B 15

B 15 is one of our new multi-purpose subwoofer models 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).

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


B 15

Port design

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

Sockets at front grill

Convenient multiple Neutrik speakON® sockets in front* and back allows for easy set up ideal for live performances.
* B 15A and B 15A W do not have any front sockets.
B 15
B 15

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 15


Model:B 15 / B 15W
Frequency range (-3 dB)* 39 Hz - 130 Hz
Frequency range (-10 dB)* 33 Hz - 160 Hz
Coverage (-6dB) [H x V] Omnidirectional
Nominal Impedance: 8 Ω
Sensitivity** 98 dB
Peak Power 1600 W
Continuous Power*** 400 W
Maximum Peak SPL**** 136 dB
System Type 1-Way Passive System
Transducers 1 x 15" Driver
Enclosure Vented Box
Connectors Input Signal: 2 x Neutrik SeakON® NL4
Link Input: 2 x Neutrik SpeakON® NL4
Link Output: 1 x Neutrik SpeakON® NL4
Wiring Pins 1+/1- : Driver
Pins 2+/2- : Link (Output CH 2, pins 1+/1-)
Product Dimensions [H x W x D] (Including Rigging) 514 x 494 x 650 mm
Net Weight 30 kg
Packaging Dimensions [H x W x D] 613 x 550 x 733 mm
Total Weight 33.1 kg
Cabinet 15 - 18 mm Plywood
Cabinet finishing Black or White Polyurea Coating
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

* Half space, 1W / 1m, on axis
** Half space, 1W / 1m, on axis
*** According to EIA-426B Standard (based on RMS Voltage)
**** Max peak SPL = Sensitivity + 10log10(Continuous Power) + 12 dB Crest factor

All product specifications are subject to change without prior notice.


B 15

B 15 Dollyboard

Dollyboard for B 15 and B 15A subwoofer

B 15 Dollyboard

B 15

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 - Passive Loudspeakers

EU declaration of conformity - Rigging and Accessories