QSC KS212C 12" Active Cardioid Subwoofer with Dual Woofer Socket, 3600W, Black

Keep bass where it belongs: on the audience, not the stage. The QSC KS212C powered cardioid subwoofer is a single-box solution that gives sound contractors, rental houses and AV integrators precise low-frequency control for live events, houses of worship, theaters, and even security or monitoring suites where unwanted bass can mask critical audio cues. With a 3600W Class D power module driving dual 12in long-excursion drivers in a dual 6th-order band-pass layout, the KS212C produces reliable, punchy lows while maintaining linearity down to about 44 Hz and a controlled response up to 104 Hz. The built-in cardioid configuration provides up to 15 dB of front-to-rear attenuation, minimizing onstage energy and improving vocal intelligibility and microphone performance. Rugged casters, dual M20 pole sockets, and a compact footprint speed deployment for touring and installed systems alike. Backed by a 6-year warranty, the KS212C reduces service costs and keeps your fleet performing. Choose the KS212C to tighten your low end and streamline setup — ideal for pro audio, AV integration, and security monitoring installations.

• Keeps low-frequency energy controlled onstage and in-room with cardioid patterning for clearer monitoring and audience sound
• Powerful 3600W Class D drive delivers consistent, distortion-free bass for rental, installation, and security/monitoring applications
• Dual 12in long-excursion drivers and 6th-order band-pass design provide deep extension and impactful low-end down to 44 Hz
• Integrated dual M20 sockets and compact single-enclosure design simplify setup and pole-mounting for portable events or permanent installs
• Heavy-duty casters and a 6-year limited warranty reduce downtime and total cost of ownership for pro AV fleets