QSC LS218 Active Line Array Subwoofer

The LS218 doubles up to dual 18 inch drivers behind a 5000 W Class D amplifier, reaching 141 dB peak SPL with the same Acoustic Linear Phase design as the LS118 for clean alignment against LA108 or LA112 tops. A DEEP mode extends low-frequency extension further when a room calls for it, and two or more LS218s can run cardioid to keep low end off the stage and out of the back of the room.

Like the rest of the L Class line, daisy-chain connections carry analog audio, Dante digital audio, and PowerCON TRUE1 AC power from cabinet to cabinet, so a subwoofer array needs only one feed in. It ground-stacks or arrays with the LA-series tops via the same rigging hardware, and the QSC SysNav app handles system configuration and monitoring.