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 MartinLogan Dynamo 1100X ranks #37 (rated 3.9/5) and is discontinued, so it is only an option used.
The case for the Monoprice SW-15: 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.
Why pick the MartinLogan Dynamo 1100X: A compact sealed 12 inch subwoofer with punchy deep bass and built in room correction, now discontinued. The tradeoff: Output falls to 90.6dB at 15Hz and 95.9dB at 20Hz, which is limited for infrasonic effects in a large room.
Buy the Monoprice SW-15. It is rated higher for sound quality; the MartinLogan Dynamo 1100X is no longer sold new.
Want more options? Browse the full Subwoofers rankings.
A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room.
A compact sealed 12 inch subwoofer with punchy deep bass and built in room correction, now discontinued.
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Specifications Side By Side
| Monoprice SW-15 | MartinLogan Dynamo 1100X | |
|---|---|---|
| Price | $499.99 | $1,274.99 Discontinued |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #37 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | 90.6 dB |
| Output SPL at 20 Hz | 101.2 dB | 95.9 dB |
| Output SPL at 25 Hz | 106.3 dB | 100.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 106.5 dB |
| Output SPL at 40 Hz | 116.0 dB | 111.4 dB |
| Output SPL at 50 Hz | 120.2 dB | 115.1 dB |
| Output SPL at 63 Hz | 120.5 dB | 118.7 dB |
| Output SPL at 80 Hz | 119.5 dB | 120.7 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 116.5 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 17.1”H x 15”W x 15.6”D (434.3 x 381.0 x 396.2 mm) |
| Weight | 66.1 lbs (30.0 kg) | 46.1 lbs (20.9 kg) |
| Warranty | 1 | 3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Matthew J Poes |
| Frequency Response | 30-150Hz (-10dB) | 22-200Hz, ±3dB |
| Amplifier Power | 600W RMS / 800W peak | 650W RMS / 1300W peak |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | XLR (LFE), RCA (LFE), RCA (stereo), speaker-level |
| Drivers | 15” (381mm) driver | 12” (305mm) driver |
| Output SPL at 100 Hz | - | 121.3 dB |
| Output SPL at 125 Hz | - | 120.7 dB |
| 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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