Short answer: the Rythmik LV12 on measured sound quality, the Monoprice SW-15 on price. The Rythmik LV12 ranks #8 of 212 subwoofers, rated 4.2/5, at $899. The Monoprice SW-15 ranks #14, rated 4.1/5, at $499.99, $399.01 cheaper.
Why pick 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 Rythmik LV12: A great value 12 inch servo controlled subwoofer with deep bass and switchable tuning for depth or loudness. The catch: At 495 by 381 by 470mm and 69 lbs (31.3 kg) it is a large, heavy cabinet for a 12 inch subwoofer.
Buy the Monoprice SW-15 if the price matters more than sound quality. Buy the Rythmik LV12 if sound quality matters more than the price.
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 great value 12 inch servo controlled subwoofer with deep bass and switchable tuning for depth or loudness.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Monoprice SW-15 | Rythmik LV12 | |
|---|---|---|
| Price | $499.99 | $899 |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #8 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, front |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 107.7 dB |
| Output SPL at 25 Hz | 106.3 dB | 113.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 116.6 dB |
| Output SPL at 40 Hz | 116.0 dB | 120.2 dB |
| Output SPL at 50 Hz | 120.2 dB | 120.4 dB |
| Output SPL at 63 Hz | 120.5 dB | 121.2 dB |
| Output SPL at 80 Hz | 119.5 dB | 119.3 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 120.3 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 19.5”H x 15”W x 18.5”D (495.3 x 381.0 x 469.9 mm) |
| Weight | 66.1 lbs (30.0 kg) | 69 lbs (31.3 kg) |
| Warranty | 1 | 5/3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | 19Hz-300Hz |
| Amplifier Power | 600W RMS / 800W peak | 300W 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 16 Hz | - | 101.0 dB |
Related Speaker Comparisons
How Rythmik LV12 compares with other leading options: