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MJ Acoustics Reference 100 MkIV

Subwoofer

Relative price

below typical

Among the 24 subwoofers in the catalogue, this one is 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.

What it is

Same 10" driver and same -3dB-at-19Hz extension as Reference 200 — but 120W amp (vs 200W in Ref 200) and tighter cabinet volume make it more modest in dynamic envelope.

For 102m³ room: appropriate for low-volume music sub-tier or for complementing larger sub in dual-sub configuration. As single primary sub in 102m³ room: undersized, particularly at 95dB peak SPL @ 3.5m.

Reference 100 lineage runs to MkIV — 25+ year continuous evolution since original Reference 100 launch.

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 47% 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 saves about 21% 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 58% 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 w120.0
line inputTrue
speaker inputTrue
crossover capabilitylow_pass_only
crossover range hz20/120
phase adjustcontinuous 0-180
eq optionsReference Series remote with 4 user presets
frequency response hz19/200
dimensions mm280/330/280
weight kg11.6
notes