B 15A

Multipurpose | Low Distortion | Easy Handling

B 15A is our new multi-purpose active subwoofer model designed to serve a wide variety of applications.

It features a punchy 15″ speaker, either in an active (B 15A) or passive built (B 15).

This active version is equipped with an 800 Watt class-D amp with integrated DSP crossover.


B 15A

Port design

Aerodynamic port design reduces distortion and airflow noise. The unique asymmetric shape reduces port noise drastically by (-35 dB).
B 15A

Octopus feet

The so called “octopus feet” are made from some flexible rubber/plastic material, which provides good slip resistance.

Cardioid subwoofer setups

Due to the intelligent stacking design and the front* and rear sockets, it is possible to operate our B-Line subwoofers as a cardioid setup without any problems.


* B 15A and B 15A W do not have any front sockets.
B 15A


Model:B 15A / B 15A W
Type Bass-Reflex, Subwoofer, active
Transducers: 1x 15" SE-Audiotechnik woofer (3" Voice Coil), neodymium magnet, paper cone
Coverage *: Omnidirectional
Low frequency SPL Limit (-3dB): 36 Hz
Sensitivity SPL *: 98 dB
Max SPL (@1m) **: 136 dB peak
Power rating (RMS / Program / Peak ***): 400W RMS / 800 W Music
Amplifier: 800 W class-D with DSP
Audio Connectors: XLR 3-pin female line-level input, XLR 3-pin male signal link
Power Connectors: Neutrik PowerCon® type A power input, type B power link (max: 15A, max 4 pcs per line)
Cabinet: 15 mm plywood, black or white polyurea coating
Dimensions (WxHxD): 465 x 520 x 654 mm
Weight (kg): 34 kg

* Half-space (1 W / 1 m)
** max. SPL peak = Sensitivity + 10 x log10 (RMS Power) + 12 dB crest factor
*** Peak Power = Average Power + 6 dB crest factor

- All product specifications are subject to change without prior notice. -


B 15A

B 15 Dollyboard

Dollyboard for B 15 and B 15A subwoofer

B 15 Dollyboard

B 15A

M-F3A SPS 20

M20 Pole support to mount M-F3A PRO (or M-F3A) on top of our subwoofers.

M-F3A SPS 20


Engineering Data Sheet


EU declaration of conformity - Active Loudspeakers

EU declaration of conformity - Rigging and Accessories