The SRX818S is a passive subwoofer equipped with an 18-inch driver, designed for concert, touring, and installed sound applications. It features a standard M20 pole cup for mounting on top boxes and includes indexing feet to support stacking in both standard and cardioid configurations. The subwoofer has a maximum sound pressure level (SPL) of 136 dB.

• Premium JBL transducers
• Rugged, versatile enclosures
• Tunings available for Crown amplifiers and dbx signal processors
• Fully supported in Audio Architect
• 2279 LF 8 Ohm 18” woofer

System Type	Passive 18” subwoofer
Maximum SPL Output	123 dB continuous, 129 dB peak
Frequency Range (-10 dB)	28 Hz - 150 Hz
Frequency Response (-3 dB)	45 Hz - 150 Hz
Sensitivity	95 dB
System Power Rating	2400W peak, 1200W program, 600W continuous
Nominal Impedance	8 Ohm
Inputs	NL4 input, NL4 loop-through (+/-1 or +/-2 selectable)
Operational Modes	Passive
Crossover Frequency	80 Hz