JBL PRX818XLFW 18" Self-Powered Extended Low-Frequency Subwoofer System - Black
Model #07S-Q64-PRX818XLFW

As low as $60 / month

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The PRX818XLFW from JBL is an extended low-frequency subwoofer designed and engineered to provide sub-bass frequencies with accuracy and power with extensive Wi-Fi control over the on-board DSP. Well suited for event halls, bands, DJ systems, clubs, bars, schools, and churches, the speaker utilizes a 1500W Class-D amplifier to power the 18" woofer, which offers a frequency range of 30 to 103 Hz at 134 dB maximum SPL output. The built-in Wi-Fi offers wireless control of the system from anywhere in the venue using the free PRX Connect app for iOS and Android devices. The app controls levels, an 8-band parametric EQ, user presets, and up to 50ms of user-defined delay to fine-tune your setup. The durable 18mm plywood enclosure is coated with an Obsidian DuraFlex finish and a powder-coated steel grille with acoustical transparent black-cloth backing.


  • For Bands, DJs, Clubs, Schools, Churches
  • Optimized for FOH Systems
  • 18" Woofer for Power and Accuracy
  • Frequency Response: 35 to 87 Hz
  • 134 dB Max SPL Output
  • 1500W Class-D Amplifier
  • Extensive DSP Control Over Parameters
  • Wi-Fi Control of DSP Parameters
  • Free PRX Connect App for iOS & Android


  • System Type: Self-Powered 18.0" / 45.7 cm, subwoofer
  • Max SPL Level: 134 dB peak
  • Frequency Range: Frequency Range (-10 dB): 30 to 103 Hz
  • Frequency Response ± 3dB: 35 to 87 Hz
  • Input Connectors: 2 x Balanced combo XLR-1/4" / 6.35 mm input
  • Input Impedance: 20 kOhms (balanced)
  • Signal Indicator: Limit: Yellow LED indicates peak output has been reached and DSP limiter is acting | Signal: Green LED indicates signal present | Power: Blue indicates system has power and ready to pass audio
  • Dynamics: dbx Type IV limiter circuit
  • Crossover Frequency: Internal Crossover Frequency: 100 Hz DSP Loop out Crossover Frequency: 120 Hz analog 24 dB filter slope


  • Design: Highly efficient Class-D amplifier
  • Power Rating: 1500 W
  • AC Power: 100 to 240 VAC ~ 50/60 Hz
  • Speaker
  • LF Driver: 1 x JBL 2278G 460 mm (18.0" / 45.7 cm) woofer
  • Enclosure: Rectangular, 18 mm, plywood
  • Transport and Storage: 2x injection-molded handles with backing cup
  • Finish and Grille Color: Finish: Obsidian DuraFlex finish | Grille: Powder-coated, Obsidian, 16-gauge perforated steel with acoustical transparent black-cloth backing
  • Dimensions (H x W x D): 27.3 x 20.6 x 28.5" / 69.2 x 52.3 x 72.4 cm
  • Weight: 81.0 lb / 36.7 kg

Packaging Info

  • Package Weight: 100.5 lb
  • Box Dimensions (LxWxH): 33.0 x 29.5 x 25.5"