QSC SB-7218 Subwoofer

Add deep, reliable low-frequency impact to professional AV, cinema and security monitoring systems with the QSC SB-7218 Pro Subwoofer. This dual 18-inch pro subwoofer from QSC delivers robust, room-filling bass—driven by dual 700-watt transducers and 1200W RMS output—so critical media, paging and alert tones are heard with authority in control rooms, theaters and surveillance centers. A ported enclosure and 101 dB sensitivity make the SB-7218 efficient and punchy, while the response that reaches as low as 19 Hz (or below 25 Hz when used with the appropriate B6 filter) reproduces the lowest frequencies cleanly and accurately.

Built for demanding installations, the SB-7218 features vandal-resistant woofer mounting and an enclosure designed for long-term reliability in public or secure spaces. Integrators will appreciate the optional DCM and SF-3 signal processors for precise EQ, delay and protection when integrating into multi-zone AV, security or monitoring systems. Whether you’re upgrading a cinema, live-sound rig, or a security operations center, the QSC SB-7218 delivers the controlled bass and durability professionals require. Contact us to configure or order this subwoofer for your installation.

• Delivers deep, controlled low-end for immersive AV, cinema and security monitoring environments, ensuring clear bass impact without distortion
• Dual 700W transducers and 1200W RMS output provide reliable, high-impact performance for live events and permanent installs
• Extends to ultra-low frequencies (down to 19 Hz / below 25 Hz with B6 filter) for authoritative sub-bass that enhances speech intelligibility and alerts in monitoring rooms
• Rugged, ported enclosure with vandal‑resistant mounting hardware for dependable operation in high-traffic and secure installations
• System tuning flexibility via optional DCM and SF-3 signal processors enables precise integration into existing AV, surveillance, or security audio systems