Short answer: the MartinLogan Dynamo 1600X for output and depth, the KEF KC62 for a compact sealed cabinet. The Dynamo 1600X pairs a sealed 15-inch driver with 900W RMS and 1800W peak for forceful, clean, tight low bass and 121.5 dB mid-range output, but its room integration needs attention and it costs $1,606.77. The KC62 counters with dual 6.5-inch force-canceling drivers and 1000W in an ultra-compact basketball-sized sealed enclosure.
Buy the KEF KC62 if you want one new; the MartinLogan Dynamo 1600X is discontinued, so only look for it used.
Looking for alternatives? See the complete Subwoofers rankings.
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Specifications Side By Side
| KEF KC62 | MartinLogan Dynamo 1600X | |
|---|---|---|
| Price | $1,579.95 | $1,606.77 Discontinued |
| Ranked | #212 of 212 in Medium Home Subwoofers (30-75 lbs) | #3 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 80.0 dB | 99.4 dB |
| Output SPL at 25 Hz | 84.6 dB | 103.9 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 111.7 dB |
| Output SPL at 40 Hz | 92.2 dB | 118.4 dB |
| Output SPL at 50 Hz | 95.1 dB | 121.0 dB |
| Output SPL at 63 Hz | 97.7 dB | 121.8 dB |
| Output SPL at 80 Hz | 102.6 dB | 121.0 dB |
| Output SPL at 100 Hz | 104.2 dB | 120.2 dB |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 120.5 dB |
| Dimensions | 9.7”H x 10.1”W x 9.8”D (245.9 x 255.8 x 247.9 mm) | 20.1”H x 17.9”W x 19.1”D (510.5 x 454.7 x 485.1 mm) |
| Weight | 30.9 lbs (14.0 kg) | 56 lbs (25.4 kg) |
| Warranty | 5/2/5 | 3 |
| Cabinet Color | black, white | black |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Audioholics |
| Amplifier Power | 1000W RMS | 900W RMS / 1800W peak |
| Frequency Response | 11-200Hz | 20-200Hz, ±3dB |
| Drivers | 2x 6.5” (165mm) driver | 15” (381mm) driver |
| Output SPL at 15 Hz | - | 86.2 dB |
| Output SPL at 125 Hz | - | 119.0 dB |
| Inputs | - | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) |
| 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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