JBL JRX218S 18 in. Compact Subwoofer

The JBL JRX218S delivers substantial low-end punch in a footprint designed for practical deployment across venues of varying sizes. Its compact yet robust construction makes it straightforward to position and integrate into existing systems, while the dual all-steel handles and manageable weight distribution facilitate single-operator setup and transport.

Power & Connectivity

Running 350 watts continuous and 1400 watts peak into a 4-ohm nominal impedance, this subwoofer pairs reliably with standard amplifier configurations and powered mixing consoles. Dual Neutrik Speakon connectors enable parallel wiring for flexible system integration.

Low-Frequency Performance

The 18" JBL woofer with stamped steel frame and 3" voice-coil produces a rated maximum SPL of 133 dB peak at 1 meter, with 98 dB sensitivity ensuring efficient output across venue environments. Frequency response extends from 53 Hz to 250 Hz (±3 dB), covering the critical bass and low-midrange spectrum for live sound reinforcement.

Key Features

• 18" JBL woofer with stamped steel frame and 3" voice coil
• 350 watts continuous / 1400 watts peak power handling
• 4 ohms nominal impedance
• Frequency Response: 53 Hz – 250 Hz (±3 dB)
• Frequency Range: 34 Hz – 250 Hz (−10 dB)
• 98 dB sensitivity at 1 watt / 1 meter
• 133 dB maximum SPL (peak @ 1 m)
• 19 mm MDF enclosure with advanced adhesives and mechanical fasteners
• Black carpet covering with 18-gauge hexagon perforated steel grille
• Dual Neutrik Speakon NL-4 connectors
• Cast aluminum 35 mm pole mount receptacle
• Dimensions: 23.5" H × 20.3" W × 22" D; Weight: 71 lbs

The JRX218S combines professional-grade engineering with straightforward rigging and connectivity, making it a reliable choice for mobile and fixed installations requiring solid low-frequency extension.