Short answer: the PSA XS15-BASE for output, the Starke Sound SW15 for extension to 14Hz. The XS15-BASE’s 15-inch sealed driver reaches 118.2dB CEA-2010-A average with deeper bass extension and slower room modes, while the SW15 is a sealed 15-inch with 450W RMS delivering tight controlled deep bass down to 14Hz. The Starke also costs $224 less at $1,075 against $1,299.
Buy the Power Sound Audio (PSA) XS15-BASE only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the HSU Research ULS-15 MK2 instead.
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Specifications Side By Side
| Power Sound Audio (PSA) XS15-BASE | Starke Sound SW15 | |
|---|---|---|
| Price | $1,299 Discontinued | $1,075 Discontinued |
| Ranked | #17 of 212 in Medium Home Subwoofers (30-75 lbs) | #31 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 107.1 dB | 98.0 dB |
| Output SPL at 25 Hz | 107.1 dB | 104.6 dB |
| Output SPL at 31.5 Hz | 107.1 dB | 110.0 dB |
| Output SPL at 40 Hz | 118.2 dB | 114.6 dB |
| Output SPL at 50 Hz | 118.2 dB | 118.4 dB |
| Output SPL at 63 Hz | 118.2 dB | 119.1 dB |
| CEA-2010-A Average (40-80Hz) | 118.2 dB (avg of 3/4 bands) | 117.3 dB |
| Dimensions | 20.7”H x 18.5”W x 19.5”D (527.0 x 469.9 x 495.3 mm) | 17.3”H x 16.5”W x 18.9”D (439.4 x 419.1 x 480.1 mm) |
| Weight | 73 lbs (33.1 kg) | 54.9 lbs (24.9 kg) |
| Warranty | 5 | - |
| Country | United States | United States |
| Measurement Source | Manufacturer | Audioholics |
| Frequency Response | 23-200Hz, ±3dB | 14-240Hz, ±3dB |
| Amplifier Power | 550W RMS / 1650W peak | 450W RMS / 900W peak |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
| Output SPL at 12.5 Hz | - | 86.0 dB |
| Output SPL at 15 Hz | - | 90.8 dB |
| Output SPL at 80 Hz | - | 117.2 dB |
| Output SPL at 100 Hz | - | 115.2 dB |
| Output SPL at 125 Hz | - | 113.8 dB |
| Cabinet Color | - | black |
| Crossover Frequency | - | 50-200Hz adjustable |
| Phase Control | - | 0°-180° adjustable |
| Inputs | - | 1 XLR (balanced), 3 RCA (unbalanced) |
| Features | - | Sealed subwoofer, outputs: XLR |
| 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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