JBL-PRX818XLFW 1500W Self-Powered 18"Subwoofer System 

The JBL PRX818XLFW is a self-powered extended low-frequency subwoofer system. Featuring a JBL 18-inch woofer powered by a 1500-watt class-D amplifier, PRX818XLFW delivers incredible output in a lightweight and compact form factor. Designed and engineered with extended low-frequency, sub bass frequencies are provided with accuracy and power. You can apply it as a single sub in a sub/sat system, or even in a large scale sound reinforcement system because these lightweight subs are stackable, ensuring quick set-ups and tear-downs. 

High performance is further enforced in this subwoofer system with remote Wi-Fi control of onboard DSP EQ parameters. DSP at the core of it all features an input section to provide user selectable cross-over functionality, polarity optimisation, protection, dynamic limiting and discrete component optimisation. 

Product Features

• 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