QSC KLA181 Active Line Array Subwoofer

Bring the boom to your live shows and installed audio systems with the QSC KLA181 active line array subwoofer. This vented 18" sub packs 1,000 watts of continuous Class-D power to deliver chest-thumping low-frequency reinforcement down to 33Hz. QSC's DEEP DSP algorithm and GuardRail peak protection work in concert to optimize and safeguard performance. An energy-efficient Auto Standby mode engages after five minutes of inactivity, then awakens instantly when signal resumes.

DEEP DSP Algorithm Digs Deep

QSC's proprietary DEEP DSP algorithm actively manages low-frequency transients to extend bass response and reduce distortion. The result is a tight, musical low end with impact and depth for a listening experience that's felt as much as heard.

GuardRail Protection Keeps Things Safe

QSC GuardRail technology monitors amplifier performance in real time, preventing unnatural clipping that can damage components or reduce sonic integrity. You get full-throttle volume when you need it, with the assurance that your gear is protected.

Flexible Deployment Options for Any Application

The KLA181 can be ground-stacked, pole-mounted for free-standing use, or suspended in arrays of up to 480 lb. using the included M10 fittings or optional KLA AF12 frame. Multiple units can be daisy-chained for total gain control from a single remote pot. With powerCON In and Thru connections and an XLR input with loop-thru, setup is streamlined.

Roadworthy and Installation-Ready

From its tour-grade build to pro-tier components, the KLA181 is purpose-built to handle the rigors of live music and fixed installation. An impact-resistant enclosure, durable powder coat finish and robust threaded pole mount make it ideal for portable use or permanent deployment.