Short answer: the JTR Captivator 212PRO on amplifier power, the MartinLogan Dynamo 1600X on deep-bass output. The Dynamo is a sealed 15-inch with 900W RMS and 1800W peak that delivers forceful, clean, tight low bass, with mid-range output listed at 121.5 dB. The JTR pairs a dual 12-inch ported cabinet with a 1200W DSP amp, but costs $2,799 against $1,606.77.
Buy the JTR Speakers Captivator 212PRO. It is rated higher for sound quality; the MartinLogan Dynamo 1600X is no longer sold new.
Looking for alternatives? See the complete Subwoofers rankings.
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Specifications Side By Side
| JTR Speakers Captivator 212PRO | MartinLogan Dynamo 1600X | |
|---|---|---|
| Price | $2,799 each | $1,606.77 Discontinued |
| Ranked | #1 of 212 in Medium Home Subwoofers (30-75 lbs) | #3 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 25 Hz | 95.4 dB | 103.9 dB |
| Output SPL at 31.5 Hz | 112.2 dB | 111.7 dB |
| Output SPL at 40 Hz | 122.7 dB | 118.4 dB |
| Output SPL at 50 Hz | 129.2 dB | 121.0 dB |
| Output SPL at 63 Hz | 131.3 dB | 121.8 dB |
| Output SPL at 80 Hz | 133.2 dB | 121.0 dB |
| Output SPL at 100 Hz | 134.6 dB | 120.2 dB |
| Output SPL at 125 Hz | 135.2 dB | 119.0 dB |
| CEA-2010-A Average (40-80Hz) | 129.1 dB | 120.5 dB |
| Dimensions | 16”H x 30”W x 22.5”D (406.4 x 762.0 x 571.5 mm) | 20.1”H x 17.9”W x 19.1”D (510.5 x 454.7 x 485.1 mm) |
| Weight | 71 lbs (32.2 kg) | 56 lbs (25.4 kg) |
| Warranty | 5/3 | 3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Data-bass | Audioholics |
| Amplifier Power | 1200W RMS; Class D with DSP | 900W RMS / 1800W peak |
| Inputs | XLR and RCA | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) |
| Drivers | 2x 12” (305mm) drivers | 15” (381mm) driver |
| XLR Input | Yes | Yes |
| RCA Input | Yes | Yes |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Output SPL at 15 Hz | - | 86.2 dB |
| Output SPL at 20 Hz | - | 99.4 dB |
| Frequency Response | - | 20-200Hz, ±3dB |
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