The Kef Kube 10B ranks #74 out of 145 total Medium Home Subwoofers (30-75 lbs) for sound quality. See all Subwoofers rankings for every top pick.
Brand: KEF
Prices on this page were last checked September 14, 2026 at 1:47 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#74 Kef Kube 10B: $800 Discontinued eBay
Pros: Sealed 10-inch with 300W RMS and KEF iBX intelligent bass extension algorithm. Three preset EQ options plus smart compression limiting for dynamic playback. Confidence recommended for small to medium rooms.
Cons: Discontinued.
How it compares: Just above it: Sumiko S.9 - $101 cheaper. Just below it: Paradigm Defiance X10 - $186 more.
| Amplifier Power | 300W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 114.0 dB |
| Cabinet Color | black |
| Country | United Kingdom |
| Dimensions | 14.6"H x 13.9"W x 14.6"D (370.8 x 353.1 x 370.8 mm) |
| Discontinued | Yes |
| Drivers | 10" (254mm) driver |
| Enclosure | sealed |
| Frequency Response | 24-140Hz |
| Measurement Source | Brent Butterworth |
| Output SPL at 16 Hz | 92.3 dB |
| Output SPL at 20 Hz | 99.4 dB |
| Output SPL at 25 Hz | 99.5 dB |
| Output SPL at 31.5 Hz | 106.7 dB |
| Output SPL at 40 Hz | 109.9 dB |
| Output SPL at 50 Hz | 113.1 dB |
| Output SPL at 63 Hz | 115.9 dB |
| Output SPL at 80 Hz | 117.1 dB |
| Warranty | 5/2/5 |
| Weight | 38.4 lbs (17.4 kg) |
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- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.