Short answer: the HSU Research ULS-15 MK2 for value, the KEF KC62 for a tiny sealed cabinet. The ULS-15 MK2’s sealed design delivers tight, accurate bass with low bloat and it costs $580.95 less. The KC62 crams dual 6.5-inch force-canceling drivers and 1000W into an ultra-compact, basketball-sized sealed enclosure.
Buy the HSU Research ULS-15 MK2. It is rated higher for sound quality than the KEF KC62 and costs less, so only choose the other one for a particular feature it does better.
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Specifications Side By Side
| HSU Research ULS-15 MK2 | KEF KC62 | |
|---|---|---|
| Price | $999.00 | $1,579.95 |
| Ranked | #4 of 212 in Medium Home Subwoofers (30-75 lbs) | #212 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 12.5 Hz | 93.7 dB | - |
| Output SPL at 15 Hz | 98.0 dB | - |
| Output SPL at 20 Hz | 102.4 dB | 80.0 dB |
| Output SPL at 25 Hz | 107.7 dB | 84.6 dB |
| Output SPL at 31.5 Hz | 113.4 dB | 88.5 dB |
| Output SPL at 40 Hz | 118.3 dB | 92.2 dB |
| Output SPL at 50 Hz | 120.8 dB | 95.1 dB |
| Output SPL at 63 Hz | 121.2 dB | 97.7 dB |
| Output SPL at 80 Hz | 121.1 dB | 102.6 dB |
| Output SPL at 100 Hz | 120.7 dB | 104.2 dB |
| Output SPL at 125 Hz | 120.7 dB | - |
| CEA-2010-A Average (40-80Hz) | 120.3 dB | 96.9 dB |
| Dimensions | 19”H x 18”W x 19.5”D (482.6 x 457.2 x 495.3 mm) | 9.7”H x 10.1”W x 9.8”D (245.9 x 255.8 x 247.9 mm) |
| Weight | 65 lbs (29.5 kg) | 30.9 lbs (14.0 kg) |
| Warranty | 7/2(+3) | 5/2/5 |
| Cabinet Color | black, wood | black, white |
| Country | United States | United Kingdom |
| Measurement Source | Audioholics | ErinsAudioCorner |
| Frequency Response | 20-200Hz, ±1dB | 11-200Hz |
| Amplifier Power | 600W RMS / 2000W peak | 1000W RMS |
| Crossover Frequency | 30-90Hz adjustable | - |
| Phase Control | 0°-180° | - |
| Features | Q control, sealed subwoofer, EQ1/EQ2 modes | - |
| Drivers | 15” (381mm) driver | 2x 6.5” (165mm) driver |
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