Short answer: the Monoprice SW-15 if sound quality matters most, the Monoprice 12in 150-Watt Powered if price matters most. The Monoprice SW-15 ranks #13 of 145 subwoofers at $374.99. The Monoprice 12in 150-Watt Powered ranks #89 at $140, $234.99 cheaper.
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 Monoprice 12in 150-Watt Powered offers: 12-inch ported with 150W RMS delivers extraordinary output and value under $140. Excellent performance reaches 111.7dB average. Easy setup at ultra-budget price point. Watch for: No detailed measurement caveats are currently recorded.
Buy the Monoprice SW-15 when sound quality outweighs the price for you, and the Monoprice 12in 150-Watt Powered when the price outweighs sound quality instead.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Monoprice SW-15 | Monoprice 12in 150-Watt Powered | |
|---|---|---|
| Price | $374.99 | $140 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #89 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 | 90.2 dB |
| Output SPL at 25 Hz | 106.3 dB | 89.8 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 99.7 dB |
| Output SPL at 40 Hz | 116.0 dB | 105.1 dB |
| Output SPL at 50 Hz | 120.2 dB | 110.6 dB |
| Output SPL at 63 Hz | 120.5 dB | 115.7 dB |
| Output SPL at 80 Hz | 119.5 dB | 115.4 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 111.7 dB |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 17"H x 17.3"W x 17.5"D (431.8 x 439.4 x 444.5 mm) |
| Weight | 66.1 lbs (30.0 kg) | 53.8 lbs (24.4 kg) |
| Warranty | 1 | - |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | ErinsAudioCorner |
| Frequency Response | 30-150Hz (-10dB) | 25-250Hz |
| Amplifier Power | 600W RMS / 800W peak | 150W 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 100 Hz | - | 114.2 dB |
| Output SPL at 125 Hz | - | 113.3 dB |
Related Speaker Comparisons
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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 Power Sound Audio (PSA) XV15
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Monoprice 12in 150-Watt Powered: $140 eBay
Pros: 12-inch ported with 150W RMS delivers extraordinary output and value under $140. Excellent performance reaches 111.7dB average. Easy setup at ultra-budget price point.
Notes: Product # 9723
Full Monoprice 12in 150-Watt Powered review and specifications →
| Amplifier Power | 150W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 111.7 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 17"H x 17.3"W x 17.5"D (431.8 x 439.4 x 444.5 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 25-250Hz |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 20 Hz | 90.2 dB |
| Output SPL at 25 Hz | 89.8 dB |
| Output SPL at 31.5 Hz | 99.7 dB |
| Output SPL at 40 Hz | 105.1 dB |
| Output SPL at 50 Hz | 110.6 dB |
| Output SPL at 63 Hz | 115.7 dB |
| Output SPL at 80 Hz | 115.4 dB |
| Output SPL at 100 Hz | 114.2 dB |
| Output SPL at 125 Hz | 113.3 dB |
| Weight | 53.8 lbs (24.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by ErinsAudioCorner; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons