Short answer: the Pro Audio Technology LFC-24sm on measured sound quality, the Chase Home Theater SS18.1 on price. The Pro Audio Technology LFC-24sm ranks #4 of 110 subwoofers, rated 4.6/5, at $10000. The Chase Home Theater SS18.1 ranks #32, rated 4.3/5, at $2499, $7501 cheaper.
The case for the Chase Home Theater SS18.1: 18-inch sealed driver delivers 125.2dB CEA-2010-A average from a dedicated cinema-style sealed cabinet. The catch: Passive design needs external amplification, 41 kg (90.4 lbs) weight, and sealed design room modes.
Worth knowing: the Chase Home Theater SS18.1 is discontinued, though it still ranks #32 of 110 subwoofers by sound quality, so a used unit beats most of what is still sold new.
Buy the Chase Home Theater SS18.1 when the price outweighs sound quality for you, and the Pro Audio Technology LFC-24sm when sound quality outweighs the price instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Chase Home Theater SS18.1 | Pro Audio Technology LFC-24sm | |
|---|---|---|
| Price | $2499 Passive, Discontinued | $10,000 Passive |
| Ranked | #32 of 110 in Large Home Subwoofers (Over 75 lbs) | #4 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Passive | Yes | Yes |
| Output SPL at 12.5 Hz | 92.8 dB | - |
| Output SPL at 15 Hz | 97.2 dB | - |
| Output SPL at 20 Hz | 101.3 dB | 123.7 dB |
| Output SPL at 25 Hz | 106.0 dB | 131.4 dB |
| Output SPL at 31.5 Hz | 111.6 dB | 133.6 dB |
| Output SPL at 40 Hz | 118.2 dB | 135.4 dB |
| Output SPL at 50 Hz | 123.6 dB | 136.0 dB |
| Output SPL at 63 Hz | 128.1 dB | 135.2 dB |
| Output SPL at 80 Hz | 130.8 dB | - |
| Output SPL at 100 Hz | 132.6 dB | - |
| Output SPL at 125 Hz | 133.7 dB | - |
| CEA-2010-A Average (40-80Hz) | 125.2 dB | 135.5 dB (avg of 3/4 bands) |
| Dimensions | 22"H x 24"W x 22"D (558.8 x 609.6 x 558.8 mm) | 26"H x 60.5"W x 21"D (660.4 x 1536.7 x 533.4 mm) |
| Measurement Source | Data-bass | Brent Butterworth |
| Discontinued | Yes | - |
| Weight | 89.9 lbs (40.8 kg) | 266.1 lbs (120.7 kg) |
| Drivers | 18" (457mm) driver | 24" (610mm) driver |
| Country | USA | United States |
| 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
- JTR Speakers Growler (2015) 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
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
Chase Home Theater SS18.1: $2499 Passive, Discontinued eBay
Pros: 18-inch sealed driver delivers 125.2dB CEA-2010-A average from a dedicated cinema-style sealed cabinet.
Cons: Passive design needs external amplification, 41 kg weight, and sealed design room modes. Discontinued.
Full Chase Home Theater SS18.1 review and specifications →
| CEA-2010-A Average (40-80Hz) | 125.2 dB |
|---|---|
| Country | USA |
| Dimensions | 22"H x 24"W x 22"D (558.8 x 609.6 x 558.8 mm) |
| Discontinued | Yes |
| Drivers | 18" (457mm) driver |
| Enclosure | sealed |
| Measurement Source | Data-bass |
| Output SPL at 12.5 Hz | 92.8 dB |
| Output SPL at 15 Hz | 97.2 dB |
| Output SPL at 20 Hz | 101.3 dB |
| Output SPL at 25 Hz | 106.0 dB |
| Output SPL at 31.5 Hz | 111.6 dB |
| Output SPL at 40 Hz | 118.2 dB |
| Output SPL at 50 Hz | 123.6 dB |
| Output SPL at 63 Hz | 128.1 dB |
| Output SPL at 80 Hz | 130.8 dB |
| Output SPL at 100 Hz | 132.6 dB |
| Output SPL at 125 Hz | 133.7 dB |
| Passive | Yes |
| Weight | 89.9 lbs (40.8 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
- Chase Home Theater SS18.1 vs JBL 4645C
- Chase Home Theater SS18.1 vs Reaction Audio PV-15X
- Chase Home Theater SS18.1 vs Monoprice Monolith 16 THX Ultra
- Chase Home Theater SS18.1 vs Danley Sound Labs DTS10
- Chase Home Theater SS18.1 vs HSU Research VTF-15H MK2
- Chase Home Theater SS18.1 vs JTR Speakers Growler (2015)
- Chase Home Theater SS18.1 vs HSU Research VTF-3 MK5 HP
- Chase Home Theater SS18.1 vs JTR Speakers Captivator S2
- See all 9 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 JTR Speakers Growler (2015)
- 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 HSU Research VTF-15H MK2
- See all 9 comparisons