QSC PL-SUB18 Passive 18" Installation Subwoofer, Black

For professional AV and security environments that demand authoritative low frequencies, the QSC PL-SUB18 passive 18-inch installation subwoofer delivers punch, impact and reliability. Built around an 18" LF transducer with 750W RMS capability, the PL-SUB18 produces deep, controlled bass that improves speech intelligibility for paging and monitoring as well as immersive low end for live events. Its weatherized IP54 wooden enclosure lets system integrators deploy the cabinet in indoor and protected outdoor spaces—ideal for auditoriums, stadium concourses, and security operation centers.

Integration with the Q-SYS ecosystem enables selectable omnidirectional or cardioid radiation (requires multiple units), giving you precise coverage control to minimize bleed into surveillance microphones or adjacent zones. The unit is flyable with PL-LA12 arrays for scalable hangs and a tidy aesthetic. At roughly 102 lb in a compact footprint, the PL-SUB18 balances power and practicality so facilities teams and integrators can specify dependable sub-bass without overbuilding.

Specify the QSC PL-SUB18 for pro AV, paging, security, or surveillance deployments—contact us to request a quote or wholesale pricing for your next installation.

• Powerful, room-filling low end from an 18" driver and 750W RMS that enhances music, paging and monitoring clarity
• IP54 weatherized enclosure for reliable indoor and protected outdoor installs in auditoriums, arenas, and security operation centers
• Selectable omnidirectional or cardioid radiation via Q-SYS for focused coverage and reduced spill into surveillance or monitoring zones
• Compact, flyable design integrates with PL-LA12 arrays to save rigging time and maintain a clean, professional install
• Designed for pro AV and security applications—delivers consistent bass for paging, public address, and live reinforcement