Flagship THX Dominus Subwoofer for the Largest Home Cinemas
The M&K Sound X15+ Flagship Dual 15" Subwoofer delivers immense low-frequency output with the accuracy and control required for reference-level cinema and music systems. Its dual 15-inch extra-long-throw drivers operate in M&K Sound’s signature push-pull configuration, helping reduce harmonic distortion while producing powerful bass that extends down to a published 16Hz in-room response.
A Danish-built ICEpower Class D amplifier supplies 700 watts RMS and 1,400 watts peak output. With THX Certified Dominus performance for rooms up to approximately 6,500 cubic feet, the X15+ is designed for expansive private cinemas, large media rooms, premium listening spaces, and installations that demand deep, clean bass at high playback levels.
Highlights & Benefits
THX Certified Dominus — Engineered to deliver reference-level performance in home theaters up to approximately 6,500 cubic feet.
Dual 15" Long-Throw Drivers — Provides the displacement required for deep bass, substantial output, and powerful cinematic impact.
Push-Pull Configuration — Mechanically opposing drivers help cancel distortion and improve low-frequency accuracy.
1,400-Watt Peak Amplifier — High-efficiency Class D amplification supplies exceptional power and dynamic headroom.
16Hz In-Room Extension — Reproduces deep soundtrack effects and musical information that can be felt as well as heard.
Flexible System Integration — RCA and balanced XLR inputs and outputs support receivers, processors, preamplifiers, and multiple-subwoofer systems.
Technology & Design
Push-Pull Driver Architecture — One 15-inch driver faces forward while the second is mounted in an opposing orientation. Their mechanically opposite movement helps cancel nonlinear distortion and increases usable output.
Carbon-Fiber Driver Construction — The extra-long-throw woofers use rigid, lightweight carbon-fiber cones with a foam inner layer to support high excursion while maintaining speed and control.
Sealed Cabinet Design — The heavily reinforced sealed enclosure supports fast transient response and controlled low-frequency roll-off without port noise.
ICEpower Class D Amplification — The onboard amplifier delivers 700 watts RMS and up to 1,400 watts peak while maintaining high efficiency and substantial dynamic reserves.
Adjustable Bass Management — Selectable THX and M&K EQ modes, fixed or variable crossover settings, crossover bypass, adjustable level, and continuously variable phase simplify integration with a wide range of systems.
FAQ — M&K Sound X15+
What does THX Certified Dominus mean?
THX Certified Dominus is designed for reference-level playback in very large home cinemas. M&K Sound specifies the X15+ for rooms up to approximately 6,500 cubic feet with viewing distances reaching about 20 feet.
Does the X15+ use two active 15-inch drivers?
Yes. The X15+ uses two powered 15-inch extra-long-throw drivers operating in a push-pull configuration. It does not use a passive radiator.
Can the X15+ connect to a balanced AV processor?
Yes. Balanced XLR inputs and outputs are provided along with unbalanced RCA connections, allowing integration with both consumer and professional-grade components.
Does the X15+ include built-in room correction or app control?
No. Setup is performed using the rear-panel level, phase, crossover, EQ, and power controls. Room correction may be applied through a compatible AV receiver, processor, or external calibration system.
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