Short answer: the Monoprice SW-15. It ranks #8 of 137 subwoofers at $374.99; the Kef KC62 ranks #137 and costs $1519.99, so there is not much of a tradeoff to weigh.
What the Kef KC62 gets right: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure.
On the Monoprice SW-15 side: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. The catch: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.
Buy the Kef KC62 if the price matters more than the ranking. Buy the Monoprice SW-15 if the ranking matters more than the price.
Specifications Side By Side
| Kef KC62 | Monoprice SW-15 | |
|---|---|---|
| Price | $1,519.99 | $374.99 |
| Ranked | #137 of 137 in Medium Powered Home Subwoofers (30-75 lbs) | #8 of 137 in Medium Powered Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, bottom |
| Output SPL at 20 Hz | 80.0 dB | 101.2 dB |
| Output SPL at 25 Hz | 84.6 dB | 106.3 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 111.2 dB |
| Output SPL at 40 Hz | 92.2 dB | 116.0 dB |
| Output SPL at 50 Hz | 95.1 dB | 120.2 dB |
| Output SPL at 63 Hz | 97.7 dB | 120.5 dB |
| Output SPL at 80 Hz | 102.6 dB | 119.5 dB |
| Output SPL at 100 Hz | 104.2 dB | - |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 119.0 dB |
| Dimensions | 9.68"H x 10.07"W x 9.76"D (245.9 x 255.8 x 247.9 mm) | 18.1"H x 21.0"W x 22.7"D (459.7 x 533.4 x 576.6 mm) |
| Weight | 30.9 lbs / 14.0 kg | 66.1 lbs / 30.0 kg |
| Warranty | 5/2/5 | 1 |
| Cabinet Color | black, white | black |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Audioholics |
| Power Output (Watts) | 1000W RMS | 600W RMS / 800W peak |
| Frequency Response | 11-200Hz | 30-150Hz (-10dB) |
| Drivers | 2x 6.5" (165mm) driver | 15" (381mm) driver |
| Output SPL at 15 Hz | - | 90.0 dB |
| Crossover | - | 40-150Hz, 18dB/octave |
| Phase Control | - | 0° or 180° |
| Input Connections | - | Stereo line level and speaker level |
The Two Speakers In Full
Kef KC62: $1,519.99 Amazon
Pros: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure. Deep extension to 11Hz with five room placement EQ presets. Elegant design fits any décor.
| CEA-2010-A Average (40-80Hz) | 96.9 dB |
|---|---|
| Cabinet Color | black, white |
| Country | United Kingdom |
| Dimensions | 9.68"H x 10.07"W x 9.76"D (245.9 x 255.8 x 247.9 mm) |
| Drivers | 2x 6.5" (165mm) driver |
| Enclosure | sealed |
| Frequency Response | 11-200Hz |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 20 Hz | 80.0 dB |
| Output SPL at 25 Hz | 84.6 dB |
| Output SPL at 31.5 Hz | 88.5 dB |
| Output SPL at 40 Hz | 92.2 dB |
| Output SPL at 50 Hz | 95.1 dB |
| Output SPL at 63 Hz | 97.7 dB |
| Output SPL at 80 Hz | 102.6 dB |
| Output SPL at 100 Hz | 104.2 dB |
| Power Output (Watts) | 1000W RMS |
| Warranty | 5/2/5 |
| Weight | 30.9 lbs / 14.0 kg |
- Head-to-Head Comparisons
- Links
Monoprice SW-15: $374.99 Amazon
Pros: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup.
Cons: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.
Notes: Product # 41499
| CEA-2010-A Average (40-80Hz) | 119.0 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Crossover | 40-150Hz, 18dB/octave |
| Dimensions | 18.1"H x 21.0"W x 22.7"D (459.7 x 533.4 x 576.6 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 30-150Hz (-10dB) |
| Input Connections | Stereo line level and speaker level |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 90.0 dB |
| Output SPL at 20 Hz | 101.2 dB |
| Output SPL at 25 Hz | 106.3 dB |
| Output SPL at 31.5 Hz | 111.2 dB |
| Output SPL at 40 Hz | 116.0 dB |
| Output SPL at 50 Hz | 120.2 dB |
| Output SPL at 63 Hz | 120.5 dB |
| Output SPL at 80 Hz | 119.5 dB |
| Phase Control | 0° or 180° |
| Power Output (Watts) | 600W RMS / 800W peak |
| Warranty | 1 |
| Weight | 66.1 lbs / 30.0 kg |
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- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.