The JRX218S is driven by a massive JBL 18" woofer with a cast frame and 3" voice-coil.
- 18 inch compact subwoofer.
- 350 W (continuous), 1400 W (peak) power capacity.
- The rugged enclosure is constructed from 19 mm (.75 in) MDF (Medium Density Fiberboard) and covered in black carpet.
- Non-resonant, all steel handles are used
- Attractive 18-gauge perforated steel grille