JBL PRX 918XLF

Essential Information About the JBL PRX918XLF Powered Subwoofer

• Powerful and Controlled Bass: 18-inch active subwoofer designed to deliver clear, defined, and deep bass even at high levels.


• Integrated Full DSP: settings accessible via the color LCD screen (6-band parametric equalizer, low-pass filter, delay) to adapt the subwoofer to any configuration.


• Bluetooth Low Energy Control: system control and management via the JBL Pro Connect app, with control of up to 10 speakers.


• Roadworthy Design: 18 mm birch enclosure, optimized reinforcements, silent fanless operation, and 7-year warranty.

A New Step in the PRX900 Series: "Pro" Portability Without Compromise

The JBL PRX918XLF is part of the PRX900 series, designed to take portable professional sound reinforcement to the next level. The goal is clear: combine advanced acoustics, high power, modern DSP, and durability suited to field conditions. Within the range, this 18-inch subwoofer is a versatile solution to complement a full-range system in mobile performances as well as installations, maintaining a punchy sound signature and quick setup.

Who Is It For and What Are Its Uses? An Active Subwoofer Tailored for Stage, DJs, and Events

The PRX918XLF is aimed at DJs, bands, concert venues, rental providers, and corporate AV teams who need bass capable of "filling the room" while remaining controllable and coherent with the rest of the system. Its powered subwoofer format facilitates integration into a portable setup (transport, cabling, tuning), and its power reserve makes it equally relevant in installed configurations when a solid foundation is needed for live music, electronic, pop, hip-hop, or any application requiring impactful low-end.

DSP, Control, and Acoustics: Precision, Impact, and System Coherence

Next-Generation 18-Inch Driver and Optimized Port

At the heart of the PRX918XLF is an 18-inch ferrite magnet woofer (918SG), paired with an FEA flared port design aimed at reducing air noise and distortion. The result: cleaner, more intelligible, and tighter bass, with a smooth low-frequency extension, useful for improved listening comfort and performance efficiency.

Class D Amplification: Efficiency and Headroom

The lightweight and efficient Class D amplification provides the power needed to handle peaks and maintain stable bass. The PRX918XLF is rated at 2,000 watts peak and 1,000 watts RMS, with a maximum sound pressure level of 134 dB. This combination allows for impactful bass without sacrificing definition, especially during prolonged system use.

DSP Settings Accessible via Screen and App

The DSP suite is accessible from the built-in color LCD screen or via the JBL Pro Connect app. You have a 6-band parametric equalizer for system tuning and tone control, a low-pass filter to cleanly set the crossover with full-range speakers, and delay. DriveRack technology adds precise time alignment capabilities, with speaker delay adjustable in 100-microsecond increments, handy for optimizing coherence between subs and tops depending on layout.

JBL Pro Connect: Multi-Speaker Management and Advanced Features

Thanks to Bluetooth Low Energy control, the JBL Pro Connect app allows you to manage hardware and DSP for up to 10 speakers, handle application-specific functions (speaker snapshots, grouping), and integrate the subwoofer into setups including JBL EON ONE MK2, PRX ONE, and EON700 systems. A real asset for gigs where bass adjustments need to be made quickly depending on the venue, music style, or audience density.

A Durable (and Great-Sounding) Enclosure

The PRX918XLF is housed in an 18 mm birch plywood enclosure, with optimized bracing for a smoother low-frequency response and enhanced durability. Side handles facilitate handling, the M20 pole cup allows for pole mounting, and silent fanless operation is an advantage in environments where mechanical noise is undesirable. All backed by a seven-year warranty.

Technical specifications

Battery	No	Cutaway	No
Number of channels	1 channel	Speaker structure	wood
Bluetooth	No	Inputs	combo XLR/jack
Speaker diameter	18"	Outputs	XLR
Number of speakers	1	Color	Black
EQ	Yes	Power output	1000 W

Woofer	18-inch ferrite magnet 918SG	Delay	20 ms
FEA flared port design	reduces air noise and distortion	DriveRack technology	speaker delay up to 180 ms in 100-microsecond steps for precise time alignment
Frequency response	30 Hz-110 Hz @2pi (-10 dB); 35 Hz-92 kHz @2pi (-3 dB)	Optimized presets	matching with full-range speakers
Maximum SPL	134 dB	Control via JBL Pro Connect app	full system control up to 10 speakers, integration with JBL EON ONE MK2, PRX ONE, and EON700, "speaker snapshots" and grouping functions
Amplification type	lightweight and efficient Class D	Enclosure	18 mm birch plywood
Power	2,000 watts peak / 1,000 watts RMS	Reinforcements	optimized for smooth low-frequency response
Silent operation	fanless	Handles	two side handles
Ultra-low system latency	under 1 ms	Mounting	M20 pole cup
Color LCD screen	access to full DSP suite	Net weight	40.7 kg (89.7 lbs); gross weight: 47.5 kg (104.7 lbs)
Parametric equalizer	6 bands	Dimensions	693 mm x 591 mm x 654 mm (27.3 in x 23.3 in x 25.7 in) (H x W x D)
Filter	low-pass	Shipping dimensions	732 mm x 703 mm x 766 mm (28.8 in x 27.7 in x 30.2 in) (H x W x D)