JBL SRX818SÂ Overview
The JBL Professional SRX818S – 18″ Passive Subwoofer System is designed for concert, touring, or installed applications. With a standard M20 pole cup for use with top boxes, indexed feet for stacking in both standard and cardioid positons, and a maximum SPL of 136 dB, the subwoofer is suitable for musicians, bands, DJs, PA systems, performance venues, corporate spaces, houses of worship, and more. A variety of tunings and presets is available for Crown ITech HD and XTI 2 amps as well as the dbx VENU signal processor.
Key Features
- Premium JBL 18″ Transducer
- Tunings for Crown Amps and dbx Venu360
- 2400W Peak, 1200W Program Power Handling
- 45 to 150 Hz Frequency Response
- 135 dB Maximum SPL
- Ergonomic Handles
- M10 Suspension Points
- M20 Pole Cup
- Indexed Feet for Stacking
- 18mm Plywood Construction








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