The JRX118S is driven by a massive JBL 18" woofer with a cast frame and 3" voice-coil. 
The JRX118S is driven by a massive JBL 18" woofer with a cast frame and 3" voice-coil. It's rated at 350 watts (continuous) and 1400 watts (peak) – and that's based on JBL Professional‘s 100 hour torture test. We've even created settings for the dbx DriveRack® PA Loudspeaker Controller that will let you get every last bit of performance from your JRX118S system.
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 JRX118SP as a base for a mid-high speaker cabinet. 
  - Non-resonant, all steel handles are used.
  - Attractive 18-gauge perforated steel grille protects components from damage.
  - 35 mm pole mount receptacle for use with satellite speakers.
 
  - Power Rating: 350 W / 1400 W 
   - Frequency Range: 38 Hz - 300 Hz (-10 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) 
   - Frequency Response: 55 Hz - 300 Hz (±3 dB) 
   - Sensitivity: 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 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
 
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