Jbl PRX818XLFW 18" Self-Powered Extended Low-Frequency Subwoofer System

Model: PRX818XLFW

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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


Transport and Storage 2x injection-molded handles with backing cup
Weight 81.0 lb / 36.7 kg
Dimensions (H x W x D) 27.3 x 20.6 x 28.5" / 69.2 x 52.3 x 72.4 cm
LF Driver 1 x JBL 2278G 460 mm (18.0" / 45.7 cm) woofer
Enclosure Rectangular, 18 mm, plywood
Finish and Grille Color Finish: Obsidian DuraFlex finish Grille: Powder-coated, Obsidian, 16-gauge perforated steel with acoustical transparent black-cloth backing

Packaging Info

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


Power Rating 1500 W
Design Highly efficient Class-D amplifier
AC Power 100 to 240 VAC ~ 50/60 Hz
User Reviews
8 March 2017

Perfect fit, great protection from road rash. Cut outs allow to be carried by handles. Seem as if they will hold up for a lot of hard use.

12 April 2017

Using one of these in small/medium size bars will provide nice low end for a mellow band. You'll want 2 if you wanna get loud and dancey. If you need deep, hard hitting bass, you probably want to spend the extra money on the JBL SRX series. But for my purposes, the PRX818XLFW does a great job.

10 November 2015

Super durable and nicely padded. Keeps my sub looking nice!

31 July 2018

These rock! 1500 watts of ground shaking tight bass ! If you want powerfull accurate bass these are the powered subs to get ! .

14 June 2019

Great sounding Bass Value for money.Buy with confidence

24 February 2017

Absolutely! The worst subwoofer i have ever purchased. I have the older model which is the prx718xlf which is 100 times better then this woofer. I purchased this woofer thinking it was an upgrade ( which it is supposed to be ) and definitely not. The 700 Series Bumps Way harder and louder.

16 January 2015

Perfect fit for the speakers. +1

Product Highlights
  • 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
In The Box
  • JBL PRX818XLFW 18" Self-Powered Extended Low-Frequency Subwoofer System
  • Power Cord
  • Limited 5-Year Warranty
Still Have Questions?
We can help via Live Chat, Email or you can call us 1-888-840-0464

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