SE-Audiotechnik – B 15A – Active Subwoofer


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.

SKU: B 15A Categories: ,


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

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.

Additional information



Frequency Range (-3 dB)* 39 Hz – 87Hz
Frequency Range (-10 dB)* 33 Hz – 113 Hz
Coverage (-6dB) [H x V] Omnidirectional
Maximum Peak SPL** 136 dB
System Type 1-Way Active System
Transducers 1 x 15″ Driver
Enclosure Type Vented Box


Type Single Channel
Class-D with SMPS
Output Power 800 W
Protection Short Circuit
Connectors Input Signal: Balanced XLR 3-Pin Female
Link Output: Balanced XLR 3-Pin Male
Power Input: PowerCON® 20A
Power Link Output: OowerCON® 20A
Wiring Pin 1: Ground
Pin 2: Positive
Pin 3: Negative
Input Sensitivity +14 dBu (3.88 V)
+4 dBu (1.23 V)
0 dBu (0.775 V) 0 dBV (1 V) -10 dBV (0.316 V)
DSP 48 kHz/24-bit with Extended Dynamics
Processing Latency: 1.1 ms
Processing Factory and User Presets
Directivity Control
Phase Inversion
Input Sensitivity
User Controls Power: On/Off Switch
DSP: Display with Digital Encoder


Product Dimensions [H x W x D] (Including Rigging) 520 x 495 x 654 mm
Net Weight 34 kg
Packaging Dimensions [H x W x D] 613 x 550 x 733 mm
Total Weight 37.1 kg
Cabinet 15 – 18 mm Plywood
Cabinet Finishing Black or White Polyurea Coating
Grille Powder Coated Perforated Steel
Hardware 2 SE Audiotechnik® Ergonomic Handles
4 Rubber Feet and Top Slots for Stacking
M20 Pole Thread
Stacking Two-Point SE Audiotechnik® Stacking System


Stacking Frame for M-F3A PRO B15 SFi M
Stacking Frame for L35 B15 SFi L35
Pole Bar SPS20
Flight Case B15 FC
Transport Dolly B15 TD
Transport Cover B15 TC
Amplifier Rain Cover P801DL RC


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