Short answer: the Rythmik LV12 on measured sound quality, the Monoprice SW-15 on price. The Rythmik LV12 ranks #7 of 145 subwoofers at $899. The Monoprice SW-15 ranks #13 at $374.99, $524.01 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 Rythmik LV12 offers: 12-inch ported with 300W RMS, direct servo control extends 19Hz. Switchable Q settings (19Hz Low/22Hz Med/24Hz High) adjust bass response and loudness. 5-year driver warranty. Phase and crossover controls for flexible integration. Watch for: No detailed measurement caveats are currently recorded.
Buy the Monoprice SW-15 if the price matters more than sound quality. Buy the Rythmik LV12 if sound quality matters more than the price.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Monoprice SW-15 | Rythmik LV12 | |
|---|---|---|
| Price | $374.99 | $899 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #7 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, front |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 107.7 dB |
| Output SPL at 25 Hz | 106.3 dB | 113.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 116.6 dB |
| Output SPL at 40 Hz | 116.0 dB | 120.2 dB |
| Output SPL at 50 Hz | 120.2 dB | 120.4 dB |
| Output SPL at 63 Hz | 120.5 dB | 121.2 dB |
| Output SPL at 80 Hz | 119.5 dB | 119.3 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 120.3 dB |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 19.5"H x 15"W x 18.5"D (495.3 x 381.0 x 469.9 mm) |
| Weight | 66.1 lbs (30.0 kg) | 69 lbs (31.3 kg) |
| Warranty | 1 | 5/3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | 19Hz-300Hz |
| 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 | 12" (305mm) driver |
| Output SPL at 16 Hz | - | 101.0 dB |
Related Speaker Comparisons
How Rythmik LV12 compares with other leading options:
- Monoprice SW-15 vs KRK Systems 12S
- Monoprice SW-15 vs SVS SB-2000
- Monoprice SW-15 vs Bose Lifestyle Ultra Subwoofer
- Monoprice SW-15 vs HSU Research VTF-2 MK4
- Monoprice SW-15 vs Sony Bravia Theater Sub 9
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
- 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 72 comparisons
Rythmik LV12: $899 eBay
Pros: 12-inch ported with 300W RMS, direct servo control extends 19Hz. Switchable Q settings (19Hz Low/22Hz Med/24Hz High) adjust bass response and loudness. 5-year driver warranty. Phase and crossover controls for flexible integration.
Full Rythmik LV12 review and specifications →
| Amplifier Power | 300W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 19.5"H x 15"W x 18.5"D (495.3 x 381.0 x 469.9 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, front |
| Frequency Response | 19Hz-300Hz |
| Measurement Source | Brent Butterworth |
| Output SPL at 16 Hz | 101.0 dB |
| Output SPL at 20 Hz | 107.7 dB |
| Output SPL at 25 Hz | 113.2 dB |
| Output SPL at 31.5 Hz | 116.6 dB |
| Output SPL at 40 Hz | 120.2 dB |
| Output SPL at 50 Hz | 120.4 dB |
| Output SPL at 63 Hz | 121.2 dB |
| Output SPL at 80 Hz | 119.3 dB |
| Warranty | 5/3 |
| Weight | 69 lbs (31.3 kg) |
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.