JBL SRX818S 18" Passive Subwoofer System
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The JBL SRX818S delivers earth-shaking bass response that locks in with your rhythm section and gives music a physical presence audiences can feel in their chests. This subwoofer commands the low-end foundation in any performance space, translating every nuance of your low frequencies with clarity and control that keeps the pocket locked and defined even at high volumes. The tight, controlled reproduction makes this system equally capable anchoring live rock, reinforcing hip-hop and electronic beats, or extending full-range PA systems where serious bottom-end extension is non-negotiable.
Audio PerformanceThe SRX818S reaches a maximum SPL output of 135dB, delivering the headroom needed for large venues and high-energy applications. Its frequency range of 45Hz–150Hz (−3dB) and 28Hz–150Hz (−10dB) with 96dB sensitivity (1W/1m) ensures deep sub-bass extension without sacrificing definition, while the 80Hz crossover frequency integrates seamlessly with full-range speakers and other system components.
Design & Build QualityBuilt from 18mm plywood with a durable Obsidian Duraflex™ finish, the SRX818S features a heavy-duty 14-gauge perforated steel grille backed by acoustically transparent black cloth, ensuring rugged reliability in touring and permanent installation environments. Four handles and compatibility with the optional JBL WK-4S caster kit make transport and positioning manageable, while the compact footprint of 26.89" × 26.92" × 22.62" fits efficiently into venue layouts without sacrificing performance.
Key Features- Maximum SPL Output: 135dB
- Frequency Range (−10dB): 28Hz–150Hz
- Frequency Response (−3dB): 45Hz–150Hz
- Sensitivity (1W/1m): 96dB
- Power Rating: 2400W Peak, 1200W Program, 600W Continuous
- Nominal Impedance: 8 Ohm
- LF Driver: 2279H
- Crossover Frequency: 80Hz
- Connectors: NL4 Input and NL4 Loop-thru with +/−1 or +/−2 Selectable Configuration
- Enclosure Material: 18mm Plywood with Obsidian Duraflexâ„¢ Finish
- Grille: Powder-coated 14-gauge Perforated Steel with Acoustically Transparent Black Cloth Backing
- M20 Threaded Pole Mount with Four Handles and JBL WK-4S Caster Kit Compatibility
The SRX818S combines professional-grade reliability with the punch and precision that working musicians and system engineers depend on night after night.
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