Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality, rated 4.1/5, at $499.99; the ELAC PS350 ranks #121, rated 3.6/5, and costs $1,698, so there is little reason to consider the other one.
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. Watch for: Budget-tier design, ported room gain dependency, 66.1 lbs (30 kg) mid-size, and limited dynamic headroom.
What the ELAC PS350 does well: A 12 inch ported subwoofer with automatic room EQ and a phone app that can manage several subwoofers together. Watch for: Output drops quickly below 31.5Hz, reaching 99.4dB at 25Hz and 85.5dB at 20Hz, so the deepest movie effects are weak despite the 24Hz rating.
Buy the Monoprice SW-15. It is rated higher for sound quality than the ELAC PS350 and costs less, so only choose the other one for a particular feature it does better.
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 12 inch ported subwoofer with automatic room EQ and a phone app that can manage several subwoofers together.
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Specifications Side By Side
| Monoprice SW-15 | ELAC PS350 | |
|---|---|---|
| Price | $499.99 | $1,698.00 |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #121 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, bottom |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 85.5 dB |
| Output SPL at 25 Hz | 106.3 dB | 99.4 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 105.4 dB |
| Output SPL at 40 Hz | 116.0 dB | 111.4 dB |
| Output SPL at 50 Hz | 120.2 dB | 112.5 dB |
| Output SPL at 63 Hz | 120.5 dB | 114.1 dB |
| Output SPL at 80 Hz | 119.5 dB | 110.9 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 112.2 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 17.2”H x 16.4”W x 16.4”D (436.9 x 415.8 x 417.8 mm) |
| Weight | 66.1 lbs (30.0 kg) | 48.1 lbs (21.8 kg) |
| Warranty | 1 | 3/1 |
| Cabinet Color | black | black |
| Country | United States | Germany |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | 24-150Hz |
| Amplifier Power | 600W RMS / 800W peak | 350W 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 |
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