Short answer: the SVS PB-4000 for better sound quality, the SVS SB-4000 for the lower price. The SVS PB-4000 ranks #53 of 97 subwoofers at $2158.97. The SVS SB-4000 ranks #54 at $1800, $358.97 cheaper.
What the SVS SB-4000 offers: Independent CEA-2010 testing records 98.5 dB at 20 Hz and 120.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13.5” (343mm) driver delivers formidable upper-bass output for movie effects and music. Watch for: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 464.8H x 452.1W x 472.4D mm cabinet and 46.4 kg mass still require deliberate placement and calibration.
What the SVS PB-4000 offers: Independent CEA-2010 testing records 115.3 dB at 20 Hz and 120.3 dB through 40-80 Hz. The ported, front enclosure with 13.5” (343mm) driver with ported design has the headroom for demanding film bass in a large room. Watch for: The 594.4H x 520.7W x 703.6D mm cabinet and 69.5 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Buy the SVS SB-4000 if the price is the priority over sound quality, or the SVS PB-4000 if sound quality is the priority over the price.
Specifications Side By Side
| SVS SB-4000 | SVS PB-4000 | |
|---|---|---|
| Price | $1,800 | $2,158.97 |
| Ranked | #54 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #53 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 20 Hz | 98.5 dB | 115.3 dB |
| Output SPL at 25 Hz | 101.3 dB | 116.3 dB |
| Output SPL at 31.5 Hz | 108.1 dB | 117.8 dB |
| Output SPL at 40 Hz | 116.1 dB | 119.8 dB |
| Output SPL at 50 Hz | 121.1 dB | 121.7 dB |
| Output SPL at 63 Hz | 123.0 dB | 120.7 dB |
| CEA-2010-A Average (40-80Hz) | 120.1 dB (avg of 3/4 bands) | 120.3 dB |
| Dimensions | 18.3"H x 17.8"W x 18.6"D (464.8 x 452.1 x 472.4 mm) | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Weight | 102.3 lbs / 46.4 kg | 153.2 lbs / 69.5 kg |
| Warranty | 5 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Brian Kahn | Audioholics |
| Drivers | 13.5" (343mm) driver | 13.5" (343mm) driver with ported design |
| Output SPL at 15 Hz | - | 102.1 dB |
| Output SPL at 80 Hz | - | 119.2 dB |
| Output SPL at 100 Hz | - | 118.1 dB |
| Output SPL at 125 Hz | - | 117.5 dB |
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Prices on this page were last checked September 8, 2026 at 6:02 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
SVS SB-4000: $1,800 eBay
Pros: Independent CEA-2010 testing records 98.5 dB at 20 Hz and 120.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13.5” (343mm) driver delivers formidable upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 464.8H x 452.1W x 472.4D mm cabinet and 46.4 kg mass still require deliberate placement and calibration.
Full SVS SB-4000 review and specifications →
| CEA-2010-A Average (40-80Hz) | 120.1 dB (avg of 3/4 bands) |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 18.3"H x 17.8"W x 18.6"D (464.8 x 452.1 x 472.4 mm) |
| Drivers | 13.5" (343mm) driver |
| Enclosure | sealed |
| Measurement Source | Brian Kahn |
| Output SPL at 20 Hz | 98.5 dB |
| Output SPL at 25 Hz | 101.3 dB |
| Output SPL at 31.5 Hz | 108.1 dB |
| Output SPL at 40 Hz | 116.1 dB |
| Output SPL at 50 Hz | 121.1 dB |
| Output SPL at 63 Hz | 123.0 dB |
| Warranty | 5 |
| Weight | 102.3 lbs / 46.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
SVS PB-4000: $2,158.97 Amazon eBay
Pros: Independent CEA-2010 testing records 115.3 dB at 20 Hz and 120.3 dB through 40-80 Hz. The ported, front enclosure with 13.5” (343mm) driver with ported design has the headroom for demanding film bass in a large room.
Cons: The 594.4H x 520.7W x 703.6D mm cabinet and 69.5 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Full SVS PB-4000 review and specifications →
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Drivers | 13.5" (343mm) driver with ported design |
| Enclosure | ported, front |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 102.1 dB |
| Output SPL at 20 Hz | 115.3 dB |
| Output SPL at 25 Hz | 116.3 dB |
| Output SPL at 31.5 Hz | 117.8 dB |
| Output SPL at 40 Hz | 119.8 dB |
| Output SPL at 50 Hz | 121.7 dB |
| Output SPL at 63 Hz | 120.7 dB |
| Output SPL at 80 Hz | 119.2 dB |
| Output SPL at 100 Hz | 118.1 dB |
| Output SPL at 125 Hz | 117.5 dB |
| Warranty | 5 |
| Weight | 153.2 lbs / 69.5 kg |
- Links
- Reviews, Comparisons and Sound Samples
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- SVS PB-4000 vs HSU Research VTF-15H MK2
- SVS PB-4000 vs Rythmik FV15HP
- SVS PB-4000 vs Monoprice Monolith M-215
- SVS PB-4000 vs Reaction Audio PV-15X
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