Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality, rated 4.1/5, at $499.99; the Sigberg Audio 10D ranks #36, rated 3.9/5, and costs $4,067.37, so there is not much of a tradeoff to weigh.
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.
What the Sigberg Audio 10D does well: A small dual 10 inch sealed subwoofer whose opposed drivers cancel vibration, with parametric EQ and strong output for its size. The tradeoff: Sealed output falls to 96.0dB at 20Hz and 91.5dB at 15Hz, so it does not shake the room in the deepest octave.
Buy the Monoprice SW-15. It is rated higher for sound quality than the Sigberg Audio 10D and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Subwoofers rankings.
A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room.
A small dual 10 inch sealed subwoofer whose opposed drivers cancel vibration, with parametric EQ and strong output for its size.
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 | Sigberg Audio 10D | |
|---|---|---|
| Price | $499.99 | $4,067.37 |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #36 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | 91.5 dB |
| Output SPL at 20 Hz | 101.2 dB | 96.0 dB |
| Output SPL at 25 Hz | 106.3 dB | 101.0 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 106.2 dB |
| Output SPL at 40 Hz | 116.0 dB | 112.6 dB |
| Output SPL at 50 Hz | 120.2 dB | 116.3 dB |
| Output SPL at 63 Hz | 120.5 dB | 119.4 dB |
| Output SPL at 80 Hz | 119.5 dB | 119.0 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 116.8 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 14.6”H x 14.2”W x 16.1”D (370.1 x 359.9 x 410.0 mm) |
| Weight | 66.1 lbs (30.0 kg) | 59.5 lbs (27.0 kg) |
| Warranty | 1 | 5 |
| Cabinet Color | black | black, white |
| Country | United States | Norway |
| Measurement Source | Audioholics | Audioholics |
| Frequency Response | 30-150Hz (-10dB) | 23-250Hz, ±3dB |
| Amplifier Power | 600W RMS / 800W peak | 500W RMS |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | XLR (balanced, in plus through), RCA (stereo), speaker-level |
| Drivers | 15” (381mm) driver | 2x 10” (254mm) driver |
| Output SPL at 12.5 Hz | - | 86.0 dB |
| Output SPL at 100 Hz | - | 119.3 dB |
| Output SPL at 125 Hz | - | 118.4 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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