JBL PRX918XLF Professional Powered 18-inch Subwoofer

The JBL PRX918XLF is a professional-grade powered 18-inch subwoofer from the acclaimed PRX900 Series, designed to elevate portable PA performance for DJs, bands, music venues, rental houses, and corporate A/V providers. Engineered with JBL’s cutting-edge acoustic technology, this subwoofer delivers powerful, room-filling bass with exceptional clarity and smooth low-frequency extension, even at maximum volume. Its next-generation 918SG 18-inch ferrite magnet woofer, paired with a lightweight, ultra-efficient Class D amplifier, provides an impressive 2,000 watts peak (1,000 watts RMS) power output, achieving a maximum SPL of 134 dB.

The PRX918XLF features a comprehensive DSP suite, accessible via an onboard color LCD or the JBL Pro Connect app, offering 6-band parametric EQ, a lowpass filter, and up to 20ms of delay for precise system tuning. The app enables full hardware and DSP control of up to 10 speakers, with seamless integration alongside JBL EON ONE MK2, PRX ONE, and EON700 systems. Additional app-only features include speaker snapshots and grouping for streamlined operation. DriveRack technology further enhances performance with 180ms of speaker delay in 100-microsecond intervals, ensuring time-aligned audio in any setup.

Built for durability, the PRX918XLF is housed in an 18mm birch cabinet with optimized bracing for smooth low-frequency response and resilience on the road. Its FEA flared port design reduces air noise and distortion, while a quiet, fanless operation ensures reliability. The subwoofer offers versatile I/O with two XLR balanced combo inputs and two XLR pass-through outputs, plus an M20 pole mount for easy pairing with full-range speakers. With a frequency response of 30 Hz–110 Hz (-10 dB) and selectable crossover frequencies (80 Hz, 100 Hz, 120 Hz), this subwoofer is a versatile, high-performance solution for any portable or installed audio scenario, backed by JBL’s rigorous testing and validation standards.