QSC LS118 Active Subwoofer 18", 4KW

Engineered for professional AV, monitoring and security environments, the QSC LS118 active subwoofer puts powerful, controllable low frequency energy where you need it. This pro subwoofer combines a purpose-built 18" long-excursion driver with a 4,000W peak Class D amplifier to produce up to 138 dB SPL and extend authoritative bass down to 41 Hz, enhancing speech clarity, music impact and low-frequency cues in surveillance and command-center applications. QSC’s Acoustic Linear Phase (ALP) design makes the LS118 easy to integrate alongside LA series loudspeakers for a uniform listening experience, while Dante network audio, PowerCON TRUE1 power daisy-chaining and the SysNav app simplify configuration, monitoring and remote control for distributed installations. Use selectable cardioid mode to reduce rear spill in reverberant spaces or choose omni for maximum output. Built for the road and installed systems, the LS118’s rugged enclosure and heavy-duty casters ensure durability and mobility. Ideal for live sound, rental, fixed AV installs and security/surveillance control rooms—specify the LS118 to add precise, reliable low end to your system and contact us to configure yours.

• Powerful low-end impact: 4,000W peak Class D amplification and 138 dB peak SPL deliver deep, room-filling bass that improves intelligibility and presence for live events and control-room monitoring.
• Precision system integration: QSC Acoustic Linear Phase (ALP) design ensures coherent alignment with QSC loudspeakers for consistent coverage across venues and installations.
• Flexible deployment and control: Dante network audio, PowerCON TRUE1 daisy-chaining and SysNav app support fast setup, monitoring and remote configuration for AV, security and surveillance environments.
• Directional bass options: Selectable cardioid or omni modes let you maximize front-of-house output while minimizing spill to sides and rear—ideal for staged productions and sensitive monitoring rooms.
• Rugged, road-ready design: Long-excursion 18" driver, durable Polyurea-coated wooden enclosure and low-noise casters provide reliable performance in rental, fixed install and security command centers.