Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality (rated 4.1/5) at $499.99 and is still sold new; the SVS SB12-Plus ranks #134 (rated 3.6/5) and is discontinued, so it is only an option used. The SVS SB12-Plus’s replacement, the SVS SB-2000 Pro, is rated 3.8/5 at $749.
The Monoprice SW-15 is the better-sounding option. A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room. The tradeoff: Budget-tier design, ported room gain dependency, 66.1 lbs (30 kg) mid-size, and limited dynamic headroom.
The case for the SVS SB12-Plus: A compact 12 inch sealed cube subwoofer with balanced and speaker level inputs, aimed at small rooms. Watch for: Sealed output falls to 97.4dB at 25Hz, 89.8dB at 20Hz and 87.8dB at 15Hz, so deep movie effects are weak.
Buy the Monoprice SW-15. It is rated higher for sound quality; the SVS SB12-Plus is no longer sold new.
Still deciding? The full Subwoofers rankings cover every ranked option.
A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room.
A compact 12 inch sealed cube subwoofer with balanced and speaker level inputs, aimed at small rooms.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Monoprice SW-15 | SVS SB12-Plus | |
|---|---|---|
| Price | $499.99 | $1,299 Discontinued |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #134 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | 87.8 dB |
| Output SPL at 20 Hz | 101.2 dB | 89.8 dB |
| Output SPL at 25 Hz | 106.3 dB | 97.4 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 101.1 dB |
| Output SPL at 40 Hz | 116.0 dB | 107.4 dB |
| Output SPL at 50 Hz | 120.2 dB | 112.2 dB |
| Output SPL at 63 Hz | 120.5 dB | 112.2 dB |
| Output SPL at 80 Hz | 119.5 dB | 111.8 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 110.9 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 13.5”H x 13.5”W x 13.5”D (342.9 x 342.9 x 342.9 mm) |
| Weight | 66.1 lbs (30.0 kg) | 39.9 lbs (18.1 kg) |
| Warranty | 1 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Ilkka Rissanen |
| Frequency Response | 30-150Hz (-10dB) | 22-150Hz |
| Amplifier Power | 600W RMS / 800W peak | 425W RMS |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | XLR (balanced), RCA, speaker-level |
| Drivers | 15” (381mm) driver | 12” (305mm) 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 |
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