Short answer: the Funk Audio Ultra 24.0 for better sound quality, the SVS SB13-Plus for the lower price. The Funk Audio Ultra 24.0 ranks #11 of 110 subwoofers at $9761.14. The SVS SB13-Plus ranks #108 at $1399, $8362.14 cheaper.
What the SVS SB13-Plus offers: Independent CEA-2010 testing records 92.3 dB at 20 Hz and 108.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13” (330mm) driver delivers substantial 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 431.8H x 431.8W x 457.2D mm cabinet and 43.1 kg mass still require deliberate placement and calibration.
What the Funk Audio Ultra 24.0 offers: Published CEA-2010 specifications list 120.0 dB at 20 Hz and 127.9 dB through 40-80 Hz. The sealed enclosure with 24” (610mm) driver has the headroom for demanding film bass in a large room. Watch for: The 787.4H x 660.4W x 609.6D mm cabinet and 135 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.
Buy the SVS SB13-Plus if the price matters more than sound quality. Buy the Funk Audio Ultra 24.0 if sound quality matters more than the price.
Skip the SVS SB13-Plus if sound quality matters to you. It ranks near the bottom of the 110 subwoofers.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| SVS SB13-Plus | Funk Audio Ultra 24.0 | |
|---|---|---|
| Price | $1399 | $9,761.14 |
| Ranked | #108 of 110 in Large Home Subwoofers (Over 75 lbs) | #11 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 92.3 dB | 120.0 dB |
| Output SPL at 25 Hz | 97.2 dB | 122.0 dB |
| Output SPL at 31.5 Hz | 97.2 dB | 123.0 dB |
| Output SPL at 40 Hz | 108.1 dB | 127.1 dB |
| Output SPL at 50 Hz | 108.1 dB | 129.9 dB |
| Output SPL at 63 Hz | 108.1 dB | 127.6 dB |
| CEA-2010-A Average (40-80Hz) | 108.1 dB (avg of 3/4 bands) | 127.9 dB |
| Dimensions | 17"H x 17"W x 18"D (431.8 x 431.8 x 457.2 mm) | 31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm) |
| Weight | 95 lbs (43.1 kg) | 297.6 lbs (135 kg) |
| Warranty | 5 | 3 |
| Country | United States | Canada |
| Measurement Source | Brent Butterworth | Manufacturer |
| Drivers | 13" (330mm) driver | 24" (610mm) driver |
| Output SPL at 10 Hz | - | 101.0 dB |
| Output SPL at 12.5 Hz | - | 104.9 dB |
| Output SPL at 15 Hz | - | 111.8 dB |
| Output SPL at 80 Hz | - | 127.0 dB |
| Output SPL at 100 Hz | - | 128.2 dB |
| Cabinet Color | - | wood, custom |
Related Speaker Comparisons
How Funk Audio Ultra 24.0 compares with other leading options:
- Funk Audio Ultra 24.0 vs JTR Speakers Captivator S2
- Funk Audio Ultra 24.0 vs Power Sound Audio (PSA) V3600I
- Funk Audio Custom 21.0 vs Funk Audio Ultra 24.0
- JTR Speakers Growler (2015) vs Funk Audio Ultra 24.0
- Harbinger V2218S vs Funk Audio Ultra 24.0
Prices on this page were last checked September 16, 2026 at 12:41 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
SVS SB13-Plus: $1399 eBay
Pros: Independent CEA-2010 testing records 92.3 dB at 20 Hz and 108.1 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 13” (330mm) driver delivers substantial 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 431.8H x 431.8W x 457.2D mm cabinet and 43.1 kg mass still require deliberate placement and calibration.
Full SVS SB13-Plus review and specifications →
| CEA-2010-A Average (40-80Hz) | 108.1 dB (avg of 3/4 bands) |
|---|---|
| Country | United States |
| Dimensions | 17"H x 17"W x 18"D (431.8 x 431.8 x 457.2 mm) |
| Drivers | 13" (330mm) driver |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 92.3 dB |
| Output SPL at 25 Hz | 97.2 dB |
| Output SPL at 31.5 Hz | 97.2 dB |
| Output SPL at 40 Hz | 108.1 dB |
| Output SPL at 50 Hz | 108.1 dB |
| Output SPL at 63 Hz | 108.1 dB |
| Warranty | 5 |
| Weight | 95 lbs (43.1 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
- SVS SB13-Plus vs Monoprice THX 121456
- SVS SB13-Plus vs BK Electronics Monolith-DF
- SVS SB13-Plus vs RSL (Rogersound Labs) Speedwoofer 12S
- SVS SB13-Plus vs HSU Research VTF-3 MK3
- SVS SB13-Plus vs Rythmik F18
- SVS SB13-Plus vs SVS PB-4000
- SVS SB13-Plus vs HSU Research VTF-3 MK5 HP
- SVS SB13-Plus vs Rythmik FV15HP
- See all 16 comparisons
Funk Audio Ultra 24.0: $9,761.14 eBay
Pros: Published CEA-2010 specifications list 120.0 dB at 20 Hz and 127.9 dB through 40-80 Hz. The sealed enclosure with 24” (610mm) driver has the headroom for demanding film bass in a large room.
Cons: The 787.4H x 660.4W x 609.6D mm cabinet and 135 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.
Full Funk Audio Ultra 24.0 review and specifications →
| CEA-2010-A Average (40-80Hz) | 127.9 dB |
|---|---|
| Cabinet Color | wood, custom |
| Country | Canada |
| Dimensions | 31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm) |
| Drivers | 24" (610mm) driver |
| Enclosure | sealed |
| Measurement Source | Manufacturer |
| Output SPL at 10 Hz | 101.0 dB |
| Output SPL at 12.5 Hz | 104.9 dB |
| Output SPL at 15 Hz | 111.8 dB |
| Output SPL at 20 Hz | 120.0 dB |
| Output SPL at 25 Hz | 122.0 dB |
| Output SPL at 31.5 Hz | 123.0 dB |
| Output SPL at 40 Hz | 127.1 dB |
| Output SPL at 50 Hz | 129.9 dB |
| Output SPL at 63 Hz | 127.6 dB |
| Output SPL at 80 Hz | 127.0 dB |
| Output SPL at 100 Hz | 128.2 dB |
| Warranty | 3 |
| Weight | 297.6 lbs (135 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
- Funk Audio Ultra 24.0 vs Funk Audio Custom 21.0
- Funk Audio Ultra 24.0 vs Power Sound Audio (PSA) V3600I
- Funk Audio Ultra 24.0 vs JTR Speakers Captivator S2
- Funk Audio Ultra 24.0 vs JTR Speakers Growler (2015)
- Funk Audio Ultra 24.0 vs Harbinger V2218S
- Funk Audio Ultra 24.0 vs Funk Audio Classic 18.0
- Funk Audio Ultra 24.0 vs Monoprice Monolith 16 THX Ultra
- Funk Audio Ultra 24.0 vs Rythmik FV25HP
- See all 17 comparisons