Short answer: the Power Sound Audio (PSA) XS15SE for better sound quality, the Klipsch R-121SW for the lower price. The Power Sound Audio (PSA) XS15SE ranks #22 of 145 subwoofers at $1499. The Klipsch R-121SW ranks #95 at $249, $1250 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) XS15SE offers: 15-inch sealed driver delivers 117.8dB CEA-2010-A average in a compact sealed enclosure. Watch for: No detailed measurement caveats are currently recorded.
Buy the Klipsch R-121SW if the price matters more than sound quality. Buy the Power Sound Audio (PSA) XS15SE if sound quality matters more than the price.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Klipsch R-121SW | Power Sound Audio (PSA) XS15SE | |
|---|---|---|
| Price | $249.00 | $1499 |
| Ranked | #95 of 145 in Medium Home Subwoofers (30-75 lbs) | #22 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, rear | sealed |
| Output SPL at 15 Hz | 90.7 dB | 96.5 dB |
| Output SPL at 20 Hz | 96.0 dB | 100.6 dB |
| Output SPL at 25 Hz | 98.4 dB | 107.2 dB |
| Output SPL at 31.5 Hz | 102.3 dB | 110.6 dB |
| Output SPL at 40 Hz | 108.2 dB | 114.7 dB |
| Output SPL at 50 Hz | 112.4 dB | 117.9 dB |
| Output SPL at 63 Hz | 112.9 dB | 119.1 dB |
| Output SPL at 80 Hz | 111.3 dB | 119.4 dB |
| Output SPL at 100 Hz | 109.9 dB | 119.3 dB |
| Output SPL at 125 Hz | 108.3 dB | 118.6 dB |
| CEA-2010-A Average (40-80Hz) | 111.2 dB | 117.8 dB |
| Dimensions | 16.6"H x 16"W x 19.7"D (421.6 x 406.4 x 500.4 mm) | 19.5"H x 17"W x 18"D (495.3 x 431.8 x 457.2 mm) |
| Weight | 35.1 lbs (15.9 kg) | 67 lbs (30.4 kg) |
| Warranty | 5/2 | 5 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Amplifier Power | 200W RMS | 550W RMS / 1650W peak |
| Frequency Response | 28-120Hz | 23-200Hz, ±3dB |
| Drivers | 12" (305mm) driver | 15" (381mm) driver |
| Output SPL at 12.5 Hz | - | 91.9 dB |
Related Speaker Comparisons
How Power Sound Audio (PSA) XS15SE compares with other leading options:
- JTR Speakers Captivator 212PRO vs Power Sound Audio (PSA) XS15SE
- MartinLogan Dynamo 1600X vs Power Sound Audio (PSA) XS15SE
- HSU Research ULS-15 MK2 vs Power Sound Audio (PSA) XS15SE
- Monoprice SW-12 vs Power Sound Audio (PSA) XS15SE
- Monoprice SW-15 vs Power Sound Audio (PSA) XS15SE
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 Rythmik F12
- See all 17 comparisons
Power Sound Audio (PSA) XS15SE: $1499 eBay
Pros: 15-inch sealed driver delivers 117.8dB CEA-2010-A average in a compact sealed enclosure.
Full Power Sound Audio (PSA) XS15SE review and specifications →
| Amplifier Power | 550W RMS / 1650W peak |
|---|---|
| CEA-2010-A Average (40-80Hz) | 117.8 dB |
| Country | United States |
| Dimensions | 19.5"H x 17"W x 18"D (495.3 x 431.8 x 457.2 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | sealed |
| Frequency Response | 23-200Hz, ±3dB |
| Measurement Source | Data-bass |
| Output SPL at 12.5 Hz | 91.9 dB |
| Output SPL at 15 Hz | 96.5 dB |
| Output SPL at 20 Hz | 100.6 dB |
| Output SPL at 25 Hz | 107.2 dB |
| Output SPL at 31.5 Hz | 110.6 dB |
| Output SPL at 40 Hz | 114.7 dB |
| Output SPL at 50 Hz | 117.9 dB |
| Output SPL at 63 Hz | 119.1 dB |
| Output SPL at 80 Hz | 119.4 dB |
| Output SPL at 100 Hz | 119.3 dB |
| Output SPL at 125 Hz | 118.6 dB |
| Warranty | 5 |
| Weight | 67 lbs (30.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Power Sound Audio (PSA) XS15SE vs Starke Sound SW15
- Power Sound Audio (PSA) XS15SE vs JBL HDI-1200P
- Power Sound Audio (PSA) XS15SE vs Rythmik F12
- Power Sound Audio (PSA) XS15SE vs Power Sound Audio (PSA) XS15-BASE
- Power Sound Audio (PSA) XS15SE vs Power Sound Audio (PSA) XS15
- Power Sound Audio (PSA) XS15SE vs SVS SB-3000
- Power Sound Audio (PSA) XS15SE vs Monoprice SW-15
- Power Sound Audio (PSA) XS15SE vs SVS SB-2000
- See all 15 comparisons