Short answer: the Power Sound Audio (PSA) XV15 on measured sound quality, the Klipsch R-121SW on price. The Power Sound Audio (PSA) XV15 ranks #9 of 145 subwoofers at $1995. The Klipsch R-121SW ranks #95 at $249, $1746 cheaper.
What the Klipsch R-121SW offers: 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. Watch for: No detailed measurement caveats are currently recorded.
What the Power Sound Audio (PSA) XV15 offers: 15-inch ported downfirer with 500W delivers crisp detailed bass digging deep into lowest frequencies. 119.5dB output plays loud clean at 115dB peaks with no distortion. USA-built with durable finish. Watch for: No detailed measurement caveats are currently recorded.
Buy the Klipsch R-121SW when the price outweighs sound quality for you, and the Power Sound Audio (PSA) XV15 when sound quality outweighs the price instead.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Klipsch R-121SW | Power Sound Audio (PSA) XV15 | |
|---|---|---|
| Price | $249.00 | $1995 |
| Ranked | #95 of 145 in Medium Home Subwoofers (30-75 lbs) | #9 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, rear | ported, bottom |
| Output SPL at 15 Hz | 90.7 dB | - |
| Output SPL at 20 Hz | 96.0 dB | 110.2 dB |
| Output SPL at 25 Hz | 98.4 dB | 110.2 dB |
| Output SPL at 31.5 Hz | 102.3 dB | 110.2 dB |
| Output SPL at 40 Hz | 108.2 dB | 119.5 dB |
| Output SPL at 50 Hz | 112.4 dB | 119.5 dB |
| Output SPL at 63 Hz | 112.9 dB | 119.5 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 | 119.5 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) | 23"H x 17"W x 22"D (584.2 x 431.8 x 558.8 mm) |
| Weight | 35.1 lbs (15.9 kg) | 75 lbs (34.0 kg) |
| Warranty | 5/2 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Amplifier Power | 200W RMS | 500W RMS / 1000W peak |
| Frequency Response | 28-120Hz | 21-200Hz |
| Drivers | 12" (305mm) driver | 15" (381mm) driver |
| Inputs | - | Stereo line level and speaker level |
Related Speaker Comparisons
How Power Sound Audio (PSA) XV15 compares with other leading options:
- JTR Speakers Captivator 212PRO vs Power Sound Audio (PSA) XV15
- MartinLogan Dynamo 1600X vs Power Sound Audio (PSA) XV15
- HSU Research ULS-15 MK2 vs Power Sound Audio (PSA) XV15
- Monoprice SW-12 vs Power Sound Audio (PSA) XV15
- Paradigm Defiance X12 vs Power Sound Audio (PSA) XV15
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
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 SVS SB-2000
- Klipsch R-121SW vs JBL HDI-1200P
- Klipsch R-121SW vs Power Sound Audio (PSA) XS15SE
- See all 17 comparisons
Power Sound Audio (PSA) XV15: $1995 eBay
Pros: 15-inch ported downfirer with 500W delivers crisp detailed bass digging deep into lowest frequencies. 119.5dB output plays loud clean at 115dB peaks with no distortion. USA-built with durable finish.
Full Power Sound Audio (PSA) XV15 review and specifications →
| Amplifier Power | 500W RMS / 1000W peak |
|---|---|
| CEA-2010-A Average (40-80Hz) | 119.5 dB (avg of 3/4 bands) |
| Country | United States |
| Dimensions | 23"H x 17"W x 22"D (584.2 x 431.8 x 558.8 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 21-200Hz |
| Inputs | Stereo line level and speaker level |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 110.2 dB |
| Output SPL at 25 Hz | 110.2 dB |
| Output SPL at 31.5 Hz | 110.2 dB |
| Output SPL at 40 Hz | 119.5 dB |
| Output SPL at 50 Hz | 119.5 dB |
| Output SPL at 63 Hz | 119.5 dB |
| Warranty | 5 |
| Weight | 75 lbs (34.0 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
- Power Sound Audio (PSA) XV15 vs Paradigm Defiance X12
- Power Sound Audio (PSA) XV15 vs Power Sound Audio (PSA) XV15-BASE
- Power Sound Audio (PSA) XV15 vs Monoprice SW-15
- Power Sound Audio (PSA) XV15 vs Monoprice SW-12
- Power Sound Audio (PSA) XV15 vs SVS SB-3000
- Power Sound Audio (PSA) XV15 vs HSU Research ULS-15 MK2
- Power Sound Audio (PSA) XV15 vs MartinLogan Dynamo 1600X
- Power Sound Audio (PSA) XV15 vs JTR Speakers Captivator 212PRO
- See all 12 comparisons