Free UK DeliveryFinance at checkout30 Day ReturnsWorldwide DeliveryAudio Affair Facebook

Spring Bargains

MJ Acoustics Reference 100 MkIV Subwoofer


. 0 Reviews . Write a Review

Enquiry/price check? Click here SKU: 3014
Ex VAT: £874.17

Available - please select an option below

Condition: Brand new in original retail packaging

* Required Fields


Earn 2098 loyalty points when you order this item.

You can earn loyalty points on every order you place on this website. If you select to create an account at checkout, your loyalty points will be saved and you can use these to discount future orders online. 


Each product page shows you how many loyalty points you can earn when you order that item. Essentially, for each £1 you spend, you earn 1 loyalty point and for every 1 point earned, 1p will be added to your loyalty point balance (this is the same as some of the UK's biggest loyalty point cards). So for example, if you spend £500, you'll earn 500 loyalty points which can be used to discount a future order by £5.00. 


Special offer - earn double loyalty points on orders placed between 8pm 23/05/24 and 9am 28/05/24. PLUS any loyalty points already earned in your account are also worth double discount at checkout.


Read more

Get a trade in quote

To reduce the price of this item, we may be able to accept your old equipment as a trade in (part exchange).

Please send us your details along with details of the item(s) you'd like to trade in and we'll come back to you within 2 working days (but usually a little sooner) with a quote.

Send us a message now

Do you have any questions on this item you'd like us to answer? Or have you seen it cheaper elsewhere and would like us to see if we can beat it? Send us the details below and we'll come back to you quickly (usually within 24hrs, sooner during opening hours)


Shape Square
Warranty length 2 Years (3 Years on registration)
Brand MJ Acoustics

Tech Specs

- 150 Watt MOSFET Amplifier
- Speaker and Line Level in
- Gain Control Range 99dB
- Neutrik Speakon connector
- Twin Unbalanced RCA (phono)
- 2x RCA (phono) LFE & Centre inputs
- Twin Sophisticated Crossover
- variable between 20-120Hz
- LFE Bypass setting 200Hz
- 12V trigger & Auto On/Off
- MJ’s Smart Remote app for iOS/Android
- IR Remote Control
- Phase Control: adjust between 0-180º
- Frequency response 13hz to 200hz
- D.I.P (Dynamic Intelligent Protection)
- Digitally Accurate MicroProcessor (DAMP)
- Specially designed cabinet structure
- Configuration made from inert (18mm) MDF
- Digital Display with power output meter
- Switched fused IEC mains input socket
- 250mm (10”) Ultra Long-throw Driver
- Heavy Duty steel chassis, Double Magnets
- Fully saturated High-Density Magnets
- Extended pole piece for piston movement
- Dimensions (WHD): 280mm X 320mm X 280mm
- Weight: 15.23kg

Product Description

MJ Acoustics Reference 100 Mk4 represents a noticeable upgrade in performance and features over the Mk3. It now offers the same performance as the Reference 200-SR but from a smaller cabinet; ideal to augment the bass for audiophile speakers.

3rd Gen Damp

DAMP 3rd Generation with matched component spec and meticulous build aids the serious computing and calculations that occur in the circuits. The on-board processor monitors, manages and handles these and DAMP grants it faster processor and extended memory cap. With Smart Remote for iOS and Android for real-time communication between user and multiple MJ subs, the processor is significantly enhanced over predecessors.

Reference Legacy

Each component is checked and measured so Reference components can be passed within the specs for the Reference Series accreditation. This is an established audiophile model with an extensive legacy around the world. MJ Acoustics have added a host of features to this latest Mk4-SR version. 4 supplementary rotary controls and 6 digit display is the obvious visual change but is just the beginning of the extra features adopted in this updated version.


Twin RCA inputs allow augmentation of bass frequencies within an audiophile system from line-level connection or the legendary high-level input patented by MJ Acoustics. RCA Input for LFE and RCA input for Centre channel. All inputs function simultaneously and this is encouraged when installing a Home Theatre system. You can boost the bass for speakers linked to the front Left & Right, Centre channel and the LFE source. An authentic immersive soundstage arises from the sub so all speakers in the system sound like huge floorstanders.


Power is augmented from 120 to 150Watts. Introduced in 2002, it has won multiple awards evolving into a vital part of the MJ Reference Series. It is easy to set up and position in the room and available in numerous finishes. MJA even provide a specialist bespoke paint and veneer service for a truly unique product with unbeatable size, features and musicality.


Bass from this small power-house belies its size. Visually fitting in with the smallest of rooms due to its 280mm square cabinet size, it offers an audiophile option for underpinning the most acclaimed speakers. Equipped with a 250mm long-throw driver and tweaked high-current power amp, Reference 100 Mk4 is now better value than ever before.

Smart Remote

Readily equipped for direct IR, the remote control and receiver make recalling user-presets a breeze. For those without access to iPod/iPad/iPhone/Android Tablet, there is specially developed “Smart Remote”, developed in-house over the past 4 years, that grants the ability to dial in the settings from the listening position.

Write Your Own Review

Write a Review

  • 1 star 2 stars 3 stars 4 stars 5 stars
    1 Star 2 Star 3 Star 4 Star 5 Star


Contact Details

Customer Services Landline
0121 224 7350/7351

Sales Landline
0121 224 7300/7401

Sales WhatsApp
07706 203859

As Featured/Seen In

The Telegraph
Gadget Show
BBC Midlands Today
Birmingham Mail
Hi-Fi Choice Magazine

Mobile Site

Copyright © Audio Affair (Alexander Michael LTD) 2006-2024. Vat No. 913183835. All rights reserved.