Subwoofer
well below typical
Among the 24 subwoofers in the catalogue, this one is well below 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.
Newest MJ Acoustics 2025 launch — 25th-anniversary update of original Pro 50 (2000). Original Pro 50 won 5-Star reviews from What HiFi, HiFi News, Home Cinema Choice; this Mk4 inherits that heritage.
Mk4 step-up from Mk3: 150W amp (vs 120W), upgraded MJ-proprietary long-throw driver, full app control via SR+ via Bluetooth LE, auto on/off, dual LFE inputs, 1-degree phase precision.
Pro series is MJ entry-tier music-focused — designed to integrate with anything from "small satellites to high-end floorstanders" per MJ official. For 102m³ room: undersized as primary sub, but plausible as low-volume detail sub or small-room/nearfield application. Most useful in pair configurations to give bass without dominating large room.
Class A/B MOSFET amplification — MJ signature, runs slightly warmer than Class D but provides characteristic MJ tonal warmth and "music-tuned" presentation per brand DNA.
Assessed against 3 rivals across the sixty systems: it takes the slot in none of its 15 head-to-heads.
12 lost · Anchored, BBC Sound, Cavity-Native, Characterful, Intimate, PRaT, Reference, Silent Path, Twin Arms
A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap saves about 71% of this position’s spend without changing what the system reaches down to.
2 lost · Artisan, BBC Sound
A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap saves about 56% of this position’s spend without changing what the system reaches down to.
1 lost · Vocals-First
A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap saves about 12% of this position’s spend without changing what the system reaches down to.
tight and punchy PROXY: MJ Pro 50 MkII (What Hi-Fi)· Bass control
punchy little unit PROXY: MJ Pro 50 MkII (What Hi-Fi)· Physical impact
| powered | True |
|---|---|
| driver size mm | 254.0 |
| enclosure type | sealed |
| amp power w | 150.0 |
| line input | True |
| speaker input | True |
| crossover capability | low_pass_only |
| crossover range hz | 20/120 |
| phase adjust | 1 degree increments via app |
| eq options | SR+ App control via Bluetooth Low Energy |
| frequency response hz | 19/200 |
| dimensions mm | 280/330/280 |
| weight kg | 11.6 |
| notes |