Short answer: the Pro Audio Technology LFC-24sm on measured sound quality, the JTR Speakers Growler (2015) on price. The Pro Audio Technology LFC-24sm ranks #4 of 110 subwoofers, rated 4.6/5, at $10000. The JTR Speakers Growler (2015) ranks #13, rated 4.5/5, at $2995, $7005 cheaper.
What the JTR Speakers Growler (2015) gets right: 12-inch ported driver reaches 130.2dB CEA-2010-A average, nearly matching the class leader for about $7005 less. The tradeoff: Ported design room interaction, 45 kg (99.2 lbs) size, and $2,995 cost.
Buy the JTR Speakers Growler (2015) if the price matters more than sound quality. Buy the Pro Audio Technology LFC-24sm if sound quality matters more than the price.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| JTR Speakers Growler (2015) | Pro Audio Technology LFC-24sm | |
|---|---|---|
| Price | $2995 Passive | $10,000 Passive |
| Ranked | #13 of 110 in Large Home Subwoofers (Over 75 lbs) | #4 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Passive | Yes | Yes |
| Output SPL at 20 Hz | 92.8 dB | 123.7 dB |
| Output SPL at 25 Hz | 97.2 dB | 131.4 dB |
| Output SPL at 31.5 Hz | 106.6 dB | 133.6 dB |
| Output SPL at 40 Hz | 122.7 dB | 135.4 dB |
| Output SPL at 50 Hz | 130.0 dB | 136.0 dB |
| Output SPL at 63 Hz | 133.6 dB | 135.2 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 | - |
| CEA-2010-A Average (40-80Hz) | 130.2 dB | 135.5 dB (avg of 3/4 bands) |
| Dimensions | 22.5"H x 30"W x 20"D (571.5 x 762.0 x 508.0 mm) | 26"H x 60.5"W x 21"D (660.4 x 1536.7 x 533.4 mm) |
| Country | United States | United States |
| Measurement Source | Data-bass | Brent Butterworth |
| Weight | 100.1 lbs (45.4 kg) | 266.1 lbs (120.7 kg) |
| Drivers | 12" (305mm) driver | 24" (610mm) driver |
| Warranty | 5 years | - |
| Cabinet Color | - | black |
Related Speaker Comparisons
More worthwhile head-to-heads for Pro Audio Technology LFC-24sm:
- Pro Audio Technology LFC-24sm vs WW Speaker Cabinets X21 - B&C 21DS115-4
- JTR Speakers Captivator S2 vs Pro Audio Technology LFC-24sm
- Danley Sound Labs DTS10 vs Pro Audio Technology LFC-24sm
- Monoprice Monolith 16 THX Ultra vs Pro Audio Technology LFC-24sm
- Reaction Audio PV-15X vs Pro Audio Technology LFC-24sm
Prices on this page were last checked September 23, 2026 at 11:24 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
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 $2995 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 |
| Warranty | 5 years |
| 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 Rythmik FV25HP
- See all 22 comparisons
Pro Audio Technology LFC-24sm: $10,000 Passive eBay
Pros: Independent CEA-2010 testing records 123.7 dB at 20 Hz and 135.5 dB (avg of 3/4 bands) through 40-80 Hz. The ported, front enclosure with 24” (610mm) driver is best suited to demanding film bass in a large room.
Cons: The 660.4H x 1536.7W x 533.4D mm cabinet and 120.7 kg mass still need deliberate placement and calibration.
Full Pro Audio Technology LFC-24sm review and specifications →
| CEA-2010-A Average (40-80Hz) | 135.5 dB (avg of 3/4 bands) |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 26"H x 60.5"W x 21"D (660.4 x 1536.7 x 533.4 mm) |
| Drivers | 24" (610mm) driver |
| Enclosure | ported, front |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 123.7 dB |
| Output SPL at 25 Hz | 131.4 dB |
| Output SPL at 31.5 Hz | 133.6 dB |
| Output SPL at 40 Hz | 135.4 dB |
| Output SPL at 50 Hz | 136.0 dB |
| Output SPL at 63 Hz | 135.2 dB |
| Passive | Yes |
| Weight | 266.1 lbs (120.7 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
- Pro Audio Technology LFC-24sm vs WW Speaker Cabinets X21 - B&C 21DS115-4
- Pro Audio Technology LFC-24sm vs JTR Speakers Captivator S2
- Pro Audio Technology LFC-24sm vs Danley Sound Labs DTS10
- Pro Audio Technology LFC-24sm vs Monoprice Monolith 16 THX Ultra
- Pro Audio Technology LFC-24sm vs Reaction Audio PV-15X
- Pro Audio Technology LFC-24sm vs JBL 4645C
- Pro Audio Technology LFC-24sm vs Chase Home Theater SS18.1
- Pro Audio Technology LFC-24sm vs HSU Research VTF-15H MK2
- See all 9 comparisons