Bowers & Wilkins DB4S
2 lost · Artisan, BBC Sound
A subwoofer here is chosen by coverage arithmetic, not by pairing character — the swap adds about 50% of this position’s spend without changing what the system reaches down to.
KEF KF92
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
Twin force-cancelling drivers — eliminates cabinet vibration entirely.
Compact form factor — 331×353×362mm sealed cube per KEF official (corrected 2026-05-12 from prior "247×425×394mm" which was wrong on all three axes). Side-firing dual-opposing driver geometry inherently incompatible with cavity placement.
Competition record
Assessed against 2 rivals across the sixty systems: it takes the slot in none of its 3 head-to-heads.
Who it comes up against
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 200% of this position’s spend without changing what the system reaches down to.
Systems it is part of
- Tier H · BBC Sound as subwoofer
- Tier Hi · BBC Sound as subwoofer
- Tier L · Anchored as subwoofer
- Tier L · Characterful as subwoofer
- Tier L · Intimate as subwoofer
- Tier L · Twin Arms as subwoofer
- Tier L · Silent Path as subwoofer
- Tier L · Cavity-Native as subwoofer
- Tier L · PRaT as subwoofer
- Tier L · Reference as subwoofer
- Tier M · Silent Path as subwoofer
- Tier M · BBC Sound as subwoofer
What the reviewers said
KEF KF92 dual-driver compact sub KEF KF92 + What HiFi· Bass extension
exceptionally taut, no hangover What Hi-Fi/Australian Hi-Fi (Newport Labs) 2020· Bass control
the pulse is incredible What Hi-Fi/Australian Hi-Fi 2020· Physical impact
cleanest, deepest sub frequencies What Hi-Fi/Australian Hi-Fi (Newport Labs) 2020· Bass extension
How it scores
Bass
- Bass control 82 from listening evidence
- Physical impact 76 from listening evidence
- Bass extension 80 from listening evidence
Specifications
| powered | True |
|---|---|
| driver size mm | 229.0 |
| enclosure type | sealed |
| amp power w | 1000.0 |
| line input | True |
| speaker input | True |
| balanced input | False |
| crossover capability | low_pass_only |
| crossover range hz | 40/140 |
| eq options | iOS app DSP with room presets |
| frequency response hz | 11/200 |
| dimensions mm | 331/353/362 |
| weight kg | 20.05 |
| notes |