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MJ Acoustics Reference 400 Subwoofer

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Ex VAT: £1,290.83

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

Tech Specs

- Double Magnet High Gauss Energized.
- 12" Driver with High Compliance Motor
- 50mm Voice Coil Ultra Pure Oxygen Free Copper Core
- Dual Layer Voice Coil Windings
- Single Powered Driver
- Multi-Stage Audio Grade Power Supplies - Regulated
- Audio Grade Toroidal Transformers
- High Quality 24ct Gold Plated PCB Tracks
- Flexible FR4 PCB Material
- Audio Damped PCB Standoffs
- Vibration reduction for PCB Mechanical Mounting
- Reference Grade Component Matching
- Reference Grade Class Audiophile Design
- Gold Plated RCA Sockets
- Rear Panel: Power Meter, Digital Display
- Multi-Channel Inputs
- Simultaneous Input use
- IR Remote Control enabled
- Remote Eye (for out of sight memory recall)
- Smart Remote Ennabled for 2 Way Communication
- Speaker Level Connection - Speakon
- Stereo Line Level input L+R
- Line Level input LFE, LFE/CEN input
- Auto Display Dimmer
- D.A.M.P. 3rd Gen
- Twin X-Overs and Twin Gains
- User Memory Pre-sets x 4
- Last Setting Auto Save & Recall on Power Up.
- High Level Gain Adjustable
- Line Level Gain Adjustable
- Infinite Gain adjustment from -99 to 0db
- LFE Input with X-over adjustment 20 - 200Hz
- LFE ByPass (200Hz)
- Aditional X-over with adjustment 20 - 120Hz
- LFE Loop Out
- Infinite Phase Adjustment 0 - 180
- 12v Trigger On and Off
- Auto Power on/off Sensitivity adjustment
- Anti Thump Soft Start Power Up Circuit
- Inteligent Speaker Protection (CPU Monitored)
- High Grade Matched Linear MOSFET output Devices
- ClassA/B Power Amplifier 250Watts RMS 500Watts Peak
- Frequency Response 13hz to 200Hz -3db in Room
- Dimensions (WHD): 345 x 383 x 345mm
- Weight: 19Kg

Product Description

The MJ Acoustics Reference 400 MkI is a feat of audio engineering, with the muscle and power to deliver stunningly rich bass response for even the largest of AV systems. Reaching down to a gut-wrenching 10Hz, the Reference 400 MkI outputs serious SPL with refinement and grip, as expected from an MJ Acoustics product. Setup is a breeze thanks to digital displays confirming all your settings and the out-of-sight remote control and remote eye receiver.

The Reference 400 was painstakingly designed from the ground up - featuring twin crossovers, 250W of power, a newly developed 12" driver. Somehow, MJ Acoustics have been able to cram these innovations into a compact cabinet of just 345mm cubed. The Reference 400 is engineered and voiced to integrate with a wide range of speakers, from discreet satellites to towering floorstanders, and with a bass output which can reach 10hZ, the Reference 400 can really add to the lower octaves of your system and soundstage.

The special ultra long-throw super-rigid 12" sub-bass driver is a rugged design and finish, and is perfectly fed by a 250W MOSFET amplifier.

On top of state-of-the-art electronics and premium components, the Reference 400's tuned cabinet is hand-built from furniture grade real wood veneer, and the finish is as premium as the performance! Deep and powerful for movie sound-tracks, yet subtle, agile, fast musically accurate for the highest fidelity in music listening. It’s just like being there!

Customer Reviews

  • Sergei Demidov

    14 Apr 2020

    Excellent subwoofer MJ Acoustics Reference 400,
    But if you want to improve a given subwoofer and make it sound even better,
    Then here are my recommendations for you:
    - Suspend it on the ropes (untie it from the floor resonance)
    - Buy a good power cable, such as DH Labs Red Wave AC Cable Oyaid C-004/P004e.
    - Buy a good cable to connect to your amplifier - e.g. Van Den Hul - The WIND MK II HYBRID (Halogen Free) or (2 x Van Den Hul CS-14 HYBRID (Halogen Free)) + and (2 x Van Den Hul CS-14 Hybrid (HALOGEN) -
    - Change fuse to Audio Magic Beeswax SHD Fuse
    - Change IEC itself to Furutech FI-03 (R)
    - I recommend to replace the wires from the speaker to the board for example with Mundorf M-Connect silver/gold SGW and the clams themselves should be replaced with Oyaid FTL-PP for example.

    I have also made other many improvements in my subwoofer, which will be difficult for an unprepared reader to understand and replicate himself, so if you manage to make these improvements that I have described above - then you will receive a non-pruned subwoofer - which will be better than many of the most expensive and eminent....
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Contact Details

UK Local Rate Number
0844 50 403 50

Sales Landline
0121 224 7300/7401

Customer Services Landline
0121 224 7350/7351

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