JBL SRX818S 18'' Passive Subwoofer - Long & McQuade Music Educator Site
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JBL SRX818S 18'' Passive Subwoofer

Departments > Pro Audio & Recording > Subwoofers > Unpowered Subwoofers > JBL > SRX818S 18'' Passive Subwoofer
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SKU: # 504030
Model: #



SRX818S is a single 18 subwoofer for concert, touring, or installed use. Featuring a standard M20 pole cup for use with top boxes, indexing feet for stacking in both the standard and cardioid position, and a 136dB max SPL, the SRX818S is an ideal solution for musicians, bands, and DJs, concert use, public speaking, or installations such as performance venues, corporate spaces, educational facilities or houses of worship. Tunings and presets are available for Crown ITech HD and XTI 2 amps as well as dbx VENU360 signal processors


  • Premium JBL Transducers

  • Rugged, versatile enclosures

  • Tunings available for Crown amps and dbx signal processors

  • Fully supported in Audio Architect

  • Power Handling: 2400W Peak, 1200W Program, 600W Continuous

  • Frequency Range: 28Hz-150Hz

  • Frequency Response: 45Hz-150Hz

  • Max SPL: 135dB

  • Amplification options: Passive

  • 2279 LF 8 Ohm 18" Woofer


- Live performance systems.
- Mobile and fixed DJ systems.
- Sound system rental and tour.
- Permanent installations.


System Type: Passive 18", subwoofer system
Maximum SPL Output: 135dB
Frequency Range (-10dB): 28hz - 150hz
Frequency Response (- 3dB): 45hz - 150hz
Sensitivity (1W/1m): 96dB
System Power Rating: 2400W Peak , 1200W Program, 600W Continuous
Nominal Impedance: 8 Ohm
Connectors: NL4 Input, NL4 Loop-thru (+/-1 or +/-2 Selectable)
Operational Modes: Passive
LF Driver: 2279H
Crossover Frequency: 80hz
Enclosure Material: 18mm plywood
Suspension/Mounting: M20 Threaded Pole Mount
Casters: Accepts JBL WK-4S Kit
Handles: 4
Finish: Obsidian Duraflex finish
Grille: Powder coated, Obsidian, 14-gauge perforated steel with acoustically transparent black cloth backing
Dimensions (L x W x H): 26.89" x 26.92" x 22.62" (683mm x 684mm x 575mm)
Weight: 78.0 lbs (35.4kg)
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