Short answer: the Rythmik F12 for value, the KEF KC62 for size. The F12 is a sealed 12-inch servo sub with 370W RMS that offers excellent value. The KC62 counters with a basketball-sized sealed cabinet, dual 6.5-inch force-canceling drivers and 1000W, but it costs $1,579.95 against the F12’s $1,439.
Buy the Rythmik F12. It is rated higher for sound quality than the KEF KC62 and costs less, which makes it the one to get unless you need something the other one does better.
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Specifications Side By Side
| KEF KC62 | Rythmik F12 | |
|---|---|---|
| Price | $1,579.95 | $1,439 |
| Ranked | #212 of 212 in Medium Home Subwoofers (30-75 lbs) | #21 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 80.0 dB | 103.6 dB |
| Output SPL at 25 Hz | 84.6 dB | 106.7 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 113.5 dB |
| Output SPL at 40 Hz | 92.2 dB | 118.3 dB |
| Output SPL at 50 Hz | 95.1 dB | 119.1 dB |
| Output SPL at 63 Hz | 97.7 dB | 120.4 dB |
| Output SPL at 80 Hz | 102.6 dB | 119.6 dB |
| Output SPL at 100 Hz | 104.2 dB | - |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 119.3 dB |
| Dimensions | 9.7”H x 10.1”W x 9.8”D (245.9 x 255.8 x 247.9 mm) | 15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm) |
| Weight | 30.9 lbs (14.0 kg) | 75 lbs (34.0 kg) |
| Warranty | 5/2/5 | 5/3 |
| Cabinet Color | black, white | black |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Brent Butterworth |
| Amplifier Power | 1000W RMS | 370W RMS |
| Frequency Response | 11-200Hz | 14Hz extension |
| Drivers | 2x 6.5” (165mm) driver | 12” (305mm) driver |
| Output SPL at 16 Hz | - | 101.0 dB |
| Inputs | - | XLR (2), RCA (line/LFE) |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
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