MJ Acoustics Reference 1 Mk4
Subwoofer
Relative price
above typical
Among the 24 subwoofers in the catalogue, this one is above typical.
A band places a component against its peers and carries no price. It is deliberately the only price indicator on this page: a second one, measured against a different set, would narrow the two together far enough to give the figure away.
What it is
Master-Class Series Reference 1 lineage — runs to Mk4 (current). Distinct within MJ range as the ONLY ported model. Asymmetrical cabinet with 100mm internal fluted port — MJ specifically engineered to "quietly use cabinet internal volume to assist driver".
Tower form factor (815mm tall, 320mm depth) — closer to floorstanding speaker proportions than cube-shape Reference Series. Glass top mantel + chrome fittings = "luxury subwoofer" Master-Class aesthetic.
For 102m³ room: appropriate primary sub for music-focused upper-mid tier systems where tonal warmth and rhythmic engagement are prioritised. Ported design enables -3dB-at-10Hz from 10" driver — extension matches much larger sealed designs.
Speakon high-level connection (100kΩ input impedance) — REL-style high-level connection but on MJ Master-Class — preferred for music systems where amp-output character is preserved.
What the reviewers said
impact and soul Stereo Times (Voth) 2023· Bass control
deep throbbing lows Stereo Times (Voth) 2023· Physical impact
ample lows (13Hz-200Hz) Stereo Times (Voth) 2023· Bass extension
How it scores
Bass
- Bass control 76 from listening evidence
- Physical impact 76 from listening evidence
- Bass extension 76 from listening evidence
Specifications
| powered | True |
|---|---|
| driver size mm | 254.0 |
| enclosure type | ported (down-firing) |
| amp power w | 250.0 |
| line input | True |
| speaker input | True |
| crossover capability | low_pass_only |
| crossover range hz | 20/120 |
| phase adjust | continuous 0-180 |
| eq options | Remote with 4 user presets + D.A.M.P 2nd Gen + digital display with power output meter |
| frequency response hz | 10/200 |
| dimensions mm | 500/815/320 |
| weight kg | 20.5 |
| notes | 10mm thick glass top mantel with chrome fittings — Master-Class aesthetic. 3-year UK warranty. |