SKU: PRX818XLFW Category:


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The JBL PRX818XLFW is a self-powered extended low-frequency subwoofer system for reinforcing your PA systems low end response. Featuring a punchy JBL 15-inch woofer powered by a 1500-watt class-D amplifier and delivering an impressive 131dB peak SPL. But what, PRX818XLFW delivers incredible output in a lightweight and compact form factor. This latest series in the PRX range also features an integrated WiFi connection. This allows you to wirelessly control and tune your PA system from the PRX app for iOS and Android.
Walk around the venue during sound check and fine-tune your speakers to sound better as a system. Use the 8-band EQ, speaker delay, mute, gain and more to make sure your audience hears great sound from every corner of the room. It’s easy to configure shows offline and save presets. You can even find any connected speaker instantly with the useful Locator function.

Designed to deliver legendary JBL sound for bands, DJs and more, PRX818XLFW represents the next generation in smart live sound reinforcement.


  • Built-in Wi-Fi for wireless control of your system from anywhere in the venue
  • Free PRX Connect mobile app for iOS and Android provides wireless control over volume levels, 8-band parametric EQ and up to 50ms of speaker delay to fine-tune your sound
  • Class-leading 1500-watt amplifier delivers ample power to fill your venue
  • JBL Differential Drive® transducers for higher SPL in a lightweight design
  • Next-generation JBL neodymium compression drivers
  • Redesigned Crown input technology, including XLR, 1/4” and RCA inputs plus XLR loop-through
  • Intelligent variable-speed fan activates only when needed to reduce noise
  • Updated tuning delivers flat frequency response and smooth off-axis behavior
  • Durable wooden cabinets, tour-proven DuraFlex™ finish and dent-resistant 16-gauge grilles
  • Universal power supply for worldwide compatibility
  • dbx Type IV™ limiting ensures clear, accurate sound at high volumes
  • Brutal testing regimen—including the famous JBL 100-hour power test—ensures reliable performance


System Type: Self Powered 18” subwoofer

Amplifier: Class-D

Power Rating: 1500W (750W x 2)

Frequency Range: 30 Hz – 103 Hz (-10 dB, Main)

Frequency Response:  35 Hz – 87 Hz (±3 dB, Main)

Maximum SPL: 134 dB peak

Internal Crossover Frequency: 100Hz DSP

Driver: 1 x 2278G 18″ (640mm) woofer

Input Connectors: Two Balanced female XLR/ 1/4” combo connectors

Input Impedance: 20K Ohms (balanced)

Signal Indicators:

  • Yellow LED indicates peak output has been reached and dsp limiter is acting
  • Green LED indicates signal present
  • Blue indicates system has power and ready to pass audio

EQ: User selectable presets for Main or Monitor position, Advanced EQ settings available using Wi-Fi and PRX Connect application

Dynamic Control (Input): dbx Type IV™ limiter circuit

AC Power Input: 100V – 240V ~ 50/60 Hz

Enclosure: Rectangular, 18 mm & 25 mm, plywood

Finish: Obsidian DuraFlex™ finish

Dimensions (H x W x D): 692 mm x 523 mm x 724 mm

Weight: 36.8 kg


For more information, please visit the manufacturer's website.