Short answer: the KEF KC92, if you are buying new. The KEF KF92 measures as well as it (#200 vs #203 of 212 subwoofers, 3.0/5 vs 3.0/5) but is discontinued, so only consider it used; the KEF KC92 is still sold new at $2,449.95.
What the KEF KC92 does well: A compact sealed subwoofer with twin back to back 9 inch drivers, a 1,000 watt amp and an optional wireless adapter, best for music. Watch for: No independent measurements yet, so its output can’t be compared with ranked subwoofers.
Why pick the KEF KF92: A discontinued compact sealed subwoofer with two opposing 9 inch drivers that cancel cabinet vibration, plus flexible placement settings. The catch: Maximum output averages only about 97dB, just 5 to 6dB more than the smaller KEF KC62, and it has about 5dB less mid-bass punch from 60 to 100Hz.
Buy the KEF KC92 new; the KEF KF92 is no longer sold new, so it only makes sense as a used find.
Worth knowing: the KEF KC92 has not been measured yet. Its rating is estimated from related models, with a likely range of 2.8 to 3.2, so treat this verdict as provisional.
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Specifications Side By Side
| KEF KC92 | KEF KF92 | |
|---|---|---|
| Price | $2,449.95 | $2,000 Discontinued |
| Ranked | #203 of 212 in Medium Home Subwoofers (30-75 lbs) Estimated | #200 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Warranty | 5/2 | 5/2/5 |
| Enclosure | sealed | sealed |
| Drivers | 2x 9” drivers, force-cancelling | 2x 9.2” (234mm) driver |
| Amplifier Power | 1000W RMS (2 x 500W) | 1000W RMS |
| Frequency Response | 11-200Hz, ±3dB | 11-160Hz |
| Maximum SPL | 110dB (manufacturer specified) | - |
| Dimensions | 13.9”H x 13”W x 14.2”D (352.5 x 330 x 360.5 mm) | 13.9”H x 13”W x 14.2”D (352.3 x 329.9 x 360.4 mm) |
| Weight | 44.1 lbs (20.0 kg) | 44.1 lbs (20.0 kg) |
| Cabinet Color | Black Gloss, White Gloss | black |
| Country | United Kingdom | United Kingdom |
| Output SPL at 20 Hz | - | 86.0 dB |
| Output SPL at 25 Hz | - | 91.6 dB |
| Output SPL at 31.5 Hz | - | 95.4 dB |
| Output SPL at 40 Hz | - | 101.1 dB |
| Output SPL at 50 Hz | - | 103.0 dB |
| Output SPL at 63 Hz | - | 104.4 dB |
| Output SPL at 80 Hz | - | 106.3 dB |
| Output SPL at 100 Hz | - | 107.2 dB |
| CEA-2010-A Average (40-80Hz) | - | 103.7 dB |
| Measurement Source | - | ErinsAudioCorner |
Where the Ratings Come From
- KEF KC92: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- KEF KF92: reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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