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MJ Acoustics Slimpact SR

Subwoofer

Relative price

typical

Among the 24 subwoofers in the catalogue, this one is 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

Slim form-factor variant — MJ engineered specifically for placement where conventional cube-shape Reference series cannot fit. Tall narrow cabinet (~800mm tall, 200mm deep) suits behind-furniture or narrow-alcove placement.

Amongst MJ range, this is the only model whose dimensions allow placement INSIDE the 305mm sealed cavity (200mm depth fits 285mm rule with 85mm rear clearance). All other MJ models exceed the cavity-placement depth envelope.

Competition record

Assessed against 3 rivals across the sixty systems: it takes the slot in none of its 15 head-to-heads.

Who it comes up against

KEF KF92

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 19% of this position’s spend without changing what the system reaches down to.

Bowers & Wilkins DB4S

2 lost · Artisan, BBC Sound

A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap adds about 22% of this position’s spend without changing what the system reaches down to.

BK Electronics XXLS400-DF MK3

1 lost · Vocals-First

A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap adds about 144% of this position’s spend without changing what the system reaches down to.

What the reviewers said

controlled, tuneful, accurate PROXY: MJ Reference 200 / Ref 1 Mk4· Bass control
authoritative not slam-led PROXY: MJ Reference line· Physical impact

How it scores

Bass

  • Bass control 72 from listening evidence
  • Physical impact 70 from listening evidence
  • Bass extension 71 from listening evidence

Specifications

poweredTrue
driver size mm254.0
enclosure typesealed
amp power w200.0
line inputTrue
speaker inputTrue
crossover capabilitylow_pass_only
crossover range hz20/120
phase adjust1 degree app-controlled
eq optionsSmart Remote (SR) app via Bluetooth LE
frequency response hz22/200
dimensions mm300/800/200
weight kg20.0
notes200mm depth FITS sealed cavity 285mm rule with 85mm clearance — unusual among MJ range to fit cavity placement.