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MJ Acoustics Reference 1 Mk4 Subwoofer


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Condition: Brand new in original retail packaging

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

Tech Specs

- Hand Made Cabinet
- Real Wood Veneer or High Gloss Paint
- Plinth Base: (BLACK) 36mm
- 10mm Glass Top with Blackout base
- DELRIN - H Turned Feet
- Floor Decoupling Spikes/Insert Feet


- Double Magnet High Gauss Energised
- 10" Driver with High Compliance Motor
- 50mm Voice CoilPure Oxygen Free Copper
- Dual Layer Voice Coil Windings
- Single Powered Driver
- Port Tuned Vortex Baffle-Loaded (100mm)


- Multi-Stage Audio Grade PS: Regulated
- Audio Grade Toroidal Transformers
- HQ 24ct Gold Plated PCB Tracks
- FR4 PCB Material + Damped PCB Standoffs
- Vibration reduction for PCB Mounting
- Reference Grade Component Matching
- Master Class Audiophile Design
- Gold Plated RCA Sockets
- Digital Display/ Power Output Meter
- Multi-Channel Inputs
- IR Remote Control enabled
- Remote Eye (out of sight recall)
- Smart Remote Enabled for 2 Way Comm
- Onboard IR Receiver on Rear Panel
- Speaker Level Connection - Speakon
- Stereo Line Level input L+R
- Line Level input LFE
- Auto Display Dimmer and Time Out


- D.A.M.P. 2nd Gen
- Twin X-Overs and Twin Gains
- User Memory Pre-sets: 4
- Gain Adjust: High Level/Line Level
- Infinite Gain adjust: -99 to 0db
- LFE Input with X-over: 20 - 200Hz
- LFE ByPass (200Hz) and Loop Out
- Aditional X-over: 20 - 120Hz
- Infinite Phase Adjustment 0 - 180
- 12v Trigger On and Off
- Auto Power on/off Sensitivity


Power Amp
- AntiThump Soft Start Power Up Circuit
- Intelligent Speaker Protection (CPU)
- Matched Linear MOSFET output Devices
- Discrete Instant High Current design
- Class A/B (250W RMS/500W Peak)
- Freq Response: 10Hz-200Hz (-3db)


- Dimensions (WHD): 300 x 815 x 300mm
- Weight: 27Kg

Product Description

MJ Acoustics Ref 1 Mk4 Subwoofer is a luxury subwoofer from MJ Acoustics’s Master-Class Series with elegant real wood veneer finish.

Sound stage

Every Master-Class Active Sub-bass System is hand-crafted, with 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.

High Quality MDF

Topped off with a toughened glass mantel, which has hand polished edges and blacked across the back to produce a mirror like finish across its surface.  Fabricated from the Highest Quality MDF ensuring the core cabinet construction is super strong. Delicately finished in a choice of luxury real wood veneers, it carries over this exquisite attention to detail as even the plinth is coated in a High Gloss multi-layer paint.

Master-Class Series

Only the very finest components are used in Master-Class Series product, with each model reflecting the very leading edge of audio technology. Indeed all models incorporate dedicated drive-units using MJ Acoustics’ basket, cone and magnet assemblies. Drive units are assembled and put through their paces here in the UK factory.

Fine Tuned

Performance is fine-tuned through an expensive and sophisticated combination of electronic crossover networks and dedicated power amplifiers which are painstakingly matched both mechanically and electronically.

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