Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality, rated 4.1/5, at $499.99; the Bose Lifestyle Ultra Subwoofer ranks #50, rated 3.8/5, and costs $849, so there is not much of a tradeoff to weigh.
What the Monoprice SW-15 does well: 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.
Why pick the Bose Lifestyle Ultra Subwoofer: A compact ported 12 inch subwoofer with solid output for a mid-size room. The tradeoff: The 326.8H x 294.7W x 294.7D mm cabinet and 33.7 lbs (15.3 kg) mass still need deliberate placement and calibration.
Buy the Monoprice SW-15. It is rated higher for sound quality than the Bose Lifestyle Ultra Subwoofer and costs less, which makes it the one to get unless you need something the other one 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 compact ported 12 inch subwoofer with solid output for a mid-size room.
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 | Bose Lifestyle Ultra Subwoofer | |
|---|---|---|
| Price | $499.99 | $849.00 |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #50 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 90.6 dB |
| Output SPL at 25 Hz | 106.3 dB | 102.5 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 108.8 dB |
| Output SPL at 40 Hz | 116.0 dB | 113.9 dB |
| Output SPL at 50 Hz | 120.2 dB | 115.8 dB |
| Output SPL at 63 Hz | 120.5 dB | 116.6 dB |
| Output SPL at 80 Hz | 119.5 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 115.4 dB (avg of 3/4 bands) |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 12.9”H x 11.6”W x 11.6”D (326.8 x 294.7 x 294.7 mm) |
| Weight | 66.1 lbs (30.0 kg) | 33.7 lbs (15.3 kg) |
| Warranty | 1 | 1 |
| Cabinet Color | black | - |
| Country | United States | Thailand |
| 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 | 12” (305mm) driver |
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