The RTJ Audio 18Sub ranks #26 out of 97 total Large Powered Home Subwoofers (Over 75 lbs) for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
Prices on this page were last checked September 4, 2026 at 6:09 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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#26 RTJ Audio 18Sub: $7,000 Discontinued eBay
Cons: Discontinued.
Notes: Made by JTR Audio (spelled backwards)
How it compares: Just above it: RBH Sound SX-1212PR - $5301 cheaper. Just below it: Perlisten Audio D215s - $2000 more.
| CEA-2010-A Average (40-80Hz) | 123.4 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 22.5"H x 22.5"W x 15"D (571.5 x 571.5 x 381.0 mm) |
| Discontinued | Yes |
| Drivers | 18" (457mm) driver |
| Enclosure | sealed |
| Measurement Source | Audioholics |
| Output SPL at 10 Hz | 93.9 dB |
| Output SPL at 12.5 Hz | 97.7 dB |
| Output SPL at 15 Hz | 103.3 dB |
| Output SPL at 20 Hz | 109.1 dB |
| Output SPL at 25 Hz | 113.5 dB |
| Output SPL at 31.5 Hz | 117.8 dB |
| Output SPL at 40 Hz | 121.4 dB |
| Output SPL at 50 Hz | 123.5 dB |
| Output SPL at 63 Hz | 124.4 dB |
| Output SPL at 80 Hz | 124.2 dB |
| Output SPL at 100 Hz | 124.1 dB |
| Output SPL at 125 Hz | 124.7 dB |
| Warranty | ? |
| Weight | 119.9 lbs / 54.4 kg |
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