QSC KS118 18" Powered 3600W Subwoofer

When powerful, reliable low-frequency performance matters, the QSC KS118 18-inch powered subwoofer delivers the punch and control pro AV teams demand. Designed as a high-output pro subwoofer, the KS118 pairs a long-excursion 18" driver with a 3600W Class D amplifier to produce deep, articulate bass down to about 41 Hz—ideal for clubs, corporate AV, mobile entertainers and integrated security paging. Selectable DEEP mode and adjustable crossover/delay let you fine-tune the low end to match main speakers or to emphasize sub-bass in experiential environments. The KS118 also supports omni-directional or cardioid radiation patterns (cardioid requires a minimum of two units), helping reduce rear energy for improved monitoring and surveillance playback areas. Built for installers, it offers vertical or horizontal deployment, M20 pole mounting and heavy-duty casters for fast setup and reliable transport. Whether you’re upgrading a venue sound system, outfitting an AV/surveillance control room, or adding robust paging to a security network, the QSC KS118 provides pro-grade bass performance and integration flexibility. Contact us to spec the KS118 for your next project or demo it in your facility.

• Powerful, low-end impact: 3600W Class D amplification delivers deep, authoritative bass so your mixes, live events and paging messages cut through rooms and crowds.
• Punch and accuracy in a compact package: 18" long-excursion driver produces tight, controlled low frequencies for consistent performance in clubs, theaters and AV installs.
• Flexible deployment: vertical or horizontal mounting, M20 pole receiver and adjustable crossover/delay simplify integration into existing sound and security paging systems.
• Tunable coverage: selectable omni or cardioid modes (cardioid requires two units) reduce unwanted bleed and improve bass control for sensitive monitoring or surveillance playback areas.
• Durable, pro-ready design: rugged painted-wood enclosure and low-noise casters provide roadworthy reliability and a refined appearance for fixed installs or rental fleets.