Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the SVS SB12-NSD ranks #113 and costs $899, so there is little reason to consider the other one.
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 SVS SB12-NSD offers: 12-inch sealed with 400W RMS. Compact 109.7dB average output with impressive weight and control. Aluminum cone driver with composite dust cap. Low distortion <10% THD above 40Hz. Talented bass beast at affordable price. Watch for: No detailed measurement caveats are currently recorded.
Buy the Monoprice SW-15. It ranks higher for sound quality than the SVS SB12-NSD and costs less, so there is no real case for the other one.
Skip the SVS SB12-NSD if sound quality matters to you. It ranks near the bottom of the 145 subwoofers.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Monoprice SW-15 | SVS SB12-NSD | |
|---|---|---|
| Price | $374.99 | $899 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #113 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | 90.7 dB |
| Output SPL at 20 Hz | 101.2 dB | 94.9 dB |
| Output SPL at 25 Hz | 106.3 dB | 99.3 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 104.0 dB |
| Output SPL at 40 Hz | 116.0 dB | 107.6 dB |
| Output SPL at 50 Hz | 120.2 dB | 109.4 dB |
| Output SPL at 63 Hz | 120.5 dB | 110.6 dB |
| Output SPL at 80 Hz | 119.5 dB | 111.2 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 109.7 dB |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 14.2"H x 14.2"W x 14.2"D (360.7 x 360.7 x 360.7 mm) |
| Weight | 66.1 lbs (30.0 kg) | 35.1 lbs (15.9 kg) |
| Warranty | 1 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Audioholics |
| Frequency Response | 30-150Hz (-10dB) | 23-270Hz |
| Amplifier Power | 600W RMS / 800W peak | 400W 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 12.5 Hz | - | 84.1 dB |
| Output SPL at 100 Hz | - | 111.5 dB |
| Output SPL at 125 Hz | - | 111.5 dB |
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 16, 2026 at 12:41 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
- Monoprice SW-15 vs Power Sound Audio (PSA) XV15SEICE-BASE
- Monoprice SW-15 vs SVS SB-3000
- Monoprice SW-15 vs Power Sound Audio (PSA) XS15
- 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
- Monoprice SW-15 vs Klipsch SPL-120
- See all 109 comparisons
SVS SB12-NSD: $899 eBay
Pros: 12-inch sealed with 400W RMS. Compact 109.7dB average output with impressive weight and control. Aluminum cone driver with composite dust cap. Low distortion <10% THD above 40Hz. Talented bass beast at affordable price.
Full SVS SB12-NSD review and specifications →
| Amplifier Power | 400W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 109.7 dB |
| Country | United States |
| Dimensions | 14.2"H x 14.2"W x 14.2"D (360.7 x 360.7 x 360.7 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 23-270Hz |
| Measurement Source | Audioholics |
| Output SPL at 12.5 Hz | 84.1 dB |
| Output SPL at 15 Hz | 90.7 dB |
| Output SPL at 20 Hz | 94.9 dB |
| Output SPL at 25 Hz | 99.3 dB |
| Output SPL at 31.5 Hz | 104.0 dB |
| Output SPL at 40 Hz | 107.6 dB |
| Output SPL at 50 Hz | 109.4 dB |
| Output SPL at 63 Hz | 110.6 dB |
| Output SPL at 80 Hz | 111.2 dB |
| Output SPL at 100 Hz | 111.5 dB |
| Output SPL at 125 Hz | 111.5 dB |
| Warranty | 5 |
| Weight | 35.1 lbs (15.9 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.