Short answer: the SVS SB-2000 Pro for power and headroom, the Klipsch R-121SW for price. The SB-2000 Pro ranks #58 of 146 medium subwoofers at $899, with a sealed 12-inch driver and a 550W RMS, 1500W peak Sledge amplifier. The R-121SW costs $249, and its 12-inch spun-copper driver with 200W RMS delivers controlled, musical bass with minimal distortion.
Buy the Klipsch R-121SW if the price is the priority over sound quality, or the SVS SB-2000 Pro if sound quality is the priority over the price.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Klipsch R-121SW | SVS SB-2000 Pro | |
|---|---|---|
| Price | $249.00 | $899.00 each |
| Ranked | #96 of 146 in Medium Home Subwoofers (30-75 lbs) | #58 of 146 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, rear | sealed |
| Output SPL at 15 Hz | 90.7 dB | - |
| Output SPL at 20 Hz | 96.0 dB | 102.5 dB |
| Output SPL at 25 Hz | 98.4 dB | 113.3 dB |
| Output SPL at 31.5 Hz | 102.3 dB | - |
| Output SPL at 40 Hz | 108.2 dB | 114.0 dB |
| Output SPL at 50 Hz | 112.4 dB | 114.1 dB |
| Output SPL at 63 Hz | 112.9 dB | 115.9 dB |
| Output SPL at 80 Hz | 111.3 dB | 115.0 dB |
| Output SPL at 100 Hz | 109.9 dB | - |
| Output SPL at 125 Hz | 108.3 dB | - |
| CEA-2010-A Average (40-80Hz) | 111.2 dB | 114.7 dB |
| Dimensions | 16.6”H x 16”W x 19.7”D (421.6 x 406.4 x 500.4 mm) | 14.6”H x 14.2”W x 15.6”D (370.8 x 360.7 x 396.2 mm) |
| Weight | 35.1 lbs (15.9 kg) | 38.6 lbs (17.5 kg) |
| Warranty | 5/2 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Erin’s Audio Corner |
| Amplifier Power | 200W RMS | 550W RMS, 1500W peak |
| Frequency Response | 28-120Hz | 19-240Hz ±3dB |
| Drivers | 12” (305mm) driver | 12” (305mm) driver |
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- SVS SB-2000 Pro vs Power Sound Audio (PSA) XV15
Prices on this page were last checked September 30, 2026 at 2:57 PM 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
Klipsch R-121SW: $249.00 Amazon eBay
Pros: 12-inch spun-copper driver with 200W RMS delivers controlled, musical bass with minimal distortion. Front-firing design maximizes placement flexibility. Excellent value with exceptional bang-for-buck.
Full Klipsch R-121SW review and specifications →
| Amplifier Power | 200W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 111.2 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 16.6”H x 16”W x 19.7”D (421.6 x 406.4 x 500.4 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | ported, rear |
| Frequency Response | 28-120Hz |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 90.7 dB |
| Output SPL at 20 Hz | 96.0 dB |
| Output SPL at 25 Hz | 98.4 dB |
| Output SPL at 31.5 Hz | 102.3 dB |
| Output SPL at 40 Hz | 108.2 dB |
| Output SPL at 50 Hz | 112.4 dB |
| Output SPL at 63 Hz | 112.9 dB |
| Output SPL at 80 Hz | 111.3 dB |
| Output SPL at 100 Hz | 109.9 dB |
| Output SPL at 125 Hz | 108.3 dB |
| Warranty | 5/2 |
| 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.
- Head-to-Head Comparisons
- Klipsch R-121SW vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- Klipsch R-121SW vs Monoprice Monolith M-10 V2
- Klipsch R-121SW vs Monoprice SSW-10
- Klipsch R-121SW vs Klipsch R-12SW
- Klipsch R-121SW vs Kef KC62
- Klipsch R-121SW vs SVS PB-1000 PRO
- Klipsch R-121SW vs JBL HDI-1200P
- Klipsch R-121SW vs Power Sound Audio (PSA) XS15SE
- See all 18 comparisons
SVS SB-2000 Pro: $899.00 each Amazon eBay
Older models: the SVS SB-2000 (ranked higher, rated 3.9/5) and the SVS SB12-Plus (ranked lower, rated 3.6/5).
Pros: A compact sealed 12-inch subwoofer, about 37cm on each side, with a 550W RMS (1,500W peak) Sledge amplifier and SVS’s smartphone app for volume, crossover, phase, room gain compensation and parametric EQ from the listening seat. Erin’s Audio Corner measured a 114.7dB CEA-2010-A average from 40 to 80Hz, and SVS rates it at 19-240Hz within 3dB.
Cons: Output is modest next to larger or ported subwoofers: Erin’s Audio Corner measured about 102.5dB at 20Hz, and he judged the SB-3000, about $200 more, the better value for its considerably higher output. Sealed designs this size run out of headroom sooner in large rooms.
Full SVS SB-2000 Pro review and specifications →
| Amplifier Power | 550W RMS, 1500W peak |
|---|---|
| CEA-2010-A Average (40-80Hz) | 114.7 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 14.6”H x 14.2”W x 15.6”D (370.8 x 360.7 x 396.2 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 19-240Hz ±3dB |
| Measurement Source | Erin’s Audio Corner |
| Output SPL at 20 Hz | 102.5 dB |
| Output SPL at 25 Hz | 113.3 dB |
| Output SPL at 40 Hz | 114.0 dB |
| Output SPL at 50 Hz | 114.1 dB |
| Output SPL at 63 Hz | 115.9 dB |
| Output SPL at 80 Hz | 115.0 dB |
| Warranty | 5 |
| Weight | 38.6 lbs (17.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- SVS SB-2000 Pro vs BIC America PL-300
- SVS SB-2000 Pro vs Monoprice SSW-10
- SVS SB-2000 Pro vs SVS PB-1000 PRO
- SVS SB-2000 Pro vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- SVS SB-2000 Pro vs JBL HDI-1200P
- SVS SB-2000 Pro vs Power Sound Audio (PSA) XS15SE
- SVS SB-2000 Pro vs Rythmik F12
- SVS SB-2000 Pro vs Klipsch SPL-120
- See all 22 comparisons