Short answer: the SVS SB-2000 for power and headroom, the Klipsch R-121SW for price. The SB-2000 ranks #34 of 145 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.
What the Klipsch R-121SW gets right: 12-inch spun-copper driver with 200W RMS delivers controlled, musical bass with minimal distortion.
On the SVS SB-2000 side: Sealed 12” with 550W RMS, 1500W peak Sledge amplifier.
Buy the Klipsch R-121SW if the price is the priority over sound quality, or the SVS SB-2000 if sound quality is the priority over the price.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Klipsch R-121SW | SVS SB-2000 | |
|---|---|---|
| Price | $249.00 | $899.00 |
| Ranked | #95 of 145 in Medium Home Subwoofers (30-75 lbs) | #34 of 145 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 | 101.1 dB |
| Output SPL at 25 Hz | 98.4 dB | 106.1 dB |
| Output SPL at 31.5 Hz | 102.3 dB | 111.8 dB |
| Output SPL at 40 Hz | 108.2 dB | 117.3 dB |
| Output SPL at 50 Hz | 112.4 dB | 117.8 dB |
| Output SPL at 63 Hz | 112.9 dB | 118.2 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 | - |
| CEA-2010-A Average (40-80Hz) | 111.2 dB | 117.8 dB (avg of 3/4 bands) |
| 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 15.4"D (370.8 x 360.7 x 391.2 mm) |
| Weight | 35.1 lbs (15.9 kg) | 34.8 lbs (15.8 kg) |
| Warranty | 5/2 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Amplifier Power | 200W RMS | 500W RMS |
| Frequency Response | 28-120Hz | 19-220Hz |
| Drivers | 12" (305mm) driver | 12" (305mm) driver |
Related Speaker Comparisons
How SVS SB-2000 compares with other leading options:
- JTR Speakers Captivator 212PRO vs SVS SB-2000
- MartinLogan Dynamo 1600X vs SVS SB-2000
- HSU Research ULS-15 MK2 vs SVS SB-2000
- Monoprice SW-12 vs SVS SB-2000
- SVS SB-2000 vs Power Sound Audio (PSA) XV15
Prices on this page were last checked September 23, 2026 at 11:24 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 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
- Klipsch R-121SW vs Rythmik F12
- See all 17 comparisons
SVS SB-2000: $899.00 Amazon eBay
Pros: Sealed 12” with 550W RMS, 1500W peak Sledge amplifier. Rich, full bass in compact 15-cube cabinet. Full smartphone app control with parametric EQ. Versatile for movies and 2-channel audio.
Full SVS SB-2000 review and specifications →
| Amplifier Power | 500W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 117.8 dB (avg of 3/4 bands) |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 14.6"H x 14.2"W x 15.4"D (370.8 x 360.7 x 391.2 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 19-220Hz |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 101.1 dB |
| Output SPL at 25 Hz | 106.1 dB |
| Output SPL at 31.5 Hz | 111.8 dB |
| Output SPL at 40 Hz | 117.3 dB |
| Output SPL at 50 Hz | 117.8 dB |
| Output SPL at 63 Hz | 118.2 dB |
| Warranty | 5 |
| Weight | 34.8 lbs (15.8 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