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.
#26 RTJ Audio 18Sub: $7,000
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 15.0"D (571.5 x 571.5 x 381.0 mm) |
| Discontinued | Yes |
| Driver | 18" (457mm) driver |
| Driver(s) | (1) 18 inch |
| 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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Product prices and availability were last checked July 31, 2026 at 5:30 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.