Short answer: the JL Audio E112. It ranks #34 of 212 subwoofers by sound quality, rated 3.9/5, at $2,500. The KEF KC92 ranks #203, rated 3.0/5, at $2,449.95, $50.05 cheaper, a saving that is not big enough to make up the sound-quality gap.
Why pick the KEF KC92: 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.
The JL Audio E112 is the better-sounding choice. A sealed 12 inch subwoofer with fast, powerful bass, a very strong amplifier and excellent build quality. The tradeoff: There are no balanced inputs and no built-in EQ, which a SVS SB13-Ultra with similar output includes for $400 to $500 less.
Buy the JL Audio E112. It is rated higher for sound quality, and saving $50.05 with the KEF KC92 does not make up for the sound-quality gap.
About the ratings: the KEF KC92’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 2.8 to 3.2, so this verdict could change once it is measured.
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Specifications Side By Side
| KEF KC92 | JL Audio E112 | |
|---|---|---|
| Price | $2,449.95 | $2,500 |
| Ranked | #203 of 212 in Medium Home Subwoofers (30-75 lbs) Estimated | #34 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Warranty | 5/2 | 3 |
| Enclosure | sealed | sealed |
| Drivers | 2x 9” drivers, force-cancelling | 12” (305mm) driver |
| Amplifier Power | 1000W RMS (2 x 500W) | 1500W RMS |
| Frequency Response | 11-200Hz, ±3dB | 22-118Hz, ±1.5dB |
| Maximum SPL | 110dB (manufacturer specified) | - |
| Dimensions | 13.9”H x 13”W x 14.2”D (352.5 x 330 x 360.5 mm) | 16.2”H x 15.5”W x 18.4”D (412.2 x 393.7 x 467.1 mm) |
| Weight | 44.1 lbs (20.0 kg) | 73.4 lbs (33.3 kg) |
| Cabinet Color | Black Gloss, White Gloss | black |
| Country | United Kingdom | United States |
| Output SPL at 12.5 Hz | - | 90.7 dB |
| Output SPL at 15 Hz | - | 95.6 dB |
| Output SPL at 20 Hz | - | 100.5 dB |
| Output SPL at 25 Hz | - | 106.2 dB |
| Output SPL at 31.5 Hz | - | 111.6 dB |
| Output SPL at 40 Hz | - | 115.4 dB |
| Output SPL at 50 Hz | - | 117.7 dB |
| Output SPL at 63 Hz | - | 118.0 dB |
| Output SPL at 80 Hz | - | 116.7 dB |
| Output SPL at 100 Hz | - | 115.5 dB |
| Output SPL at 125 Hz | - | 114.5 dB |
| CEA-2010-A Average (40-80Hz) | - | 117.0 dB |
| Measurement Source | - | Audioholics |
Where the Ratings Come From
- KEF KC92: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- JL Audio E112: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
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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