Some Beyma components of my cabinet do not work. What should I do?

Please contact your authorized distributor immediately.

If you need to purchase replacement parts or repair an OEM product, contact the manufacturer directly.

Acustica Beyma cannot supply information of its components used in OEM manufacturers.

Can I repair my Beyma components by myself?

Yes, you must purchase the recone kit or diaphragm replacement, contacting your distributor. You will find detailed instructions here:

In case of coaxials you can find the diaphragm references  (high and low frequency) in the technical data of each product.

Can I buy Beyma speakers directly?

Beyma has authorized distributors in more than 70 countries with knowledge and stock to give a great service. If you consider your project has high technical complexity and size, and you need our advice do not hesitate to write to oem@beyma.com

I am interested in an OEM project, How to contact?

Please write to oem@beyma.com explaining what is your project and we will respond as soon as possible

How we define power capability in our products?

The power data of our technical data sheets is defined by the standard AES2-1984 (rev 2003), AES Standard for acoustics – Methods of measuring and specifying the performance of loudspeakers for professional applications – Drive Units. The testing process as follows:

The speaker is mounted in free air (without enclosure). In case of compression drivers, the recommended horn is used.

A continuous pink noise signal is applied, filtered (f – 10 • f) with a 12dB/Oct slope and a crest factor of 6dB. This test will be 2 hours.

The applied power is calculated with the expression WAES = V2 / Zmin, where V is the RMS voltage applied to the speaker, Zmin is the minimum impedance (indicated in the data sheet)

The power indicated in the catalog ensures that the loudspeaker will not suffer any irreversible change in its properties.

In the case of RMS power, we will follow the expression WAES = V2 / Znom, where Znom is the nominal impedance 8 Ω, 16 Ω, 4 Ω.

How does Beyma calculate the Xmáx?

The Xmax is calculated as (Lvc – Hag)/2 + (Hag/3,5), where Lvc is the voice coil length and Hag is the air gap height. This value indicates, as a guideline, the linear excursion capability of a speaker.

What are power compression losses?

The value of the electrical resistance of a loudspeaker (Re) depends directly on the temperature. Due to continued use of the loudspeaker, the value of Re increases drastically after a period of time. This leads to a decrease in the speakers efficiency (less SPL than at the beginning).

To minimize this effect Beyma, throughout its history, has developed different technologies to cool the voice coil.

What is the EBP (Efficiency Band Pass)?

This term relates the loudspeaker resonance frequency with the electrical loss factor EBP = fs / Qes

In the design of cabinets, this value is used as a starting point to determine the type of enclosure to be used. For example, a typical EBP for Bass Reflex box is usually around 100, and for sealed box, around 50.

Difference between Sensitivity and Efficiency

Sensitivity is a parameter defined from the receiver’s point of view. Indicates the average value of the sound pressure level in the frequency range of the speaker at a certain distance (1m) with a fixed electrical power (1W), expressed in decibels (dB). Efficiency is a parameter designed to characterize the ratio between input and output energy in a transducer. This is the relationship between electric watts delivered to the source and acoustics watts produced by the source. Both magnitudes are closely related. Generally, a high sensitivity speaker will have a higher efficiency value.

Does Beyma offer design services for custom cabinets and passive filters?

We do not offer custom design of enclosures and other components. You can find recommendations here


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