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 Jamo C 912 SUB ranks #189 (rated 3.2/5) and is discontinued, so it is only an option used.
The Monoprice SW-15 is the better-sounding choice. 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 Jamo C 912 SUB: A 12 inch ported subwoofer with a front port for flexible placement, for music and movies, now discontinued. Watch for: Maximum output in the upper bass trails the Infinity Speakers REFERENCE SUB R12, so it runs out of headroom sooner at high volume.
Buy the Monoprice SW-15. It is rated higher for sound quality and still sold new, while the Jamo C 912 SUB is discontinued.
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 12 inch ported subwoofer with a front port for flexible placement, for music and movies, 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
| Monoprice SW-15 | Jamo C 912 SUB | |
|---|---|---|
| Price | $499.99 | $599 Discontinued |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #189 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, front |
| Output SPL at 15 Hz | 90.0 dB | 78.4 dB |
| Output SPL at 20 Hz | 101.2 dB | 88.0 dB |
| Output SPL at 25 Hz | 106.3 dB | 95.5 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 99.0 dB |
| Output SPL at 40 Hz | 116.0 dB | 103.4 dB |
| Output SPL at 50 Hz | 120.2 dB | 106.5 dB |
| Output SPL at 63 Hz | 120.5 dB | 108.6 dB |
| Output SPL at 80 Hz | 119.5 dB | 108.1 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 106.7 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 17.9”H x 14”W x 18.9”D (454.4 x 355.3 x 479.6 mm) |
| Weight | 66.1 lbs (30.0 kg) | 41.7 lbs (18.9 kg) |
| Warranty | 1 | 5/2 |
| Cabinet Color | black | black, white, wood |
| Country | United States | Denmark |
| Measurement Source | Audioholics | ErinsAudioCorner |
| Frequency Response | 30-150Hz (-10dB) | 29-125Hz |
| Amplifier Power | 600W RMS / 800W peak | 200W RMS |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | - |
| Drivers | 15” (381mm) driver | 12” (305mm) driver |
| Output SPL at 100 Hz | - | 106.6 dB |
| Output SPL at 125 Hz | - | 104.9 dB |
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