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 Monitor Audio RXW12 ranks #135 (rated 3.6/5) 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. Watch for: 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 Monitor Audio RXW12 does well: A sealed 12 inch subwoofer with a strong amplifier for small to medium rooms, now discontinued. Watch for: Output drops to 97.9dB at 31.5Hz and 88.9dB at 20Hz, so deep bass is limited.
Buy the HSU Research ULS-15 MK2. It is rated higher for sound quality and still sold new, while the Monitor Audio RXW12 is discontinued.
Want more options? Browse the full Subwoofers rankings.
A sealed 15 inch subwoofer with tight, accurate bass, a great value in large subs.
A sealed 12 inch subwoofer with a strong amplifier for small to medium rooms, now discontinued.
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Specifications Side By Side
| HSU Research ULS-15 MK2 | Monitor Audio RXW12 | |
|---|---|---|
| Price | $999.00 | $799 Discontinued |
| Ranked | #4 of 212 in Medium Home Subwoofers (30-75 lbs) | #135 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 12.5 Hz | 93.7 dB | - |
| Output SPL at 15 Hz | 98.0 dB | - |
| Output SPL at 20 Hz | 102.4 dB | 88.9 dB |
| Output SPL at 25 Hz | 107.7 dB | 92.0 dB |
| Output SPL at 31.5 Hz | 113.4 dB | 97.9 dB |
| Output SPL at 40 Hz | 118.3 dB | 111.5 dB |
| Output SPL at 50 Hz | 120.8 dB | 114.9 dB |
| Output SPL at 63 Hz | 121.2 dB | 106.3 dB |
| Output SPL at 80 Hz | 121.1 dB | - |
| Output SPL at 100 Hz | 120.7 dB | - |
| Output SPL at 125 Hz | 120.7 dB | - |
| CEA-2010-A Average (40-80Hz) | 120.3 dB | 110.9 dB (avg of 3/4 bands) |
| Dimensions | 19”H x 18”W x 19.5”D (482.6 x 457.2 x 495.3 mm) | 15”H x 16.9”W x 16.9”D (381.0 x 430.0 x 430.0 mm) |
| Weight | 65 lbs (29.5 kg) | 49.8 lbs (22.6 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black, wood | - |
| Country | United States | United Kingdom |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 20-200Hz, ±1dB | 21-40Hz |
| Amplifier Power | 600W RMS / 2000W peak | 500W RMS |
| Crossover Frequency | 30-90Hz adjustable | - |
| Phase Control | 0°-180° | - |
| Features | Q control, sealed subwoofer, EQ1/EQ2 modes | - |
| Drivers | 15” (381mm) driver | 12” (305mm) driver |
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