Short answer: both are discontinued, so this only matters if you are buying used. Used, the MartinLogan Dynamo 1600X is the better pick: it ranks #3 of 212 subwoofers by sound quality (rated 4.2/5), against #30 (rated 3.9/5) for the Power Sound Audio (PSA) XS15SE.
The MartinLogan Dynamo 1600X is the better-sounding option. A sealed 15 inch subwoofer with forceful, tight bass, front or down firing setup, and app based room correction, now discontinued. The catch: Output falls to 86.2dB at 15Hz, so the very lowest effects are weaker than the strong midbass numbers suggest.
What the Power Sound Audio (PSA) XS15SE does well: A compact sealed 15 inch subwoofer with strong output for movies and music, now discontinued. The catch: At 67 lbs (30.4 kg) and 495.3H x 431.8W x 457.2D mm it is heavy and sizeable even though it is sealed.
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.
Still deciding? The full Subwoofers rankings cover every ranked option.
A sealed 15 inch subwoofer with forceful, tight bass, front or down firing setup, and app based room correction, now discontinued.
A compact sealed 15 inch subwoofer with strong output for movies and music, now discontinued.
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Specifications Side By Side
| MartinLogan Dynamo 1600X | Power Sound Audio (PSA) XS15SE | |
|---|---|---|
| Price | $1,606.77 Discontinued | $1,499 Discontinued |
| Ranked | #3 of 212 in Medium Home Subwoofers (30-75 lbs) | #30 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 15 Hz | 86.2 dB | 96.5 dB |
| Output SPL at 20 Hz | 99.4 dB | 100.6 dB |
| Output SPL at 25 Hz | 103.9 dB | 107.2 dB |
| Output SPL at 31.5 Hz | 111.7 dB | 110.6 dB |
| Output SPL at 40 Hz | 118.4 dB | 114.7 dB |
| Output SPL at 50 Hz | 121.0 dB | 117.9 dB |
| Output SPL at 63 Hz | 121.8 dB | 119.1 dB |
| Output SPL at 80 Hz | 121.0 dB | 119.4 dB |
| Output SPL at 100 Hz | 120.2 dB | 119.3 dB |
| Output SPL at 125 Hz | 119.0 dB | 118.6 dB |
| CEA-2010-A Average (40-80Hz) | 120.5 dB | 117.8 dB |
| Dimensions | 20.1”H x 17.9”W x 19.1”D (510.5 x 454.7 x 485.1 mm) | 19.5”H x 17”W x 18”D (495.3 x 431.8 x 457.2 mm) |
| Weight | 56 lbs (25.4 kg) | 67 lbs (30.4 kg) |
| Warranty | 3 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Frequency Response | 20-200Hz, ±3dB | 23-200Hz, ±3dB |
| Amplifier Power | 900W RMS / 1800W peak | 550W RMS / 1650W peak |
| Inputs | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) | - |
| 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 | - |
| Output SPL at 12.5 Hz | - | 91.9 dB |
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