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JBL JRX118S 18" Compact Subwoofer System

Brand:|Model: JRX118S|Part # 245-816

The JRX118S is loaded with a massive JBL 18" woofer featuring a cast frame and 3" voice coil.
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Part # 245-816
  • Legendary JBL engineering and sound quality
  • Rugged and acoustically superior 3/4" MDF enclosure material
  • All woofers manufactured in California by JBL
  • Tough, non-resonant all-steel handles and 18 gauge steel front grill

Product Details

JBL JRX118S 18" Compact Subwoofer System

The JRX118S is loaded with a massive JBL 18" woofer featuring a cast frame and 3" voice coil. It is rated at 350 watts (continuous) and 1400 watts (peak)—and that's based on JBL Professional's 100 hour torture test. Recommended crossover settings: 30 Hz high pass filter, 24 dB/octave and an 80 to 100 Hz low pass filter, 24 dB/octave. The JBL JRX118S delivers the performance and prestige JBL is known for at an affordable price point. Components: JBL 2043G 18" woofer.

Specifications: • Power handling: 350 watts, peak power handling: 1,400 watts • Frequency response(-10 dB): 38 to 300 Hz • Frequency response (± 3 dB): 55 Hz to 300 Hz • Nominal impedance: 4 ohms • Sensitivity: 101 dB 1W/1m • Maximum SPL: 127 dB • Input Connectors: Neutrik® Speakon® NL-4, 1/4" TS phone jack • Weight: 71 lbs • Dimensions: 23.5" x 20.3" x 22".

JBL Drivers: All woofers and compression drivers used in JRX100 are manufactured in Northridge, California by JBL Professional. 

Hardware: JRX100 doesn't scrimp on the hardware either. All the JRX models use tough, non-resonant all-steel handles with big, beefy bars. And the entire baffle (not just the woofer) is protected by an 18 gauge steel grill. 

Enclosure Construction: Competitive systems typically use particle board construction and rely entirely on glue to hold it together. For JRX100, JBL selected a more rugged and acoustically superior 3/4" MDF material for the enclosures. And to make sure they stay together, they constructed them with advanced adhesives and closely spaced mechanical fasteners. Not only are the cabinets rugged, but the denser enclosure walls are more rigid, delivering better low end as a result.

"Power Capacity" and "Peak Power Capacity" ratings are based on the average and peak power capacity of product samples subjected to a 100 hour power test using random noise with a 6 dB crest factor, in accordance with IEC standards. Recommended amplifier power: 350 watts to 700 watts into 4 ohms. 


Product Specifications
  • Speaker TypePassive / Unpowered
  • ConfigurationSubwoofer
  • Woofer Size18"
JBL JRX118S 18" Compact Subwoofer System
  • BrandJBL Professional
  • ModelJRX118S
  • Part Number245-816
  • UPC050036902793
  • Product CategoryPA Speaker Systems
  • Unit of MeasureEA
  • Product Rating
    (1 Reviews)
  • Weight77 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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JBL JRX118S 18" Compact Subwoofer System

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