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The JBL JRX218S 18" Compact Subwoofer is driven by an 18.0" (457.2mm) woofer with a cast frame and 3.0" (76.2mm) voice-coil.
Features a 350 W (continuous) and 1400 W (peak) power capacity.
The rugged enclosure is constructed from 0.75" (19mm) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for durability and improved low-frequency performance. The enclosure is covered in black carpet.
A top mounted, cast aluminum 1.3" (35mm) pole mount receptacle can receive an optional SS3BK pole to facilitate use of the JRX218S as a base for a mid-high speaker cabinet.
Non-resonant, all-steel handles are used.
An 18-gauge perforated steel grille protects components from damage.