JBL SRX928S Dual 18" 2500W Powered Subwoofer

The JBL JBL-P3243MX is a dual 18 inch powered subwoofer that delivers the kind of deep, clean bass professionals rely on for concerts, clubs, and fixed installations. Rated at 2500 watts, it supplies more than enough headroom to keep low frequencies solid and punchy even when the mix gets demanding.

Inside the cabinet, each 18 inch driver uses JBL’s patented Differential Drive technology. This approach manages heat efficiently and allows a wider dynamic range, so the sub keeps performing consistently during long shows or extended sessions. An integrated Class D amplifier works alongside onboard DSP, giving you precise control over crossover points, delay, and limiting without the need for external processing.

Setup is straightforward. A rear-panel LCD offers quick access to presets, and when you want deeper control, free software for Windows, macOS, and iPadOS lets you tune the system from your laptop or tablet. The cabinet supports both omnidirectional and cardioid configurations, making it easy to tailor coverage for front-of-house, side fills, or noise-sensitive stages.

The SRX928S cabinet design improves airflow, so the drivers move freely with less turbulence and reduced distortion. Pair the sub with SRX900 full-range enclosures for a coherent, scalable system that can be ground-stacked for small venues or flown for larger rooms and outdoor events.

Touring sound companies, houses of worship, theaters, and event production teams will appreciate the balance of power, control, and portability. At 22.2 inches tall, 47.4 inches wide, and 26.8 inches deep, the enclosure fits easily into truck packs, and its 155-pound weight is manageable for two experienced crew members or a lift assist.

• Dual 18 inch JBL Differential Drive woofers
• Up to 2500 watts of onboard Class D power with integrated DSP
• Rear-panel LCD for quick access to presets and system settings
• Compatible control software for Windows, macOS, and iPadOS
• Seamless integration with SRX900 full-range loudspeakers
• Supports omnidirectional or cardioid array configurations
• Advanced airflow cabinet design minimizes turbulence and distortion
• Can be ground-stacked or flown with optional hardware
• Dimensions: 22.2 in H x 47.4 in W x 26.8 in D
• Weight: 155 lb