JBL Professional JBL SRX828S Passive dual 18-inch subwoofer

The SRX828S is a dual 18-inch passive subwoofer built wide so a pair of top boxes can be splayed across it. Two JBL 2279H woofers give 98 dB sensitivity and a 1,200 W continuous rating at 4 ohms, reaching 30 Hz at -10 dB with a fixed 80 Hz crossover.

Indexing feet let cabinets stack in the standard or the cardioid position, eight handles are moulded in, and the enclosure accepts the JBL WK-4S caster kit - useful at 137 lb. Connection is NL4 in and NL4 loop-through with selectable pins. An external amplifier is required.

Type	Passive dual 18-inch subwoofer
Nominal impedance	4 ohms
System power rating	1200 W continuous / 2400 W program / 4800 W peak
Maximum SPL	129 dB continuous, 135 dB peak
Sensitivity	98 dB
Frequency range (-10 dB)	30 Hz - 150 Hz
Frequency response (-3 dB)	47 Hz - 120 Hz
LF drivers	2 x JBL 2279H 18-inch
Crossover frequency	80 Hz
Inputs	NL4 input and NL4 loop-through, +/-1 or +/-2 selectable
Enclosure	18 mm DuraFlex-coated plywood, Obsidian finish; 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	62.1 kg (137 lb)