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M&K S150 MKII Satin Black Right/C Speaker (Single)


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Condition: New

Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Limited 5-10 year warranty.  More info

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M&K Sound 150 family of loudspeakers currently in use around the world in countless professional and domestic installations is the product of decades of evolutionary development that have made M&K Sound one of the most respected names in pro and consumer audio. Deceptively small, every M&K Sound 150 loudspeaker system offers seriously big sound in a surprisingly compact package.

S150 MKII THX Ultra2 Monitor - The Next Level

What this updated version of the legendary studio monitor does in the conveyance of exactly what is there in the recorded source, no more and no less, is difficult to formulate in just a few words. Essentially, it does pretty much nothing, except open up a wide, clean, clear window on every aspect of recorded sound, allowing you to shift your personal focus as you choose between specific details, instruments or voices, while never losing sight of the totality of the overall musical experience.

With no additive or subtractive effects, it maintains the full integrity of the source, making it possible to listen with uncanny precision into the recorded event, to experience the intricate interplay of performers, the subtle tonal shadings and timbral nuances that bring you to the emotional core of the performance.

Questions of greater suitability for music or movies or for specific genres fall away, as these speakers simply lay out the unveiled, uncoloured truth of any source with a scintillating realism and naturalness. Extraordinary dynamic capabilities, effortless presentation of complex rhythms, linear frequency response and temporal integrity make the M&K Sound S150 MKII THX Ultra2 a true joy to listen to for serious sessions or just for pure pleasure.

M&K Sound Pro Tweeter

M&K Sound Pro Tweeter

The M&K Pro tweeter takes a radically different approach that allows useable output at a much lower crossover point at no sacrifice in the resolution of finest high frequency micro-details. Developed initially for the market leading self powered MPS 2510P and MPS 1611P professional studio monitors, the custom designed M&K Sound high frequency drive unit applies classic M&K Sound innovation and attention to detail to eliminate high frequency smearing and phase/combing anomalies. The result is a breakthrough level of high frequency resolution and ease of listening worthy of the M&K Sound brand name.

Base Power & Midrange

Base Power & Midrange

The exclusive, custom designed M&K Sound 5.25” bass/midrange drive unit represents the culmination of over three decades of intensely focused transducer design. While most loudspeaker manufacturers make specious boasts that their drivers are “heavily modified to their specifications,” the drivers used in the M&K Sound 150 range are in fact designed in-house by full time engineers that have been instrumental in the design of M&K Sound transducers for more than two decades. The dual 5.25” 150 woofer configuration employs a pin-cushion basket design with narrow basket flange to permit close placement of two woofers on a compact baffle.

THX Ultra2

THX Ultra2

In 1991, M&K SOUND became one of the first manufacturers to join George Lucas and his Lucasfilm Home THX program. The original THX program was created to ensure that movie theatres meet strict quality standards. The THX logo immediately became recognised as a seal of approval for quality-conscious cinema-goers around the world. Today, THX Ultra2 is the highest independent quality standard dedicated to the accurate reproduction of audio in the home. The M&K S150 meet or exceed strict THX Ultra2 specifications to deliver music and movies with natural, effortless realism and power.

Expert Tips

What is this foam on my speaker?
The acoustic foam attached to the front baffle should not be removed, it is a critical part of your loudspeaker system and plays an important role in its high level of performance. It focuses the radiation of the tweeters, minimises cabinet diffraction, and provides the flattest possible frequency response.

Which speaker is the Left speaker / Right/C?
The left speaker (pictured) has the two 5.25” bass/midrange drive units on the left. The Right/C has them on the right. You should use one Left speaker and two Right/C speakers.

This is the loudspeaker...

  • Tick This is the loudspeaker chosen for the first public demonstrations of the Blu-ray disc format
  • Tick This is the loudspeaker chosen to create the very first Dolby EX 6.1 channel soundtrack
  • Tick This is the loudspeaker chosen to create Blu-ray and DVD masters for Sony, MGM, TriStar, Columbia and many others
  • Tick This is the loudspeaker chosen to record the complete Carl Nielsen symphonies with the New York Philharmonic Orchestra
  • Tick This is the loudspeaker chosen for sound design for Star Wars Phantom Menace, Attack of the Clones and Revenge of the Sith
  • Tick This is the loudspeaker chosen to restore and remaster such film classics as Gone with the Wind and The Wizard of Oz
  • Tick This is the loudspeaker chosen chosen for sound production on Wall-E, Iron Man, King Kong, The Incredibles, Lord of the Rings: Return of the King, Finding Nemo, Pirates Of The Caribbean, Chicago, Lord of the Rings: The Two Towers, Black Hawk Down, Pearl Harbor, Lord of the Rings Fellowship of the Rings, Cast Away and many other major releases
  • Tick This is the loudspeaker that is available in the format of your choice: passive standmount (S150 MKII THX Ultra2), active standmount (MPS2510P), wall-mount (MP150) or in-wall/in-ceiling (IW150)

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Finish Black or White Satin
Impedance 4 Ohm
Frequency Response 60 Hz - 20 kHz,+/- 3dB
Power Handling 180 watts RMS
Recommended Amp Power 25-400 Watts
Sensetivity 91dB
Weight 9.8 kg
Warranty 10 Years Driver Warranty

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Part Exchange Available

Looking to upgrade and not sure what to do with your old gear? Trade-in with us and take the hassle out of finding a new home for your equipment.

We can take back any type of product we sell, from cables, to projectors, speakers, amplifiers, AV receivers, subwoofers and more.

Just fill in the form below and we'll get back to you.

Please note we don't purchase second hand goods for cash, we take trade-ins as part payment towards the purchase of new equipment.

PayPal Credit - Flexible Credit

Buy Now, Pay Later: Get 4 months 0% finance when you spend £99 or more. Look for the PayPal Credit button when making your purchase.

More information on PayPal Credit is available here.

Klarna Finance - Pay Monthly

Pay monthly plans for up to 48 months, available on purchases between £299 and £25,000.

0% ONIF6 6 Months
0% ONIF12 12 Months
0% ONIF24 24 Months
0% ONIF36 36 Months
0% ONIF48 48 Months

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Deposit variable between 10% and 50%, subject to a minimum loan value of £250.


Please note: These finance quotes are for a single purchase of the product listed on this page, at the price shown. Adding additional products or quantities to your order, or using any vouchers or other discounts will result in changes to the quotes and available terms.

For further information please visit the finance page.


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When in stock:

This item is available same day dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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