● High power handling and low distortion 21” subwoofer ● Exclusive Malt Cross® Technology Cooling System ● Low power compression losses ● High sensitivity: 98 dB (1W / 1m) ● Waterproof cone with treatment for both sides

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MALT Cross
In Beyma we face the problem of heat dissipation with a clear goal in mind: the speaker must deliver the best performance in the system in a consistent and reliable way, maximizing the total SPL and keeping it stable.

It is well known how the overall SPL of a system suffers a drop after some time working due to the power compression effect in the speakers. It is also known that normally the bigger the voice coil diameter the higher the power capacity, but this also means bigger motor structures to obtain high total output from the transducer.

The Maltcross cooling technology that we deliver to the Professional Audio market through our speakers, bring together several solutions to meet our goal; in one side allows the woofer to handle bigger rates of power with a given coil diameter, so we can think in smaller coil designs with smaller motor structure, reducing the weight but increasing the sensitivity and also keeping an adequate power handling figure for a target application, maintaining a total SPL finally that may be equivalent to a bigger size motor structure driver.

The Matcross technology is a forced convection circuit inside the heart of the driver that helps to lower the working temperature of the coil and also acts like a demodulation ring, linearizing the inductance of the transducer.

Nominal impedance 8 Ohm
Power capacity 1600 W AES
Nominal diameter 540 mm 21 in
Sensitivity 98 dB 1 W @ 1 m @ ZN
Minimum impedance 7.2 ohm
Frequency range 30-1000 Hz
Program power 3200 W
Recommended enclosure volume 150 l
Voice coil diameter 101.6 mm 4 in
BL factor 36.6 N/A
Moving mass 0.393 kg
Winding length 34.5 mm
Air gap height 14 mm
Xdamage pp 65 mm
Fs 30 Hz
Re 5.4 ohm
Qms 8.6
Qes 0.30
Qts 0.29
Vas 305 l
Cms 72 µm / N
Rms 8.6 kg/s
Efficiency % 2.7
Sd 0.1734 m²
Xmax 14 mm
Vd 2428 cm³
Le @1 kHz 4.7 mH
Depth 268 mm 10.6 in
Net weight 11.8 kg 26.01 lb
Total weight 14.3 kg 31.5 lb
Magnet Neodymium
POWER (W AES) 1600
SEN. (dB 2.83V-1m) 98
COIL DIAM. (in) 4

Specifications PDF


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