M&K Sound X12 THX Ultra2 Subwoofer


  • Powerful, deep, and taut bass response
  • Outstanding build quality
  • Sealed push-pull design


A Message from the Inventors of the Subwoofer

“Creating the next generation of M&K Sound subwoofers was not something we undertook lightly. With a long legacy of market-leading innovation to live up to, we are proud to present the M&K Sound X Series, built to bring new force, authority and clarity to the critical bottom octaves for the listening pleasure of serious music and movie lovers everywhere.”


M&K Sound calls the X12 the subwoofer, and I can’t disagree with them. I’m pretty smitten with the X12 and have thoroughly enjoyed my time with it. It goes deep for movies and is controlled and tuneful with music—everything you ask for in a subwoofer. This is one of the best subwoofers I’ve ever heard in my room.

David Vaughn – Sound & Vision April 2014

From the very beginning, M&K Sound has been the only speaker company to produce only satellite and subwoofer systems, the optimum configuration for film and music.

Thanks to our state of the art subwoofers and intelligently designed compact monitors, M&K Sound systems deliver all of the subtle nuances and bottom end impact the artists intended for you to experience.

And when it comes down to it, don’t we all need a little more bass in our lives?

This is THE subwoofer !

he X Series subwoofers follow the proven M&K Sound concept of front and bottom mounted dual drivers operating in push-pull in a sealed enclosure, introduced in 1988 in the legendary MX-1000 subwoofer and continually refined over the ensuing decades. The unusual front and bottom driver configuration is a clever, noninvasive way to reduce harmonic distortion.

X12 subwoofer: With dual 12” drive units, the X12 provides 226 sq. in of cone area to move and control air or 40% more surface area than the X10 and 126% more surface area than the X8, equivalent to a single 18” driver


Bass Drivers


The all-new X Series 8”, 10” and 12” woofers have been tailored specifically to fulfill M&K Sound’s ambitious performance requirements. They employ open baskets for free air circulation, resulting in minimal mechanical distortion by eliminating any captive compressed air mass behind the cone. Cast baskets also offer a very rigid connection to the cabinet and improved heat dissipation from the motor system for reduced power compression.

Introducing the Distortion Killers

The M&K Sound X Series implements aluminum AC shorting rings in the magnet system and aluminum pole spacers above the pole piece. These devices make a significant contribution to the X Series subwoofers’ ability to render extraordinary fine dynamic bass detail with high precision at all levels as the drivers maintain full control and respond instantaneously to the incoming signal, for unparalleled accuracy and authority in the bottom octaves.

Amplifier Power:
400 Watts RMS / 700 Watts Peak

Frequency Response:
20 – 200 Hz +/- 3 dB

Total Harmonic Distortion:
< 0.5%, 400 Watts, 4 Ohm

AC Power Consumption:
0.5W standby, 60W average, 500W max

AC Line Voltage:
100-230 VAC 50/60 Hz 5A

LFE Input:
L/R Line level RCA & L/R XLR balanced

LFE Passthrough Output:
L/R Line level RCA & L/R XLR balanced

Switchable Lowpass Filters:
Fixed 80 Hz / Variable / No lowpass

0-180 degrees, continuously variable

Switchable LFE:
Optional THX or MK EQ mode

Dimensions WxHxD:
44 x 66 x 46 cm / 17.3 x 26 x 18.1 Inch

36 kg / 79.3 lbs

150 Series Brochure Cover

Read about the whole series in the X series brochure.


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