JBL SRX818SP 18" Self-Powered Subwoofer System

The JBL SRX818SP is a self-powered subwoofer system designed to deliver deep, powerful bass that fills any space with rich low-end sound. Featuring an 18-inch driver and a peak power output of 1000 watts, it handles low frequencies down to 29 Hz, making it ideal for professional audio setups where impactful bass is essential.

This subwoofer is equipped with a Class D amplifier, which provides efficient power delivery without sacrificing performance. JBL’s Differential Drive technology helps maintain clear, distortion-free bass even at high volume levels, ensuring your sound remains tight and controlled. Whether you’re a DJ, musician, or running a professional sound system, the SRX818SP offers reliable performance for live events, tours, or permanent installations.

Controlling the subwoofer is straightforward thanks to the onboard LCD screen, which lets you adjust settings directly. For more advanced control, the system supports HiQnet networking, allowing remote adjustments to fit your specific audio environment. Connectivity options include XLR and 1/4-inch inputs, along with balanced XLR outputs, making it easy to integrate into a variety of setups and expand your sound system as needed.

Built with rugged plywood and featuring ergonomic handles, the SRX818SP is designed for both durability and portability. The M20 threaded pole mount adds flexibility, letting you position the subwoofer alongside other speakers for optimal sound distribution. This combination of power, control, and build quality makes the JBL SRX818SP a dependable choice for anyone serious about delivering professional-grade bass.

• 18-inch self-powered subwoofer delivering 1000 watts peak power
• Deep bass response down to 29 Hz for strong low-end impact
• Efficient Class D amplifier for reliable performance
• JBL Differential Drive technology ensures clear, low-distortion bass
• HiQnet network control enables remote adjustments
• Onboard LCD screen for easy, direct control
• XLR and 1/4-inch inputs with balanced XLR outputs for flexible connectivity
• M20 threaded pole mount for versatile speaker placement
• Durable plywood construction with ergonomic handles for portability
• Suitable for live events, DJ setups, tours, and installed sound systems