Short answer: the Pro Audio Technology LFC-24sm for the higher ranking, the Chase Home Theater SS18.1 for the lower price. The Pro Audio Technology LFC-24sm ranks #4 of 7 subwoofers at $10000. The Chase Home Theater SS18.1 ranks #6 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 weight, and sealed design room modes.
One note: the Chase Home Theater SS18.1 is discontinued, but it still ranks #6 of 7 subwoofers, ahead of most of what is still sold new, so it is worth considering used.
Buy the Chase Home Theater SS18.1 if the price matters more than the ranking. Buy the Pro Audio Technology LFC-24sm if the ranking matters more than the price.
Specifications Side By Side
| Chase Home Theater SS18.1 | Pro Audio Technology LFC-24sm | |
|---|---|---|
| Price | $2499 Discontinued | $10,000 |
| Ranked | #6 of 7 in Large Passive Home Subwoofers (Over 75 lbs) | #4 of 7 in Large Passive 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 | 117.7 dB |
| Output SPL at 25 Hz | 106.0 dB | 125.4 dB |
| Output SPL at 31.5 Hz | 111.6 dB | 127.6 dB |
| Output SPL at 40 Hz | 118.2 dB | 129.4 dB |
| Output SPL at 50 Hz | 123.6 dB | 130.0 dB |
| Output SPL at 63 Hz | 128.1 dB | 129.2 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 | 129.5 dB (avg of 3/4 bands) |
| Dimensions | 22.0"H x 24.0"W x 22.0"D (558.8 x 609.6 x 558.8 mm) | 26.0"H x 60.5"W x 21.0"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 |
| Cabinet Color | - | black |
| Country | - | United States |
The Two Speakers In Full
Chase Home Theater SS18.1: $2499 Discontinued
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.
| CEA-2010-A Average (40-80Hz) | 125.2 dB |
|---|---|
| Dimensions | 22.0"H x 24.0"W x 22.0"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 |
- Buy Used
- Head-to-Head Comparisons
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Pro Audio Technology LFC-24sm: $10,000
| CEA-2010-A Average (40-80Hz) | 129.5 dB (avg of 3/4 bands) |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 26.0"H x 60.5"W x 21.0"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 | 117.7 dB |
| Output SPL at 25 Hz | 125.4 dB |
| Output SPL at 31.5 Hz | 127.6 dB |
| Output SPL at 40 Hz | 129.4 dB |
| Output SPL at 50 Hz | 130.0 dB |
| Output SPL at 63 Hz | 129.2 dB |
| Passive | Yes |
| Weight | 266.1 lbs / 120.7 kg |
- Head-to-Head Comparisons
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.