Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality, rated 4.1/5, at $499.99; the Sony Bravia Theater Sub 9 ranks #84, rated 3.7/5, and costs $898, so there is not much of a tradeoff to weigh.
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 catch: Budget-tier design, ported room gain dependency, 66.1 lbs (30 kg) mid-size, and limited dynamic headroom.
The case for the Sony Bravia Theater Sub 9: A sealed dual 8 inch subwoofer with decent output for a mid-size room. Watch for: The 390.0H x 400.0W x 350.0D mm cabinet and 51.4 lbs (23.3 kg) mass still need deliberate placement.
Buy the Monoprice SW-15. It is rated higher for sound quality than the Sony Bravia Theater Sub 9 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
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 sealed dual 8 inch subwoofer with decent output for a mid-size room.
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Specifications Side By Side
| Monoprice SW-15 | Sony Bravia Theater Sub 9 | |
|---|---|---|
| Price | $499.99 | $898.00 |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #84 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 98.0 dB |
| Output SPL at 25 Hz | 106.3 dB | 103.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 109.1 dB |
| Output SPL at 40 Hz | 116.0 dB | 109.9 dB |
| Output SPL at 50 Hz | 120.2 dB | 114.0 dB |
| Output SPL at 63 Hz | 120.5 dB | 114.7 dB |
| Output SPL at 80 Hz | 119.5 dB | 112.8 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 112.8 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 15.4”H x 15.7”W x 13.8”D (390.0 x 400.0 x 350.0 mm) |
| Weight | 66.1 lbs (30.0 kg) | 51.4 lbs (23.3 kg) |
| Warranty | 1 | 1 |
| Cabinet Color | black | - |
| Country | United States | Vietnam |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | - |
| Amplifier Power | 600W RMS / 800W peak | - |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | - |
| Drivers | 15” (381mm) driver | (2) 8” (200mm) drivers |
| Output SPL at 16 Hz | - | 85.1 dB |
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