Short answer: the Monoprice SW-15. It ranks #13 of 145 subwoofers by sound quality at $374.99; the Sony Bravia Theater Sub 9 ranks #58 and costs $898, 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 Sony Bravia Theater Sub 9 offers: Independent CEA-2010 testing records 98.0 dB at 20 Hz and 112.8 dB through 40-80 Hz. The sealed enclosure with (2) 8” drivers suits a mid-size room. Watch for: The 390.0H x 400.0W x 350.0D mm cabinet and 23.3 kg mass still need deliberate placement.
Buy the Monoprice SW-15. It ranks higher for sound quality than the Sony Bravia Theater Sub 9 and costs less, so there is no real case for the other one.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Monoprice SW-15 | Sony Bravia Theater Sub 9 | |
|---|---|---|
| Price | $374.99 | $898.00 |
| Ranked | #13 of 145 in Medium Home Subwoofers (30-75 lbs) | #58 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 98.0 dB |
| Output SPL at 25 Hz | 106.3 dB | 103.2 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 109.1 dB |
| Output SPL at 40 Hz | 116.0 dB | 109.9 dB |
| Output SPL at 50 Hz | 120.2 dB | 114.0 dB |
| Output SPL at 63 Hz | 120.5 dB | 114.7 dB |
| Output SPL at 80 Hz | 119.5 dB | 112.8 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 112.8 dB |
| Dimensions | 18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm) | 15.4"H x 15.7"W x 13.8"D (390.0 x 400.0 x 350.0 mm) |
| Weight | 66.1 lbs (30.0 kg) | 51.4 lbs (23.3 kg) |
| Warranty | 1 | 1 |
| Cabinet Color | black | - |
| Country | United States | - |
| Measurement Source | Audioholics | Brent Butterworth |
| Frequency Response | 30-150Hz (-10dB) | - |
| Amplifier Power | 600W RMS / 800W peak | - |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | - |
| Drivers | 15" (381mm) driver | (2) 8" (200mm) drivers |
| Output SPL at 16 Hz | - | 85.1 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 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
Sony Bravia Theater Sub 9: $898.00 Amazon eBay
Pros: Independent CEA-2010 testing records 98.0 dB at 20 Hz and 112.8 dB through 40-80 Hz. The sealed enclosure with (2) 8” drivers suits a mid-size room.
Cons: The 390.0H x 400.0W x 350.0D mm cabinet and 23.3 kg mass still need deliberate placement.
Full Sony Bravia Theater Sub 9 review and specifications →
| CEA-2010-A Average (40-80Hz) | 112.8 dB |
|---|---|
| Dimensions | 15.4"H x 15.7"W x 13.8"D (390.0 x 400.0 x 350.0 mm) |
| Drivers | (2) 8" (200mm) drivers |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 16 Hz | 85.1 dB |
| Output SPL at 20 Hz | 98.0 dB |
| Output SPL at 25 Hz | 103.2 dB |
| Output SPL at 31.5 Hz | 109.1 dB |
| Output SPL at 40 Hz | 109.9 dB |
| Output SPL at 50 Hz | 114.0 dB |
| Output SPL at 63 Hz | 114.7 dB |
| Output SPL at 80 Hz | 112.8 dB |
| Warranty | 1 |
| Weight | 51.4 lbs (23.3 kg) |
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.