Short answer: the JTR Speakers Growler (2015) if sound quality matters most, the Rythmik FV15HP if price matters most. The JTR Speakers Growler (2015) ranks #13 of 110 subwoofers at $2995. The Rythmik FV15HP ranks #48 at $2127, $868 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 JTR Speakers Growler (2015) offers: 12-inch ported driver reaches 130.2dB CEA-2010-A average, nearly matching the class leader for about $1,000 less. Watch for: Ported design room interaction, 45 kg size, and $2,995 cost.
Buy the Rythmik FV15HP if the price is the priority over sound quality, or the JTR Speakers Growler (2015) if sound quality is the priority over the price.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Rythmik FV15HP | JTR Speakers Growler (2015) | |
|---|---|---|
| Price | $1,770 | $2995 Passive |
| Ranked | #48 of 110 in Large Home Subwoofers (Over 75 lbs) | #13 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| 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 | 92.8 dB |
| Output SPL at 25 Hz | 116.1 dB | 97.2 dB |
| Output SPL at 31.5 Hz | 120.0 dB | 106.6 dB |
| Output SPL at 40 Hz | 122.5 dB | 122.7 dB |
| Output SPL at 50 Hz | 122.1 dB | 130.0 dB |
| Output SPL at 63 Hz | 121.8 dB | 133.6 dB |
| Output SPL at 80 Hz | 121.4 dB | 134.4 dB |
| Output SPL at 100 Hz | 121.2 dB | 135.5 dB |
| Output SPL at 125 Hz | 121.1 dB | 136.0 dB |
| CEA-2010-A Average (40-80Hz) | 122.0 dB | 130.2 dB |
| Dimensions | 24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm) | 22.5"H x 30"W x 20"D (571.5 x 762.0 x 508.0 mm) |
| Weight | 115.1 lbs (52.2 kg) | 100.1 lbs (45.4 kg) |
| Warranty | 5/3 | - |
| Cabinet Color | black, white | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Drivers | 15" (381mm) driver | 12" (305mm) driver |
| Passive | - | Yes |
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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
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- 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
JTR Speakers Growler (2015): $2995 Passive eBay
Pros: 12-inch ported driver reaches 130.2dB CEA-2010-A average, nearly matching the class leader for about $1,000 less.
Cons: Ported design room interaction, 45 kg size, and $2,995 cost.
Notes: Looks like “PA sub”
Full JTR Speakers Growler (2015) review and specifications →
| CEA-2010-A Average (40-80Hz) | 130.2 dB |
|---|---|
| Country | United States |
| Dimensions | 22.5"H x 30"W x 20"D (571.5 x 762.0 x 508.0 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, front |
| Measurement Source | Data-bass |
| Output SPL at 20 Hz | 92.8 dB |
| Output SPL at 25 Hz | 97.2 dB |
| Output SPL at 31.5 Hz | 106.6 dB |
| Output SPL at 40 Hz | 122.7 dB |
| Output SPL at 50 Hz | 130.0 dB |
| Output SPL at 63 Hz | 133.6 dB |
| Output SPL at 80 Hz | 134.4 dB |
| Output SPL at 100 Hz | 135.5 dB |
| Output SPL at 125 Hz | 136.0 dB |
| Passive | Yes |
| Weight | 100.1 lbs (45.4 kg) |
- 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
- JTR Speakers Growler (2015) vs Danley Sound Labs DTS10
- JTR Speakers Growler (2015) vs Harbinger V2218S
- JTR Speakers Growler (2015) vs Funk Audio Ultra 24.0
- JTR Speakers Growler (2015) vs Funk Audio Classic 18.0
- JTR Speakers Growler (2015) vs JTR Speakers Captivator S2
- JTR Speakers Growler (2015) vs Monoprice Monolith 16 THX Ultra
- JTR Speakers Growler (2015) vs Reaction Audio PV-15X
- JTR Speakers Growler (2015) vs Pro Audio Technology LFC-24sm
- See all 22 comparisons