Short answer: the Dynamo 1600X for measured output, the PSA XV15 for deep ported bass. The sealed 15-inch Dynamo delivers forceful, clean, tight low bass from 900W RMS and 1800W peak, with a 121.5 dB mid-range output figure to weigh. The PSA XV15 is a 15-inch ported downfirer with 500W that digs deep into the lowest frequencies with crisp detail.
Buy the MartinLogan Dynamo 1600X only if you find one used in good condition; both are discontinued, and it is the better rated of the two.
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Specifications Side By Side
| MartinLogan Dynamo 1600X | Power Sound Audio (PSA) XV15 | |
|---|---|---|
| Price | $1,606.77 Discontinued | $1,995 Discontinued |
| Ranked | #3 of 212 in Medium Home Subwoofers (30-75 lbs) | #10 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, bottom |
| Output SPL at 15 Hz | 86.2 dB | - |
| Output SPL at 20 Hz | 99.4 dB | 110.2 dB |
| Output SPL at 25 Hz | 103.9 dB | 110.2 dB |
| Output SPL at 31.5 Hz | 111.7 dB | 110.2 dB |
| Output SPL at 40 Hz | 118.4 dB | 119.5 dB |
| Output SPL at 50 Hz | 121.0 dB | 119.5 dB |
| Output SPL at 63 Hz | 121.8 dB | 119.5 dB |
| Output SPL at 80 Hz | 121.0 dB | - |
| Output SPL at 100 Hz | 120.2 dB | - |
| Output SPL at 125 Hz | 119.0 dB | - |
| CEA-2010-A Average (40-80Hz) | 120.5 dB | 119.5 dB (avg of 3/4 bands) |
| Dimensions | 20.1”H x 17.9”W x 19.1”D (510.5 x 454.7 x 485.1 mm) | 23”H x 17”W x 22”D (584.2 x 431.8 x 558.8 mm) |
| Weight | 56 lbs (25.4 kg) | 75 lbs (34.0 kg) |
| Warranty | 3 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 20-200Hz, ±3dB | 21-200Hz |
| Amplifier Power | 900W RMS / 1800W peak | 500W RMS / 1000W peak |
| Inputs | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) | Stereo line level and speaker level |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
| 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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