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MJ Acoustics


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MJ Acoustics
MJ Acoustics founded by John Jefferis was created to pursue an ideal, namely the reproduction of the most natural sounding, true to life bass possible with current technology, but at a price that favours both the wealthy and not-so-wealthy enthusiast. Each subwoofer unit is seriously over-engineered with generous headroom in all important areas. Components are hand picked and specifically designed into each system. MJ Acoustics unique combination of state-of-the-art electronis and tuned hand built cabinets, afford the user the ultimate in sub-bass control. Deep and powerful enough for the most demanding movie sound track, yet subtle, agile, fast, and accurate for the highest fidelity in music listening. Its just like beeing there!

All of this produces a subwoofer to engender pride for MJ Acoustics as a British Manufacturer, and for you the Customer.

Best of all its a 100% British product made by a 100% British company in Britain!
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MJ Acoustics Kensington Subwoofer
MJ Acoustics Kensington Subwoofer
Enhance your Audio for the finest sound stage.

Every Master-Class Active Subass System is hand-crafted, with our technicians individually responsible for the building and testing of each Kensington. From the dedicated circuit boards that make up the crossovers and main processing units to the individual power amps that power each of the perfectly matched opposing drivers. The build quality alone is unsurpassed, with each cabinet being meticulously constructed, damped and finished in real wood veneer.


Availability Retail (inc. 20% VAT)
£ 2,800.00
£ 2,800.00
£ 2,800.00
£ 2,800.00
£ 3,200.00
£ 3,200.00
Quantity / Units:
MJ Acoustics Reference 210 Subwoofer
MJ Acoustics Reference 210 Subwoofer
Reference 210

The success of the Pro 100Mk2 cabinet design made the Reference 210 a natural progression. It takes an established platform and adds the missing link that projects the model into a world class Reference Grade Audio product and establishes itself at home underpinning the most accomplished audio system. It doesn’t matter whether it is a pair of small stand mount speakers in a 2 channel stereo system or largest of floor standers. All parts of this models have been specially designed to position the Reference 210 firmly in Reference Series line-up. New driver elements such as spider and coil, new main CPU motherboard and separate amplifier to handle the increased power delivered to the driver and ABR assembly are just some of the areas of development undertaken.


Availability Retail (inc. 20% VAT)
£ 1,725.00
£ 1,725.00
£ 1,725.00
£ 1,725.00
£ 2,125.00
£ 2,125.00
Quantity / Units:
MJ Acoustics Pro 60 MK I Subwoofer
MJ Acoustics Pro 60 MK I Subwoofer
Pro 60 Mk1

When the Pro 50Mk3 was released there was only one observation from the design team when putting the final touches to this landmark model in the history of MJ. “will a larger version be even better?” Well, the answer is a resounding YES!! proportionally its the same diminutive size given the increase from 10″ to 12″ cone. So with the required tweaks in filter design to accommodate the natural roll off characteristic changes in the cone from the slightly increased mass together with larger internal cabinet volume, we established a magnetic structure and Gauss setting for the motor assembly that extracted the very most from this Bass Engine without the need to increase power by more than a few watts. The efficiency of the motor assembly was honed to perfection and the legendary Twin Crossovers installed to complete the design. Once again we set the standard for the most sound for pound you can achieve in a small cabinet.


Availability Retail (inc. 20% VAT)
£ 860.00
£ 860.00
£ 860.00
£ 860.00
£ 1,260.00
£ 1,260.00
Quantity / Units:
MJ Acoustics Windsor Subwoofer
MJ Acoustics Windsor Subwoofer
Enhance your Audio for the finest sound stage.

Every Master-Class Active Subass System is hand-crafted, with our technicians individually responsible for the building and testing of each Windsor. From the dedicated circuit boards that make up the crossovers and main processing units to the individual power amps that power each of the perfectly matched opposing drivers. The build quality alone is unsurpassed, with each cabinet being meticulously constructed, damped and finished in real wood veneer.


Availability Retail (inc. 20% VAT)
£ 5,995.00
£ 5,995.00
£ 5,995.00
£ 5,995.00
£ 6,225.00
£ 6,500.00
Quantity / Units:
MJ Acoustics Oxford Subwoofer
MJ Acoustics Oxford Subwoofer
Enhance your Audio for the finest sound stage.

Every Master-Class Active Subass System is hand-crafted, with our technicians individually responsible for the building and testing of each Oxford. From the dedicated circuit boards that make up the crossovers and main processing units to the individual power amps that power each of the perfectly matched opposing drivers. The build quality alone is unsurpassed, with each cabinet being meticulously constructed, damped and finished in real wood veneer.


Availability Retail (inc. 20% VAT)
£ 2,200.00
£ 2,200.00
£ 2,200.00
£ 2,200.00
£ 2,600.00
£ 2,600.00
Quantity / Units:
MJ Acoustics Reference 400 Subwoofer
MJ Acoustics Reference 400 Subwoofer
Reference 400
Specifications:
250watt MOSFET Amplifier
Speaker and Line Level inputs with Gain Control Range 99dB
Neutrik Speakon connector (High level 100k ohm)
Unbalanced RCA (phono) connectors (Gold Plated) (Low level 10k ohm)
Twin Sophisticated crossover circuits – variable increments between 20Hz and 120Hz
LFE Bypass setting (effective roll off set at 200hz)
12 volt trigger


Availability Retail (inc. 20% VAT)
£ 1,550.00
£ 1,550.00
£ 1,550.00
£ 1,550.00
£ 1,950.00
£ 1,950.00
Quantity / Units:
MJ Acoustics Pro 100 Mk II Subwoofer
MJ Acoustics Pro 100 Mk II Subwoofer
Pro 100 Mk II

15 years ago the original Pro 100 was released with a resounding thumbs up from some of the most respected magazines in the industry. It was even used in the HiFi World Reference system to demonstrate Valve amplifiers.

“MJ LOVES TO MAKE Music” was the heading for a first tests review from What HiFi. 5 Stars and a verdict that said “Superb bass weight from what is still a very compact cabinet”


Availability Retail (inc. 20% VAT)
£ 1,150.00
£ 1,150.00
£ 1,150.00
£ 1,150.00
£ 1,550.00
£ 1,550.00
Quantity / Units:
MJ Acoustics Pro 80 Mk I Subwoofer
MJ Acoustics Pro 80 Mk I Subwoofer
Pro 80 Mk1

When the Pro 50Mk3 was released there was only one observation from the design team when putting the final touches to this landmark model in the history of MJ. “will a larger version be even better?” Well, the answer was a resounding YES!! This gave rise to the release of the Pro 60Mk1 with larger cone area and larger cabinet. So how do you better this?

You take this platform and add the ability to make very accurate adjustments so that in multiple subwoofer systems you can properly tune them with repeatable settings that can be stored in non-volatile memory. You then push the boundaries as far as possible within the financial contraints of affordablity and extract the most output possible by tweaking the power available along with enhanced filters and crossover layout. All this achievable, because the microprocessor within the DAMP circuits monitors system status very carefully to make sure that the purest of output emanates from the cabinet without the slightest hint of distress or distortion in the waveform. It’s quite a marvel to listen to.


Availability Retail (inc. 20% VAT)
£ 975.00
£ 975.00
£ 975.00
£ 975.00
£ 1,375.00
£ 1,375.00
Quantity / Units:
MJ Acoustics Reference 100 MK III Subwoofer
MJ Acoustics Reference 100 MK III Subwoofer
Reference 100 Mk 3

As the entry point to the Reference Series, it enjoys the benefits of DAMP 2nd Generation along with matched component specification count and meticulous build quality. All reference series product has each and every component checked for measured specification and value so that each component can be passed as within the design tolerance for the grade of Reference Series accreditation. We know how important each component is within the audio chain and the tightest of tolerance makes the difference and qualifies Reference grade Status.


Availability Retail (inc. 20% VAT)
£ 865.00
£ 865.00
£ 865.00
£ 865.00
£ 1,065.00
£ 1,065.00
Quantity / Units:
MJ Acoustics M8 Spikes
MJ Acoustics M8 Spikes
Pack of 4 x M8 spikes for easy fit into all MJ Acoustic subwoofers and Subliminal S1R speaker models. Black spikes.


Availability Retail (inc. 20% VAT)
£ 30.00
Quantity / Units:
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