Short answer: the Funk Audio Ultra 24.0 for better sound quality, the Rythmik FV15HP for the lower price. The Funk Audio Ultra 24.0 ranks #11 of 110 subwoofers at $9761.14. The Rythmik FV15HP ranks #48 at $2127, $7634.14 cheaper.
What the Rythmik FV15HP offers: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more. Watch for: Premium price ($1,770), ported design room gain dependency, and mid-to-large 52 kg footprint.
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 Rythmik FV15HP 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.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Rythmik FV15HP | Funk Audio Ultra 24.0 | |
|---|---|---|
| Price | $1,770 | $9,761.14 |
| Ranked | #48 of 110 in Large Home Subwoofers (Over 75 lbs) | #11 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 12.5 Hz | 92.8 dB | 104.9 dB |
| Output SPL at 15 Hz | 105.1 dB | 111.8 dB |
| Output SPL at 20 Hz | 111.1 dB | 120.0 dB |
| Output SPL at 25 Hz | 116.1 dB | 122.0 dB |
| Output SPL at 31.5 Hz | 120.0 dB | 123.0 dB |
| Output SPL at 40 Hz | 122.5 dB | 127.1 dB |
| Output SPL at 50 Hz | 122.1 dB | 129.9 dB |
| Output SPL at 63 Hz | 121.8 dB | 127.6 dB |
| Output SPL at 80 Hz | 121.4 dB | 127.0 dB |
| Output SPL at 100 Hz | 121.2 dB | 128.2 dB |
| Output SPL at 125 Hz | 121.1 dB | - |
| CEA-2010-A Average (40-80Hz) | 122.0 dB | 127.9 dB |
| Dimensions | 24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm) | 31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm) |
| Weight | 115.1 lbs (52.2 kg) | 297.6 lbs (135 kg) |
| Warranty | 5/3 | 3 |
| Cabinet Color | black, white | wood, custom |
| Country | United States | Canada |
| Measurement Source | Audioholics | Manufacturer |
| Drivers | 15" (381mm) driver | 24" (610mm) driver |
| Output SPL at 10 Hz | - | 101.0 dB |
Related Speaker Comparisons
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- 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
Rythmik FV15HP: $1,770 Rythmik Audio eBay
Pros: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more.
Cons: Premium price ($1,770), ported design room gain dependency, and mid-to-large 52 kg footprint.
Full Rythmik FV15HP review and specifications →
| CEA-2010-A Average (40-80Hz) | 122.0 dB |
|---|---|
| Cabinet Color | black, white |
| Country | United States |
| Dimensions | 24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, front |
| Measurement Source | Audioholics |
| Output SPL at 12.5 Hz | 92.8 dB |
| Output SPL at 15 Hz | 105.1 dB |
| Output SPL at 20 Hz | 111.1 dB |
| Output SPL at 25 Hz | 116.1 dB |
| Output SPL at 31.5 Hz | 120.0 dB |
| Output SPL at 40 Hz | 122.5 dB |
| Output SPL at 50 Hz | 122.1 dB |
| Output SPL at 63 Hz | 121.8 dB |
| Output SPL at 80 Hz | 121.4 dB |
| Output SPL at 100 Hz | 121.2 dB |
| Output SPL at 125 Hz | 121.1 dB |
| Warranty | 5/3 |
| Weight | 115.1 lbs (52.2 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
- Rythmik FV15HP vs JTR Speakers Captivator RS1
- Rythmik FV15HP vs HSU Research VTF-15H MK2
- Rythmik FV15HP vs HSU Research VTF-3 MK5 HP
- Rythmik FV15HP vs SVS PB-4000
- Rythmik FV15HP vs Monoprice Monolith M-15 V2
- Rythmik FV15HP vs JTR Speakers Captivator 1400
- Rythmik FV15HP vs Rythmik F18
- Rythmik FV15HP vs Monoprice Monolith M15-S
- See all 24 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