Short answer: the Funk Audio Ultra 24.0 on measured sound quality, the HSU Research VTF-3 MK3 on price. The Funk Audio Ultra 24.0 ranks #11 of 110 subwoofers at $9761.14. The HSU Research VTF-3 MK3 ranks #97 at $1499, $8262.14 cheaper.
What the HSU Research VTF-3 MK3 offers: Independent CEA-2010 testing records 104.3 dB at 20 Hz and 113.5 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) 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 546.1H x 431.8W x 635.0D mm cabinet and 40.8 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 HSU Research VTF-3 MK3 if the price is the priority over sound quality, or the Funk Audio Ultra 24.0 if sound quality is the priority over the price.
Skip the HSU Research VTF-3 MK3 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
| HSU Research VTF-3 MK3 | Funk Audio Ultra 24.0 | |
|---|---|---|
| Price | $1499 | $9,761.14 |
| Ranked | #97 of 110 in Large Home Subwoofers (Over 75 lbs) | #11 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, rear | sealed |
| Output SPL at 15 Hz | 88.5 dB | 111.8 dB |
| Output SPL at 20 Hz | 104.3 dB | 120.0 dB |
| Output SPL at 25 Hz | 108.7 dB | 122.0 dB |
| Output SPL at 31.5 Hz | 109.7 dB | 123.0 dB |
| Output SPL at 40 Hz | 112.1 dB | 127.1 dB |
| Output SPL at 50 Hz | 113.7 dB | 129.9 dB |
| Output SPL at 63 Hz | 114.0 dB | 127.6 dB |
| Output SPL at 80 Hz | 114.0 dB | 127.0 dB |
| CEA-2010-A Average (40-80Hz) | 113.5 dB | 127.9 dB |
| Dimensions | 21.5"H x 17"W x 25"D (546.1 x 431.8 x 635.0 mm) | 31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm) |
| Weight | 89.9 lbs (40.8 kg) | 297.6 lbs (135 kg) |
| Country | United States | Canada |
| Measurement Source | Ilkka Rissanen | Manufacturer |
| Drivers | 12" (305mm) driver | 24" (610mm) driver |
| Output SPL at 10 Hz | - | 101.0 dB |
| Output SPL at 12.5 Hz | - | 104.9 dB |
| Output SPL at 100 Hz | - | 128.2 dB |
| Warranty | - | 3 |
| 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
HSU Research VTF-3 MK3: $1499 eBay
Pros: Independent CEA-2010 testing records 104.3 dB at 20 Hz and 113.5 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) 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 546.1H x 431.8W x 635.0D mm cabinet and 40.8 kg mass still require deliberate placement and calibration.
Full HSU Research VTF-3 MK3 review and specifications →
| CEA-2010-A Average (40-80Hz) | 113.5 dB |
|---|---|
| Country | United States |
| Dimensions | 21.5"H x 17"W x 25"D (546.1 x 431.8 x 635.0 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Ilkka Rissanen |
| Output SPL at 15 Hz | 88.5 dB |
| Output SPL at 20 Hz | 104.3 dB |
| Output SPL at 25 Hz | 108.7 dB |
| Output SPL at 31.5 Hz | 109.7 dB |
| Output SPL at 40 Hz | 112.1 dB |
| Output SPL at 50 Hz | 113.7 dB |
| Output SPL at 63 Hz | 114.0 dB |
| Output SPL at 80 Hz | 114.0 dB |
| Weight | 89.9 lbs (40.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Ilkka Rissanen; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- HSU Research VTF-3 MK3 vs RSL (Rogersound Labs) Speedwoofer 12S
- HSU Research VTF-3 MK3 vs Monoprice Monolith 12 THX Ultra
- HSU Research VTF-3 MK3 vs HSU Research VTF-3 MK3 with Turbocharger
- HSU Research VTF-3 MK3 vs BK Electronics Monolith-DF
- HSU Research VTF-3 MK3 vs SVS SB13-Plus
- HSU Research VTF-3 MK3 vs Rythmik F18
- HSU Research VTF-3 MK3 vs SVS PB-4000
- HSU Research VTF-3 MK3 vs HSU Research VTF-3 MK5 HP
- See all 17 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