M&K Sound X10+ Subwoofer
The X10+ delivers fast, deeply controlled bass with the rare ability to disappear into a system. Its sealed dual-driver design brings explosive dynamics, weight, and clean transient definition, while flexible THX, LFE, RCA, and XLR options suit serious music and cinema setups. Neil Gader found its sub/satellite integration exceptionally seamless and transparent.
WATT RECOMMENDS
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Deliciously Crispy
Bass
92/100
Integration
95/100
Dynamics
94/100
Build Quality
94/100
Features Usability
87/100
Value for Money
85/100
Pros
Exceptionally seamless integration, with no audible subwoofer localization, response gaps, or bass humps clouding the lower octaves.
Delivers fast, weighty, highly resolved bass with strong transient control and wide-ranging dynamics.
Well-equipped for two-channel and home-theater use, with THX certification, adjustable crossover options, and RCA/XLR connectivity.
Cons
Its tightly controlled, cooler presentation may not suit listeners seeking a warmer, more romantic sonic character.
Achieving its best performance in a single-sub setup may require careful placement to address room peaks and nulls.
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What Reviewers Are Saying
Assessments of Build Quality, Usability, and Overall Propositions.
Bass
92/100
The review describes a controlled, well-timed sealed alignment with substantial foundational weight, speed, and resolution. In the S150/X10 system, the reviewer heard no subwoofer localization, frequency-response holes, or mid/upper-bass humps clouding the lower octaves.
Integration
95/100
Integration is a standout: the reviewer reports "no subwoofer localization," "zero holes in frequency response," and no bass humps that obscure transparency. The X10 is described as sharing the main speakers' control and timing, producing a notably coherent handoff rather than drawing attention to itself.
Dynamics
94/100
The review's first sonic impressions include "high-impact dynamics," speed, and foundational weight. It also credits the S150/X10 combination with wide-ranging dynamics and clearly defined transient information, including piano sustain and decay.
Build Quality
94/100
Construction receives unusually strong praise: the MDF cabinet is described as heavily braced, exceptionally inert, and "tight as a drum." The reviewer found the finish impeccable and heard virtually no enclosure resonance in a knuckle-rap test.
Features Usability
87/100
The X10 provides flexible RCA and XLR line-level connections, switchable LFE operation, and optional THX or M&K EQ modes. Its THX certification and cinema-oriented settings should make it a practical fit for both two-channel and home-theater systems, although the review offers little detail on day-to-day adjustment ergonomics.
Value for Money
85/100
The review places the complete S150/X10 system at about $8,000 plus stands and calls that package attainable for most buyers. It does not compare the X10 directly with competing subwoofers or less expensive alternatives, so there is limited evidence on its standing against peers at its own price.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
YouTube Reviews
Forum Mentions
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Specifications
- Frequency Response
- 20-200 Hz (Average Response in Room +/- 3 dB)
- Frequency Roll Off – THX EQ
- 20 Hz (-6 dB 20 Hz Nearfield)
- Frequency Roll Off – Anechoic EQ
- 20 Hz (-6 dB 20 Hz Nearfield)
- Variable Low Pass Filter
- 40-125 Hz Continuesly Variable / 4th Order
- Loss Pass Filter Bypass
- 40-200 Hz No Low Pass
- Fixed 80 Hz Filter
- Yes (Equivalent to THX 80Hz Ref Low Pass)
- Phase Control
- 0 – 180 deg Continuesly Variable
- Line level input/output
- 2 x RCA phono Left / Right – input / output
- Line level input/output
- 2 x XLR Left / Right – Input / output
- Amplifier type
- Analog input / switch mode power output
- Drive unit
- 2 x 10” Extra Long Throw
- System Principle
- Push Pull Sealed enclosure
- Amplifier Power output RMS
- 500 watt 0.5% THD at 300W into 4 ohms
- Amplifier Power output Peak
- 1000 watt
- Standby Power Consumption
- 0.5 watt 100W Average, 600W Max
- Headroom Limiter Maximizer
- Yes (Dynamic driver excursion control)
- Auto Power detect on/off
- Yes
- Finish
- Satin Black
- Dimensions
- H x W x D 25.5 x 15.7 x 13.4 in / 64.7 x 40.0 x 34.0 cm
- Weight
- Netto 88.4 lbs / 40.1 kg
- Manual
- No
- Manual
- Yes Gloves, US/EU Power cords, Rubber Feet
Manufacturer's Description — M&K Sound
The most advanced subwoofers technologies for the future
New Carbon Fibre Woofer Cones have been developed for all models with ultra-high strength and rigidity to accommodate the added power and excursion of the new X Series. M&K Sound’s proprietary CNC-machined, extruded aluminium Distortion Killer Shorting Rings also guarantee absolute control and distortion-free, exemplary performance in all settings.
M&K Sound’s iconic Push-Pull subwoofer architecture and “reversed double driver” non-isobaric configuration mean that both drivers in the cabinet are ‘exposed’ to room air. Consequently, and like the X-Series before, the X Series models are effectively two subwoofers in one cabinet enabling a further associated reduction in distortion. This is made possible by having one inverted driver in relation to the other cancelling non-linearities to produce totally symmetric waveforms.
The X15, X12 and X10 all feature full 25mm MDF construction and bracing for negligible panel vibrations or cabinet resonances, and increased venting at the base of the woofers mitigates distortion due to air turbulence. These milled cavities also act as convenient carrying handles for installation efficiency
Cosmetic makeovers for the X Series arrive in the form of recessed front baffles and convenient invisible magnetic grille attachment mechanisms. Harmonizing with the bold but Scandi-cool looks of the M&K S150 and S300 speakers, the new subwoofers offer cleaner lines and more discreet curved edges to complement living spaces or dedicated home cinema rooms
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.”
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.
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.
Verified Dealers
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Authorized dealers for M&K Sound X10+ Subwoofer
- American Recorder — online and in-store — Simi Valley, California, United States (website)
- AUDIO 2000 — in-store — Wuppertal, Nordrhein-Westfalen, Germany (website)
- Audio Venue — online and in-store — London, England, United Kingdom (website)
- Audiolab Stereo & Video — online and in-store — Morrisville, Pennsylvania, United States (website)
- AudioPerformance — online and in-store — Stenkullen, Västra Götalands län, Sweden (website)
- AUTOMATED ENTERTAINMENT INC. — online and in-store — Vaughan, Ontario, Canada (website)
- Dubai Audio — online and in-store — Al Wasl, Dubai, United Arab Emirates (website)
- Elecson KLS — online and in-store — Paris, Île-de-France, France (website)
- Fidelity Acker & Buck — in-store — Rellingen, Schleswig-Holstein, Germany (website)
- Grahams Hi-Fi — in-store — London, England, United Kingdom (website)
and 12 more verified dealers