The JRX218S is driven by a massive JBL 18" woofer with a cast frame and 3" voice-coil.

JBL JRX218S 18 passive compact subwoofer with 1400W peak power handling Features:

• 18 in. compact subwoofer
• 350 W (continuous), 1400 W (peak) power capacity
• The rugged enclosure is constructed from 19 mm (.75 in) 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 35 mm pole mount receptacle can receive an optional SS3BK pole to facilitate use of the JRX218S as a base for a midhigh speaker cabinet
• Non-resonant, all steel handles are used
• Attractive 18-gauge perforated steel grille protects components from damage

JBL JRX218S 18 passive compact subwoofer with 1400W peak power handling Specifications:

• Power Rating: 350 W / 1400 W
• Frequency Range (-10 dB): 38 Hz – 300 Hz
• Frequency Response (±3 dB): 55 Hz – 300 Hz
• Sensitivity (@1m): 96 dB SPL
• Nominal Impedence: 4 ohms
• Recommended Amplifier Power: 350 W to 700 W into 4 ohms
• Recommended Crossover Settings: 30 Hz HPF, 24 dB / octave; 80 – 100 Hz LPF, 24 dB / octave
• Maximum SPL: 127 dB
• Dimensions
• (H x W x D): 597 mm x 516 mm x 559 mm
• (23.5 in x 20.3 in x 22 in)
• Weight: 32.2 kg (71 lb)
• Low Frequency Driver: JBL 2043-G
• Input Connectors: Neutrik® Speakon® NL-4 (x1); .25 in TS phone jack (x1); parallel