Short answer: the RSL Speedwoofer 10S MKII for ported output, the KEF KC62 for sealed compactness. The 10S MKII pairs a 10-inch ported driver with a 400W RMS (1020W peak) XDR amplifier. The KC62 answers with dual 6.5-inch force-canceling drivers and 1000W in an ultra-compact basketball-sized sealed enclosure.
Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII. 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.
Want more options? Browse the full Subwoofers rankings.
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Specifications Side By Side
| KEF KC62 | RSL (Rogersound Labs) Speedwoofer 10S MKII | |
|---|---|---|
| Price | $1,579.95 | $499 |
| Ranked | #212 of 212 in Medium Home Subwoofers (30-75 lbs) | #124 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, rear |
| Output SPL at 20 Hz | 80.0 dB | 100.0 dB |
| Output SPL at 25 Hz | 84.6 dB | 105.0 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 107.7 dB |
| Output SPL at 40 Hz | 92.2 dB | 110.3 dB |
| Output SPL at 50 Hz | 95.1 dB | 112.9 dB |
| Output SPL at 63 Hz | 97.7 dB | 113.0 dB |
| Output SPL at 80 Hz | 102.6 dB | 112.1 dB |
| Output SPL at 100 Hz | 104.2 dB | 111.4 dB |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 112.1 dB |
| Dimensions | 9.7”H x 10.1”W x 9.8”D (245.9 x 255.8 x 247.9 mm) | 15.5”H x 15”W x 15.7”D (393.7 x 381.0 x 400.0 mm) |
| Weight | 30.9 lbs (14.0 kg) | 40.6 lbs (18.4 kg) |
| Warranty | 5/2/5 | 5/2 |
| Cabinet Color | black, white | black, white |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Audioholics |
| Amplifier Power | 1000W RMS | 400W RMS |
| Frequency Response | 11-200Hz | 21-200Hz |
| Drivers | 2x 6.5” (165mm) driver | 10” (254mm) driver |
| Output SPL at 15 Hz | - | 89.0 dB |
| Output SPL at 125 Hz | - | 110.7 dB |
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