From the world leader in high-performance subwoofer design, the M Series SB-12 Deep Bass Powered Subwoofer is an M&K thoroughbred, giving you the audible superiority you expect from M&K, at a remarkably affordable price in an incredibly compact size.

The SB-12 all-discrete power amplifier design offers exceptional sonic quality and ample power at a conservative 250 watts of continuous output. The Super Fast Deep Bass Driver and exclusive M&K Headroom Maximizer™ ensures a potent, yet tightly controlled bottom end for all your listening needs.

Black or White

Black Metal or White Metal
15 x 15 x 17.25” – 38.1 x 38.1 x 43.8 cm

Frequency Response:
20 Hz – 200 Hz ±3dB

Low-Pass Filter:
40 Hz-200 Hz, continuously variable, or Bypass

Power Handling:
250 Watts RMS

45 lbs/20.4 kg

For precise fine-tuning of the critical transition between the subwoofer and the main speakers, SB-12 incorporates a phase control that is continuously variable between 0 and 180 degrees. To facilitate easy connection to ANY system, the SB-12 includes inputs and outputs for line level and speaker level signals. A convenient signal detection circuit automatically turns the subwoofer on when a signal is present and places it in standby after a period with no signal. The SB-12 delivers explosive home theater performance and possesses the articulation and clarity necessary for true musical enjoyment.



Compact, powered subwoofer that uses a special high-performance 12” Super Fast Deep Bass™ long-throw, magnetically shielded driver in a sealed Deep Bass enclosure design which delivers enhanced low frequency extension down to 20 Hz.

A continuously variable phase adjustment from 0-180 degrees allows for perfect integration of the subwoofer with any speaker system and listening room. Speaker level and line level connections are included for maximum set-up flexibility. An automatic On/Standby switching circuit activates the amplifier when a signal is detected and turns it off after a period with no signal. The all-discrete 250 Watt power amplifier circuit features exceptional deep bass power and sonics.

Thanks to M&K SOUND’s unique Headroom Maximizer™, the SB-12 achieves the most musical performance in its class with incredibly powerful and dynamic output.

Available in black satin finish with black metal mesh grille.