M&K Sound IW150 In-Wall Speaker (ea)


Impedance 4 ohm
Recommended Amplifier Power: 25-400W
Bass/Midrange: 2 x 5.25” Polypropylene
High Frequency Driver: 3 x 1” Soft fabric dome
Frequency Response: 80 Hz – 20 kHz, ±3dB
Sensitivity: 90 dB, 2.83V/1m
Grille Dimensions (HxW): 14.17 x 12.51”, 360 x 318 mm
Baffle Dimensions (HxW): 13.93 x 12.24”, 354 x 311 mm
Wall Cutout (HxW): 13.03 x 11.33”, 331 x 288 mm
Mounting Depth: 3.74”, 95 mm
Weight: 18.8 lbs / 8,5 kg
Grill Finish: White metal, paintable


This award winning design is the In-Wall equivalent of M&K Sound’s S150 Series used on a daily basis as the preferred monitoring tool in hundreds of professional film and music recording studios around the world and in thousands of serious home entertainment systems.

Can there be any better choice than the speakers on which your favorite movies and music were actually created?

“It doesn’t take many seconds to discover that this is very groovy and, above all, serious.”
-Hemmabio (Home Cinema) Magazine, Sweden, May, 2016

M&K Sound IW Series

Frameless Architectural In-Wall Loudspeakers

The M&K Sound In-Wall Loudspeaker
The M&K Sound Frameless Architectural In-Wall loudspeaker range consists of open baf e designs as well as sealed box versions of the brand’s popular satellite and on-wall models to provide wide exibility in terms of applications and acoustic preferences. The series maintains the sonic integrity that has made M&K Sound a legend for over four decades.

Unlike other In-Wall makers, M&K Sound employs the exact same drivers and crossover technologies found in our acclaimed professional and consumer reference monitors to deliver consistent sound coverage throughout the room for superior imaging in stereo and surround, even when the speakers are tted in the ceiling.

M&K Sound drive units represent the culmination of decades of intensely focused transducer innovation.

Timbre Matching

The ambitious goal of the latest M&K Sound Architectural In-Wall range has been to counterbalance the inevitable acoustic consequences of reducing internal volume to 20 – 30% of a normal cabinet, while preserving the celebrated neutrality, realism and musicality that are the signature of M&K Sound. This level of tonal consistency and timbre matching offers unique exibility and the opportunity to mix and match speakers from across the entire M&K Sound line-up.

M&K Sealed In-Wall Boxes
The materials, acoustic properties, assembly and volume of every M&K Sound sealed box are all known factors during system design, so that the construction of the wall, the type of materials inside the wall and the volume of air behind the speaker all have no impact on nal performance. It is this extreme level of control over the interaction of speaker and wall that makes it possible for M&K Sound to offer designer-friendly, invisible installation at no sacri ce in ultimate performance.

M&K Sound back boxes of 18mm MDF are painted with black structure polyurethane lacquer for moisture resistant sealed surfaces. The sealed box also provides effective protection against dust, insects and vermin. Damping pads on the rear panel eliminate vibration when in direct contact with the wall in shallow installations. All mounting hardware is pre- tted to the box, including metal clamps to x speaker wire in the pre-cut cable groove on the rear of the box. Gold- plated push-on terminals with +/- polarity markings allow easy cable connection without the use of tools. Torx mounting screws with special washers are used for smooth mounting along with a practical, ef cient, self-tightening dog ear clamp system for a perfect seal between baf e and wall.

Invisible, Immersive and In the Right Place

Ever more complex surround formats such as Dolby Atmos, DTS X and Auro create an increasing need for high performance, yet concealed loudspeakers to handle installations incorporating 9 – 11 channels and beyond with discretion and style.

To deliver full-bodied performance from shallow, sealed enclosures, M&K Sound begins with the identical drivers used in our original satellite models and extensively modi es the crossover design to compensate precisely for the reduced internal volume bringing In-Wall response much closer to the frequency response of the original loudspeakers. Further revisions take into account practical considerations such as service access and, most critically, ensure easy, fast, accurate and safe installation.

Simply mark the intended placement using the cut-out template enclosed with the speaker, prepare the opening, attach speaker wire, drop in the box, tighten screws and t the front grille. Then, get ready to be blown away.

Every new M&K Sound In-Wall speaker is designed to be as universal as possible, whether used in In-Wall and/or In-Ceiling applications.

The range is fully compatible with all current and future sound formats, including Dolby Atmos, DTS X and Auro.

The Choice of Professionals®

The world’s most eminent musicians, singers, producers, directors and engineers working in hundreds of lm, music, broadcast and postproduction studios worldwide, choose M&K Sound loudspeakers.

Every day they make hundreds of artistic decisions based upon what they hear on their speakers. The trust they have in M&K Sound allows them to work quickly and effectively as they create the most breathtaking lm soundtracks and music ever recorded.

M&K Sound are used by the world’s nest lmmakers, including:

Additional information

Weight 9 kg
Dimensions 40 x 35 x 30 cm


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