QSC E118sw 18" Passive Subwoofer

The E118sw is QSC's direct-radiation subwoofer for the E Series line, built around a single 18-inch aluminum-frame driver with a 4-inch voice coil in a plywood enclosure. Its 4-ohm impedance lets one woofer run efficiently off a smaller amplifier channel than an 8-ohm design needs, and a threaded M20 pole socket with included speaker pole carries any E Series two-way box on top for a sub/satellite stack.

It takes 800 W continuous power (3200 W peak) and reaches 133 dB peak SPL at 1 meter with QSC processing, with dual NL4 connectors plus a barrier strip for input. Optional casters attach directly to the enclosure for rolling load-in and load-out, and QSC's own E118SW-CVR padded cover is cut to this cabinet with an access cutout that keeps the cover usable caster-side down.