Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the Paradigm Defiance X10 ranks #75 and costs $985.97, 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 Paradigm Defiance X10 offers: 10-inch ported with 300W RMS and ARC room correction provides massive SPL with precision control and low distortion. Active Ridge Technology (ART) surround allows greater excursion. Fine-tune bass from chair with app control. Watch for: No detailed measurement caveats are currently recorded.
Buy the Monoprice SW-15. It ranks higher for sound quality than the Paradigm Defiance X10 and costs less, so the other one has nothing left to offer.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Monoprice SW-15 | Paradigm Defiance X10 | |
|---|---|---|
| Price | $374.99 | $985.97 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #75 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, bottom |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 82.7 dB |
| Output SPL at 25 Hz | 106.3 dB | 98.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 107.4 dB |
| Output SPL at 40 Hz | 116.0 dB | 110.5 dB |
| Output SPL at 50 Hz | 120.2 dB | 113.0 dB |
| Output SPL at 63 Hz | 120.5 dB | 116.6 dB |
| Output SPL at 80 Hz | 119.5 dB | 115.5 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 113.9 dB |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 16.4"H x 15"W x 16.4"D (417.3 x 381.0 x 417.3 mm) |
| Weight | 66.1 lbs (30.0 kg) | 42.1 lbs (19.1 kg) |
| Warranty | 1 | 3 |
| Cabinet Color | black | black |
| Country | United States | Canada |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | 24-240Hz |
| 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 | 10" (254mm) driver |
Related Speaker Comparisons
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- Monoprice SW-15 vs PSB Speakers SubSeries 450
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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
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- 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
Paradigm Defiance X10: $985.97 eBay
Pros: 10-inch ported with 300W RMS and ARC room correction provides massive SPL with precision control and low distortion. Active Ridge Technology (ART) surround allows greater excursion. Fine-tune bass from chair with app control.
Full Paradigm Defiance X10 review and specifications →
| Amplifier Power | 300W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 113.9 dB |
| Cabinet Color | black |
| Country | Canada |
| Dimensions | 16.4"H x 15"W x 16.4"D (417.3 x 381.0 x 417.3 mm) |
| Drivers | 10" (254mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 24-240Hz |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 82.7 dB |
| Output SPL at 25 Hz | 98.2 dB |
| Output SPL at 31.5 Hz | 107.4 dB |
| Output SPL at 40 Hz | 110.5 dB |
| Output SPL at 50 Hz | 113.0 dB |
| Output SPL at 63 Hz | 116.6 dB |
| Output SPL at 80 Hz | 115.5 dB |
| Warranty | 3 |
| Weight | 42.1 lbs (19.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons