Short answer: the HSU Research ULS-15 MK2. It ranks #4 of 212 subwoofers by sound quality (rated 4.2/5) at $999 and is still sold new; the Power Sound Audio (PSA) XS15SE ranks #30 (rated 3.9/5) and is discontinued, so it is only an option used.
The HSU Research ULS-15 MK2 is the better-sounding pick. A sealed 15 inch subwoofer with tight, accurate bass, a great value in large subs. The tradeoff: No phone app or room correction, so setup is manual, and it ships in a plain vinyl finish where a similarly priced SVS offers gloss black.
What the Power Sound Audio (PSA) XS15SE does well: A compact sealed 15 inch subwoofer with strong output for movies and music, now discontinued. Watch for: 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 HSU Research ULS-15 MK2. It is rated higher for sound quality, and the Power Sound Audio (PSA) XS15SE is discontinued, so it is only available used.
Looking for alternatives? See the complete Subwoofers rankings.
A sealed 15 inch subwoofer with tight, accurate bass, a great value in large subs.
A compact sealed 15 inch subwoofer with strong output for movies and music, now discontinued.
Prices on this page were last checked October 29, 2026 at 4:42 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| HSU Research ULS-15 MK2 | Power Sound Audio (PSA) XS15SE | |
|---|---|---|
| Price | $999.00 | $1,499 Discontinued |
| Ranked | #4 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 12.5 Hz | 93.7 dB | 91.9 dB |
| Output SPL at 15 Hz | 98.0 dB | 96.5 dB |
| Output SPL at 20 Hz | 102.4 dB | 100.6 dB |
| Output SPL at 25 Hz | 107.7 dB | 107.2 dB |
| Output SPL at 31.5 Hz | 113.4 dB | 110.6 dB |
| Output SPL at 40 Hz | 118.3 dB | 114.7 dB |
| Output SPL at 50 Hz | 120.8 dB | 117.9 dB |
| Output SPL at 63 Hz | 121.2 dB | 119.1 dB |
| Output SPL at 80 Hz | 121.1 dB | 119.4 dB |
| Output SPL at 100 Hz | 120.7 dB | 119.3 dB |
| Output SPL at 125 Hz | 120.7 dB | 118.6 dB |
| CEA-2010-A Average (40-80Hz) | 120.3 dB | 117.8 dB |
| Dimensions | 19”H x 18”W x 19.5”D (482.6 x 457.2 x 495.3 mm) | 19.5”H x 17”W x 18”D (495.3 x 431.8 x 457.2 mm) |
| Weight | 65 lbs (29.5 kg) | 67 lbs (30.4 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black, wood | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Frequency Response | 20-200Hz, ±1dB | 23-200Hz, ±3dB |
| Amplifier Power | 600W RMS / 2000W peak | 550W RMS / 1650W peak |
| Crossover Frequency | 30-90Hz adjustable | - |
| Phase Control | 0°-180° | - |
| Features | Q control, sealed subwoofer, EQ1/EQ2 modes | - |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
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