
- Miniature design can be mounted virtually anywhere
- Powerful, lightweight neodymium magnet structure for low distortion and high efficiency
- Speaker Series: AMT Series
- Model Number: AMT Mini-8
- Speaker Type: Tweeter
- Sensitivity: 88 dB @ 1W/1m
- RMS Power Handling: 15 watts
- Peak Power Handling: 30 watts
- Usable Frequency Range (Hz): 3,500 – 40,000 Hz
- Impedance: 8-Ohm
- Re: 7.92-Ohm
- Le: N/A
- Fs: N/A
- Qms: 1.86
- Qes: N/A
- Qts: 1.84
- Mms: N/A
- Cms: N/A
- Sd: 3.8 cm2
- Vd: N/A
- BL: N/A
- Vas: N/A
- VC Diameter: N/A
- Overall Outside Diameter: 40.5 mm
- Overall Depth: 23mm
- Color: Black
- List Price: $39.99
Back to the Full List Of Speaker Specifications.
Coaxial Full-Range Driver
The B&C 8CX21 is a full-range coaxial speaker with 2 individual drivers along the same axis.
Features:
- 400 W continuous program power capacity
- 100° nominal coverage
- 75 – 20000 Hz response
- 94 dB sensitivity
- 34.5 mm (1.35”) HF unit exit diameter
- XO-1 dedicated crossover network
Specifications:
- Nominal Diameter: 210mm (8.0 in)
- Nominal Impedance: 8 Ω
- Minimum Impedance LF: 6.1 Ω
- Minimum Impedance HF: 7.2 Ω
- Frequency Range: 75 – 20,000 Hz
- Dispersion Angle: 100°
- Woofer Cone Treatment: WP Waterproof Front Side
- Magnet Material: Ceramic
Specifications LF Unit:
- LF Sensitivity: 94.0 dB
- LF Nominal Power Handling: 200 W
- LF Continuous Power Handling: 400 W
- LF Voice Coil Diameter: 52mm (2.0 in)
- LF Winding Material: Copper
- LF Flux Density: 1.1 T
- Former Material: Kapton
- Winding Depth: 16.0mm (0.63 in)
- Magnetic Gap Depth: 8.0mm (0.31 in)
Specifications HF Unit:
- Sensitivity: 101.0 dB
- Nominal Power Handling: 25 W
- Continuous Power Handling: 50 W
- Voice Coil Diameter: 36mm (1.4 in)
- Winding Material: Aluminum
- Flux Density: 1.45 T
- Diaphragm Material: Polyester
- Recommended Crossover: 2.2 kHz
- Inductance: 0.14 mH
Parameters:
- Resonance Frequency: 74 Hz
- Re: 5.2 Ω
- Qes: 0.39
- Qms: 4.1
- Qts: 0.36
- Vas: 15.0 dm3 (0.55 ft3)
- Sd: 220.0 cm2 (34.1 in2)
- η₀: 1.5%
- Xmax: 5.0mm
- Xvar: 5.5mm
- Mms: 21.0 g
- Bl: 115 Txm
- Le: 1.2 mH
- EBP: 189 Hz
Mounting & Dimensions:
- Overall Diameter: 225 mm (8.8 in)
- Bolt Circle Diameter: 210 mm (8.3 in)
- Baffle Cutout Diameter: 187 mm (7.4 in)
- Depth: 135 mm (5.3 in)
- Flange and Gasket Thickness: 11 mm (0.4 in)
- Net Weight: 4.0 kg (8.8 lb)
- Shipping Units: 1
- Shipping Weight: 4.6 kg (10.14 lb)
- Shipping Box: 295x314x175 mm (11.61×12.36×6.89 in)
Crossover:
- Model: XO-1
- Filter Type: Two-way
- Nominal Impedance: 8.0 Ω
- Low-pass Slope: 12.0 dB/oct
- High-pass Slope: 12.0 dB/oct
- Overall Dimensions: 107×96 mm (4.2×3.8 in)
- Weight: 0.4 kg (0.9 lb)
Back to the Full List Of Speaker Specifications.
Mid-Range Driver
The Eminence Delta-10A is a 10″ 8Ω mid-range driver/woofer.
Eminence Delta-10A Specifications Sheet
Specifications:
- Nominal Basket Diameter: 10,0″, 254mm
- Nominal Impedance: 8 Ω
- Power Rating:
- Watts: 350 W
- Music Program: 700 W
- Resonance: 66 Hz
- Usable Frequency Range: 63 Hz – 3.7 kHz
- Sensitivity: 98.8 dB
- Magnet Weight: 56 oz.
- Gap Height: 0.375″, 9.5mm
- Voice Coil Diameter: 2.5″, 64mm
Thiele & Small Parameters:
- Fs: 66 Hz
- Re: 5.42 Ω
- Le: 0.74 mH
- Qms: 6.53
- Qes: 0.35
- Qts: 0.33
- Vas: 1.08 cu.ft., 30.50 liters
- Vd: 121.0 cc
- Cms: 0.18 mm/N
- BL: 14.40 T-M
- Mms: 32 g
- EBP: 189
- Xmax: 3.50 mm
- Sd: 344.9 cm2
- Xlim: 9.4 mm
Mounting Information:
- Recommended Enclosure Volume:
- Sealed: N/A
- Vented: 12.70–37.90 litres, 0.45–1.34 cu.ft.
- Driver Volume Displaced: 0.050 cu.ft., 1.42 litres
- Overall Diameter: 10.09’’, 256.3 mm
- Baffle Hole Diameter: 9.18’’, 233.2 mm
- Front Sealing Gasket: Yes
- Rear Sealing Gasket: Yes
- Mounting Holes Diameter: 0.25’’, 6.4 mm
- Mounting Holes B.C.D.: 9.66’’, 245.4 mm
- Depth: 4.25”, 108.0 mm
- Net Weight: 10.80 lbs , 4.90 kg
- Shipping Weight: 12.00 lbs , 5.44 kg
Materials Of Construction:
- Aluminum voice coil
- Polyimide former
- Ferrite magnet
- Vented core
- Pressed steel basket
- Paper cone
- Cloth cone edge
- Solid composition paper dust cap
Back to the Full List Of Speaker Specifications.
Woofer Driver
The Dayton Audio RS225-8 is an 8″ 8Ω woofer driver.
Dayton Audio RS225-8 Specifications
- Features:
- One of the lowest distortion, highest resolution driver series available
- Low-distortion high-excursion motor system with two short-circuit paths
- Compliant suspension and rigid black anodized aluminum cone for strong bass performance
- Heavy-duty 6-hole cast frame, low-loss rubber surround, and solid aluminum phase plug
- Speaker Series: Reference Series
- Model Number: RS225-8
- Speaker Type: Woofer
- Nominal Diameter: 8″
- Power Handling (RMS): 80 watts
- Power Handling (max): 160 watts
- Impedance: 8 ohms
- Sensitivity: 86.8 dB @ 2.83V/1m
- Frequency Response: 28 – 2,400 Hz
- Voice Coil Diameter: 38 mm
- DC Resistance (Re): 6.5 ohms
- Voice Coil Inductance (Le): 0.86 mH @ 1 kHz
- Resonant Frequency (Fs): 28.3 Hz
- Mechanical Q (Qms): 1.46
- Electromagnetic Q (Qes): 0.51
- Total Q (Qts): 0.38
- Diaphragm Mass Inc. Airload (Mms): 35.8g
- Mechanical Compliance of Suspension (Cms): 0.88 mm/N
- Surface Area Of Cone (Sd): 213.8 cm2
- Volume Of Displacement (Vd): 149.7 cm3
- BL Product (BL): 9.05 Tm
- Compliance Equivalent Volume (Vas): 56.8 litres
- Maximum Linear Excursion (Xmax): 7.0 mm
- Cone/Diaphragm Material: Black Anodized Aluminum Cone
- Surround Material: Rubber
- Voice Coil Wire Material: Copper
- Voice Coil Former: Aluminum
- Basket/Frame Material: Cast Aluminum
- Magnet Material: Ferrite
- Overall Outside Diameter: 223 mm
- Overall Depth: 89 mm
- Baffle Cutout Diameter: 184 mm
- # Mounting Holes: 6
- List Price: $74.99
- Color: Black
- Warranty – Parts & Labor: 5 Years
- Product Shipping Weight (lbs.): 6.1
- Optimum Cabinet Size:
- Sealed Volume: 0.44 ft.³
- Sealed F3: 66 Hz
- Vented Volume: 1.17 ft.³
- Vented F3: 38 Hz
Back to the Full List Of Speaker Specifications.
Electrostatic Speaker
The MartinLogan Classic ESL 9 is an electrostatic speaker.
MartinLogan Classic ESL 9 Manual
- System Frequency Response: 34–23,000 Hz ± 3db
- Recommended Amplifier Power: 50–400 watts per channel at 4 Ohms
- Dispersion:
- Horizontal: 30 Degrees
- Vertical: 44” (112 cm) line source
- Sensitivity: 90 dB/2.83 volts/meter
- Impedance: Nominal: 4 ohms, 0.8 ohms @ 20 kHz
- Crossover Frequency: 380 Hz
- High/Mid Frequency Driver: 44” x 9.2” (112 x 23.4 cm) CLS XStat electrostatic (405 in2/2,621 cm2)
- Woofers: 2x 8” (20.3cm) cast basket, high excursion, rigid aluminum cone with extended throw drive assembly, non-resonance asymmetrical chamber format.
- Components:
- Custom-wound audio transformer
- Air-core coils
- Low DCR steel laminate coils
- Polyester capacitors
- Signal Inputs: Custom 5-way bi-wire tool-less binding posts
- Power Draw Max: 2W per channel
- Standby: <1W per channel
- Weight: 78 lbs. each (35.4 kg)
- Size (H x W x D): 59.8” × 10.4” × 25.4” (152 × 26.4 × 64.6 cm)
Back to the Full List Of Speaker Specifications.
Planar Magnetic Speaker
The Magnepan 1.7i is a planar magnetic speaker.
- Description: 3-Way, Full-Range, Quasi-Ribbon
- Frequency Response: 40 – 24,000 Hz
- Sensitivity: 86 dB 2.83V/1m @ 500 Hz
- Impedance: 4-Ohm
- Dimensions: 19 x 65 x 2
- Trim options:
- (Wood) Natural or black solid oak, dark cherry.
- (Aluminum) Silver or black.
- Fabric options:
- Off-white
- Black
- Dark grey
Back to the Full List Of Speaker Specifications.
Speaker With AMT (Air Motion Transformer) Tweeter
The HEDD Audio Type20 is an active 3-way mid-field/near-field monitor with a 2″ woofer, 1.25″ midrange speaker and AMT tweeter.
Drivers:
- Woofer: 7” (182mm) Ultra Honeycomb Composite
- Voice coil Ø: 2” (50mm)
- Midrange: 1 x 4“ (120mm) Ultra Honeycomb Composite
- Voice coil Ø: 1.25“ (32mm)
- Tweeter: 1x HEDD AMT (HEDD Air Motion Transformer)
- Equiv. Diaphragm Ø: 2.2” (56mm)
Input connectors:
- Analog balanced/ unbalanced: XLR / RCA
- Digital/HEDD Bridge Options: AES67 Ravenna, Dante, AES3/EBU
General data:
- Amplification (ICEpower®): 3 x 300W
- Sensitivity: 218 mVrms (-11 dBu) / 90 dB SPL / 1m at 0 dB GAIN
- Input gain: -30dB … +6dB
- Maximum input level (balanced / unbalanced): 6Vrms (+17.8dBu, +17.6dBV) / 4.5Vrms (+15.3dBu, +13.0dBV)
- High Shelf EQ > 2kHz: ±4dB at 20kHz
- Low Shelf EQ < 200Hz: ±4dB at 50Hz
- Frequency response: 32Hz–50kHz
- Frequency response ± 1.5dB: 40Hz – 20kHz
- THD 90dB/1m > 100Hz: ≤0.5 %
- Max SPL sine wave 100Hz – 3kHz /1m: ≥110dB
- Max SPL peak per pair at 1m: ≥120dB
- Crossover frequency: 250Hz / 2.5kHz
- Input impedance (balanced / unbalanced): 10kΩ / 47kΩ
- Weight: 15kg
- Height x Width x Depth: 280mm x 358mm x 338mm
- Warranty: 2 years
HEDD Audio
HEDD Audio is featured in My New Microphone's Top 11 Best Studio Monitor Brands You Should Know And Use.
Back to the Full List Of Speaker Specifications.
Guitar Cabinet
The Orange PPC112 is a guitar cabinet with a 12″ 16Ω speaker driver.
- Features:
- 1″ x 12″ Closed-Back Design
- 18mm Birch Plywood Construction
- 2 x Parallel Jacks For Daisy-Chaining To Another 16-Ohm Cabinet (Total Impedance = 8 Ohms)
- Hard Wearing Woven Paper Grille Cloth
- Skid Runners
- Steel Hardware
- Power Handling: 60 Watts (Mono)
- Speakers: 1 x Celestion Vintage 30
- Impedance: 16-Ohm
- Dimensions (W x H x D): 55 x 45 x 29 cm (21.65 x 17.72 x 11.42″)
- Weight: 14.75 kg (32.52 lb)
Orange
Orange is featured in My New Microphone's Top 11 Best Guitar Amplifier Brands In The World.
Back to the Full List Of Speaker Specifications.
Wireless Speaker
The Rocketfish RF-WHTIB-A is not a speaker but a wireless RF speaker system (transmitter and receiver).
Wireless transmitter:
- Audio Input: Stereo, speaker-level
- Maximum audio input signal: 11 V RMS into 120 ohms
- Audio Output: Wireless Stereo, 16-bit, 48 kHz uncompressed
- Supply voltage: 5V
- Transmission Delay: 15-20 ms
Wireless receiver:
- Audio Input: Wireless Stereo, 16-bit, 48 kHz, uncompressed
- Signal-to-Noise Ratio: 87 dB
- Audio Output: High-Efficiency Class D, Speaker-level
- Speaker Impedance Support: 4 to 16-ohm speakers
- Audio output power: 2 × 30 W (RMS) into 4 ohms (no more than 10% THD)
- Transmission Delay: 15-20 ms
- Power Supply: AC 100-240 V ~ 50/60 Hz
Back to the Full List Of Speaker Specifications.
Choosing the right PA speakers for your applications and budget can be a challenging task. For this reason, I've created My New Microphone's Comprehensive PA Speaker Buyer's Guide. Check it out for help in determining your next PA speaker purchase.
With so many loudspeakers on the market, purchasing the best speaker(s) for your applications can be rather daunting. For this reason, I've created My New Microphone's Comprehensive Loudspeaker Buyer's Guide. Check it out for help in determining your next speaker acquisition.
Determining the perfect pair of studio monitors for your studio can make for a difficult choice. For this reason, I've created My New Microphone's Comprehensive Studio Monitor Buyer's Guide. Check it out for help choosing the best studio monitors for your setup.
Leave A Comment!
Have any thoughts, questions or concerns? I invite you to add them to the comment section at the bottom of the page! I'd love to hear your insights and inquiries and will do my best to add to the conversation. Thanks!
This article has been approved in accordance with the My New Microphone Editorial Policy.