Short answer: the Klipsch SPL-120. It ranks #19 of 212 subwoofers by sound quality (rated 4.1/5) at $429.99 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 Klipsch SPL-120 is the better-sounding choice. An affordable 12 inch ported subwoofer with room filling, clean bass and optional wireless connection. Watch for: Port chuffing is the known flaw: testers could not run it past about 60 to 70% volume before the noise became bothersome, a problem Klipsch fixed in the newer Klipsch RP-1200SW.
Why pick the Monitor Audio RXW12: A sealed 12 inch subwoofer with a strong amplifier for small to medium rooms, now discontinued. The catch: Output drops to 97.9dB at 31.5Hz and 88.9dB at 20Hz, so deep bass is limited.
Buy the Klipsch SPL-120. 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.
An affordable 12 inch ported subwoofer with room filling, clean bass and optional wireless connection.
A sealed 12 inch subwoofer with a strong amplifier for small to medium rooms, now discontinued.
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Specifications Side By Side
| Klipsch SPL-120 | Monitor Audio RXW12 | |
|---|---|---|
| Price | $429.99 | $799 Discontinued |
| Ranked | #19 of 212 in Medium Home Subwoofers (30-75 lbs) | #135 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 20 Hz | 97.9 dB | 88.9 dB |
| Output SPL at 25 Hz | 108.2 dB | 92.0 dB |
| Output SPL at 31.5 Hz | 113.5 dB | 97.9 dB |
| Output SPL at 40 Hz | 116.8 dB | 111.5 dB |
| Output SPL at 50 Hz | 119.8 dB | 114.9 dB |
| Output SPL at 63 Hz | 120.9 dB | 106.3 dB |
| Output SPL at 80 Hz | 121.2 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.7 dB | 110.9 dB (avg of 3/4 bands) |
| Dimensions | 17.7”H x 14.7”W x 19.9”D (450.8 x 372.9 x 504.7 mm) | 15”H x 16.9”W x 16.9”D (381.0 x 430.0 x 430.0 mm) |
| Weight | 45 lbs (20.4 kg) | 49.8 lbs (22.6 kg) |
| Warranty | 5/2 | 5 |
| Cabinet Color | black | - |
| Country | United States | United Kingdom |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Amplifier Power | 300W RMS | 500W RMS |
| Frequency Response | 24-125Hz | 21-40Hz |
| Drivers | 12” (305mm) driver | 12” (305mm) driver |
| Output SPL at 16 Hz | 87.2 dB | - |
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