X12 Subwoofer

Featured with dual Push Pull coupled long stroke 12” drivers in sealed enclosure.

Combining digital switch mode power section of 400 watt RMS, with M&K propietary analog “front-end” input stage, all designed for the legendary M&K Sound bass extension.

The M&K X12 subwoofer offer Ultra low distortion and the highest dynamic performance, as using “dual Push Pull coupled drivers” providing a total surface area most equivalent to a single 18” driver.

X12 is rewarded with “reference status” for music and movie production,and Home Theater applications.

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.

Specifications X12

Specifications for the X12 Subwoofer


Amplifier Power:400 Watts RMS / 700 Watts Peak
Frequency Response:20 – 200 Hz +/- 2 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
Phase:0-180 degrees, continuously variable
Volume control:Continuously variable / Fixed THX
Switchable LFE:Optional THX or MK EQ mode


Dimensions HxWxD:25,8 x 17,3 x 17,8” / 656 x 440 x 453 mm
Weight:79.3 lbs / 36 kg


Finish:Black satin


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More from the X Series


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.”

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?

Why Your system Needs an M&K Sound X Series Subwoofer

Above and beyond the obvious, simplistic answer: “more and better bass”, the combination of a well designed and conscientiously constructed subwoofer and main satellite speakers offers worthwhile performance advantages that improve overall system performance in many critical areas that are equally relevant for stereo and surround, for movie viewing and music listening

Here’s what happens when you physically separate reproduction of low frequency information from the upper and mid ranges. The most widely acknowledged beneft, of course, is improved deep bass extension, higher deep bass output levels and more control and authority, i.e., your system will play deeper, louder, cleaner, tighter bass.

With an M&K Sound X Series subwoofer, bass is exclusively reproduced by a speaker created and optimized for that purpose only. Removing the burden of deep bass from your main speakers provides major improvements in essential parameters such as midrange purity and accuracy. By liberating your main speakers from handling the tremendous demands of low bass, you also increase their effective power handling capabilities signifcantly, so that they can play louder without distortion.

Because your main amplifer no longer handles deep bass, the amount of power needed to achieve a given output level from your main speakers is greatly reduced (typically -50%). This ensures that your amp remains well within its safe operating limits with considerable overhead readily available as needed. Independent placement of subwoofer and satellites allows you to select an optimal position for each specifc frequency range. The spot that delivers best bass is almost never the one that also delivers best upper/mid performance. With no bass vibrations or internal bass pressure waves in your main speaker enclosures, resonances are eliminated for cleaner, clearer mid and high frequencies.

Since they no longer have to reproduce deep bass, your main speaker cabinets can be more compact with enhanced structural integrity for natural, uncolored sound and a narrow front that eliminates baffle diffraction distortion, resulting in more open, natural, three-dimensional sound.

No matter what some manufacturers may try to tell you, according to the immutable laws of physics: Big bass requires a big box.

Your Choice

Bass is so much more than explosive special effects, booming cannons in the 1812 Overture, the deafening roar of CGI monsters or even the most riveting, trouser-flapping, shake-your-booty dance beat.

It is the subtle, low-level ambient hum of a packed concert hall just before the first note is played. It is the soft, ominous rumble of thunder off in the distance.

It is all of these things and so much more. The bottom end of the audio spectrum is a crucial component in making the listening experience that much more real.

M&K Sound X Series subwoofers bring it all home to you.

Your final choice of X Series subwoofer model will naturally depend on many factors including room size, preferred listening levels, musical and cinematic tastes and, of course, exactly how dedicated you are to the quest for ultimate audio realism.

“M&K is the granddaddy of subwoofer manufacturers”
Stereophile Magazine

M&K Sound X Series Bass Drivers

The all-new X Series 8”, 10” and 12” woofers have been tailored specifcally to fulfll 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 signifcant 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.

SBR Suspension

The X Series half-roll suspension is designed to deliver extended longstroke cone motion with no mechanical losses within the driver’s linear excursion range. The surround is also designed to provide a high degree of damping of pressure build-up inside the cabinet in order to avoid collapse modes in the surround in the presence of large input voltage

Overhung Voice Coil on Titanium Former

The non-inductive Titanium voice coil formers effectively eliminate mechanical damping in the moving coil. Titanium formers offer key advantages, including mechanical rigidity and extreme thermal stability. The long coil diameter of 2” ensures long, linear cone motion and extraordinary power handling.

M&K Sound X Series Amplifcation and Controls

  • Classic M&K Sound analog input section for full-bodied bass with authority and weight
  • Class D digital switching power amplifer for fast, precise bass
  • Headroom Maximizer for strict control of peak excursions
  • No servo controls to cause degrading signal delays
  • Variable EQ, phase and crossover adjustments
  • Flexible Input/output options for use with M&K Sound active monitors with onboard flters
  • Unique throughput options allow you to assemble a complete THX setup, using the lowpass flter in the sub in conjunction with
    the highpass flter in the monitors, without external bass management from a processor/receiver.

The acclaimed bass impact of M&K Sound subwoofers is fully intact in the X Series with overall driver and cabinet tuning integrated with carefully adjusted flters for rock-solid bass all the way down to 20 Hz. This is a level of performance that is claimed by many, but delivered by only a select few.

To feed the driver clean, fast, effcient and ample power, a switch mode power module has been selected. Capable of delivering 400 Watts continuously and up to 600 Watts peak, the module keeps a firm grip on the specially designed drivers at even the highest output levels.

M&K Sound integrates woofer and amplifcation to achieve elegance and brute force in a high tech, low profile package that proves defnitively that fast, accurate bass and potent muscular bass need not be mutually exclusive.

Independent Evaluation

THX is a set of performance standards originally developed by Lucasfilm Ltd, the movie empire of Star Wars creator George Lucas, to lay out a set of criteria to ensure that the creations of cinematic artists are reproduced exactly as intended. The THX logo immediately became recognized as a seal of approval for quality-conscious cinema-goers around the world.

In 1991, M&K SOUND became one of the first manufacturers to join George Lucas and his Lucasfilm Home THX program for domestic installations.

Today, THX is the highest independent quality standard dedicated to the accurate reproduction of audio sources in the home. THX certification attests that the component has been thoroughly evaluated by a fully independent body and found to live up to the strictest quality requirements in the audio industry.

M&K SOUND X Series subwoofers meet and exceed THX specifications to deliver music and movies with natural, effortless realism and power.

Academy Award For Best Sound

Movies that won Academy Awards for Sound - All mixed and edited on M&K Sound speakers

The Incredibles
King Kong
Lord of the Rings
Pearl Harbor
Black Hawk Down
Star Wars - Episode I
Star Wars - Episode II
Star Wars - Episode III
Pirates of the Caribbean - The Curse of the Black Pearl