Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the Sigberg Audio 10D ranks #28 and costs $4067.37, so there is not much of a tradeoff to weigh.
What the Monoprice SW-15 offers: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup. Watch for: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.
What the Sigberg Audio 10D offers: Dual 10-inch sealed with 500W RMS, 116.8dB average. Force-cancelling opposed drivers eliminate vibration. Scan-Speak driver linearity with 9-band parametric EQ. Built-in active limiter. Smallest dual-10 design worldwide. Watch for: No detailed measurement caveats are currently recorded.
Buy the Monoprice SW-15. It ranks higher for sound quality than the Sigberg Audio 10D and costs less, so the other one has nothing left to offer.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Monoprice SW-15 | Sigberg Audio 10D | |
|---|---|---|
| Price | $374.99 | $4,067.37 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #28 of 145 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 | - |
| 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 | - |
| 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 |
| Discontinued | - | No |
Related Speaker Comparisons
How Monoprice SW-15 compares with other leading options:
- JTR Speakers Captivator 212PRO vs Monoprice SW-15
- MartinLogan Dynamo 1600X vs Monoprice SW-15
- HSU Research ULS-15 MK2 vs Monoprice SW-15
- Monoprice SW-15 vs PSB Speakers SubSeries 450
- Monoprice SW-12 vs Monoprice SW-15
Prices on this page were last checked September 14, 2026 at 1:47 AM 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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The Two Speakers In Full
Monoprice SW-15: $374.99 Amazon eBay
Pros: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup.
Cons: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.
Notes: Product # 41499
Full Monoprice SW-15 review and specifications →
| Amplifier Power | 600W RMS / 800W peak |
|---|---|
| CEA-2010-A Average (40-80Hz) | 119.0 dB |
| Cabinet Color | black |
| Country | United States |
| Crossover Frequency | 40-150Hz, 18dB/octave |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 30-150Hz (-10dB) |
| Inputs | Stereo line level and speaker level |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 90.0 dB |
| Output SPL at 20 Hz | 101.2 dB |
| Output SPL at 25 Hz | 106.3 dB |
| Output SPL at 31.5 Hz | 111.2 dB |
| Output SPL at 40 Hz | 116.0 dB |
| Output SPL at 50 Hz | 120.2 dB |
| Output SPL at 63 Hz | 120.5 dB |
| Output SPL at 80 Hz | 119.5 dB |
| Phase Control | 0° or 180° |
| Warranty | 1 |
| Weight | 66.1 lbs (30.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
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- Monoprice SW-15 vs Power Sound Audio (PSA) XV15-BASE
- Monoprice SW-15 vs Paradigm Defiance X12
- Monoprice SW-15 vs Power Sound Audio (PSA) XS15-BASE
- Monoprice SW-15 vs Power Sound Audio (PSA) XV15
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- See all 72 comparisons
Sigberg Audio 10D: $4,067.37 Sigberg Audio eBay
Pros: Dual 10-inch sealed with 500W RMS, 116.8dB average. Force-cancelling opposed drivers eliminate vibration. Scan-Speak driver linearity with 9-band parametric EQ. Built-in active limiter. Smallest dual-10 design worldwide.
Full Sigberg Audio 10D review and specifications →
| Amplifier Power | 500W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 116.8 dB |
| Cabinet Color | black, white |
| Country | Norway |
| Dimensions | 14.6"H x 14.2"W x 16.1"D (370.1 x 359.9 x 410.0 mm) |
| Discontinued | No |
| Drivers | 2x 10" (254mm) driver |
| Enclosure | sealed |
| Frequency Response | 23-250Hz, ±3dB |
| Measurement Source | Audioholics |
| Output SPL at 12.5 Hz | 86.0 dB |
| Output SPL at 15 Hz | 91.5 dB |
| Output SPL at 20 Hz | 96.0 dB |
| Output SPL at 25 Hz | 101.0 dB |
| Output SPL at 31.5 Hz | 106.2 dB |
| Output SPL at 40 Hz | 112.6 dB |
| Output SPL at 50 Hz | 116.3 dB |
| Output SPL at 63 Hz | 119.4 dB |
| Output SPL at 80 Hz | 119.0 dB |
| Output SPL at 100 Hz | 119.3 dB |
| Output SPL at 125 Hz | 118.4 dB |
| Weight | 59.5 lbs (27.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.