The S15 PRO is a compact active subwoofer designed especially for the M-Line systems. It is composed by a single 15” driver in a bassreflex configuration, powered by an 800 W Class-D amplifier. Its efficient design and compact size guarantees flexible placement in all kinds of environments. In addition, a two-point SE rigging system allows for safe and easy stacking.

The unit contains a newly designed 800 W Class-D power amplifier and is equipped with 24-bit/48 kHz DSP. By using the LCD screen and rotary encoder, users can control various system parameters such as delay, EQ, filters and more.

The built-in factory presets reduce setup times for existing M-Line systems in various configurations. This makes easy the setup of an end-fire or cardioid setup, by simply choosing one of the dedicated factory presets. Furthermore, custom configurations can be saved as user presets.


DSP on board

800 Watt

Quick release fasteners on the sides for stacking


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S15 PRO 6

Built-in power amplifier & DSP

Each S15 PRO subwoofer is equipped with an 800W class-D power amplifier with switching-mode power supply for minimum weight and maximum flexibility anywhere in the world. Additionally to that our 24bit/48kHz DSP processor provides signal filtering and ensures maximum driver protection.

S15 PRO 7

DSP Presets

Integrated presets help to quickly load different system setups to be used with various M-F3A and M-F3A Pro configurations. Setting up an end-fire or cardoid setup e.g. can be done by choosing dedicated factory presets.

S15 PRO 8

Integrated Rigging

S15 PRO subwoofers are equipped with two-point SE stacking system that compromises 2 pieces of slide & lock mechanisms to connect two stacked subwoofers to each other. The same system is used to connect optional M-F3A SF stacking frame. Additionally a M20 distance pole thread is available on the top.

S15 PRO 9

Cardioid subwoofer setups

Due to the intelligent stacking design, it is possible to operate our S15 PRO subwoofers as a cardioid setup without any problems.

S15 PRO 10

EASE® Ready

AFMG® EASE® and EASE® Focus 3 GLL are available for the whole M-F3A PRO family. This allows users to simulate and calculate various parameters such as audience coverage, SPL, frequency response, splay angles, delay times and more. Files are available in the Downloads section.

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S15 PRO 11
Frequency range (-3 dB) *: 41 Hz- 94 Hz
Frequency range (-10 dB) *: 33 Hz- 128 Hz
Coverage angles (-6 dB) [H x V]: Omnidirectional
Maximum Peak SPL **: 136 dB
System type: 1-way active system
Crossover frequency: -
Transducers: 1 x 15'' driver
Enclosure type: Vented box
Type: Single channel, class-D with SMPS
Output power: 800 W
Protection: Short-circuit, overheating, overcurrent
Connectors: Input signal: balanced XLR 3-pin female
Link output: balanced XLR 3-pin male
Power input: powerCON® 20A
Power link output: powerCON® 20A
Wiring: Pin N: Neutral
Pin L: Conductor
Pin E: Ground
Input sensitivity: 0 dBu
DSP: 48 kHz/24-bit with extended dynamics
Processing latency: 1.1 ms
Processing: Factory and user presets, directivity control, EQ, delay, phase inversion
User controls: Power: ON/OFF switch
DSP: display with digital encoder
Product dimensions [H x W x D] (Including rigging): 586 x 460 x 520 mm
Net weight: 32 kg
Packaging dimensions [H x W x D]: 673 x 510 x 600 mm
Total weight: 34.9 kg
Cabinet: 15 mm plywood
Cabinet finishing: Black or white polyurea coating
Grille: Powder coated perforated steel
Hardware: Two side handles embedded in cabinet
4 rubber feet and top slots for stacking
M20 pole thread
Stacking: Two-point SE Audiotechnik® stacking system
Splay angles: -
Stacking frame for M-F3A PRO: M-F3A SFi S15
Pole bar: SPS20
Flight case: M-F3A S15 PRO FC
Amplifier rain cover: P801DL RC
All product specifications are subject to change without prior notice. * Measured with MF3AP preset
** Measured with 12 dB Crest factor Pink Noise, half space


Ground Stack Frame

Stacking frame for ground stacking M-F3A PRO cabinets on either S15 PRO, SUB 112BR or SUB 210BP subwoofers, also available in white.

M20 Pole Support

SPS 20
M20 Pole Support to pole mount an M-F3A or M-F3A PRO on any subwoofer.

Subwoofer Flight Case (for 2 pcs.)

Flightcase for the S15 PRO

Detachable rain cover for S12 PRO & M-F3A FS

Amplifier rain cover