The QSC KS118 is a single 18″, quietest subwoofer packs maximum peak performance into the smallest available space from legacy manufacturer for any high power output in low frequency bass. A high-power Neodymium, long excursion 18-inch woofer is used in this professional active subwoofer to deliver a precision frequency response of between 38Hz-125hz and peak power output at level of up to 3600W. Crafted in American-made heavy-duty birch plywood enclosure construction, employing advanced DSP digital processing and driven by a new Class D amplification platform, the 18.0 delivers powerful low-frequency impact with exceptional depth response for large-scale live performances or installations outdoors.

A variety of low-frequency modes and polarity control allows sound system engineers to optimise subwoofer configuration for a given venue. The M20 professional rigging points and the sturdy polyurea-coated enclosure are made to resist a range of harsh conditions and installation specifications, and QSC Network Manager guarantees smooth system monitoring. The KS118 represents QSC's technological leadership in the industrial subwoofer field, providing the ultimate low-frequency experience and reliability of American heavy-industry audio technology for professional audio applications around the world.