JBL Professional JBL SRX828SP Powered dual 18-inch subwoofer

The SRX828SP is the self-powered dual 18-inch subwoofer in the SRX800 line. Two Differential Drive 18-inch woofers run on 2,000 W peak of Crown amplification for 141 dB at one metre, with response from 29 Hz at -10 dB.

Amplification is Crown DriveCore Class D and the DSP is fully user-configurable: 20 parametric EQ filters, speaker delay and 50 preset slots, set from the rear LCD or over network control. The back panel is printed in glow-in-the-dark ink for dark stages. Input is a Neutrik combo jack with two XLR outputs for looping. The cabinet is 18 mm DuraFlex-coated plywood and takes the JBL WK-4S caster kit, which you will want at 145 lb.

Type	Powered dual 18-inch subwoofer
Amplifier design	Class D, 2000 W peak
Maximum SPL (1 m)	141 dB
Frequency range (-10 dB)	29 Hz - 150 Hz
Frequency response (-3 dB)	35 Hz - 120 Hz
LF drivers	2 x 18-inch Differential Drive
DSP	20 parametric EQ filters, speaker delay, 50 preset slots
Inputs / outputs	Neutrik quarter-inch / XLR combo input; 2 x XLR output
Enclosure	18 mm DuraFlex-coated plywood; accepts JBL WK-4S caster kit
Dimensions (H x W x D)	681 x 1205 x 574 mm (26.79 x 47.42 x 22.57 in)
Net weight (each)	65.9 kg (145 lb)