QSC KS212C 3600W Active Cardioid Subwoofer (Factory Re-Certified)

  • $1,399.99

This item is previously USED and has been re-certified by our in-house technicians. It carries a 30 day non-DOA guarantee from the date of purchase.

The KS212C subwoofer represents the world’s first-in-class single-box powered cardioid subwoofer solution for highly portable entertainment and installation applications.

A breakthrough in innovation and design, the 3,600 Watt KS212C subwoofer uniquely provides all the benefits of cardioid deployment in a single, compact enclosure. “Keeping bass in its place” for mobile entertainers, AV production and rental professionals, as well as modestly-sized performance venues, the KS212C subwoofer is unparalleled in its ability to manage low frequencies on the stage, or any application where undesirable low frequency energy needs to be minimized.


  • 3600 Watt Class D power module
  • Dual 12-inch long excursion drivers; Dual 6th order band-pass design
  • 15 dB SPL attenuation front-to-rear
  • Two M20 threaded sockets (one on top, one on side) accept 35 mm speaker pole
  • Four low-noise, heavy-duty casters


  • Configuration : Dual 6th-order bandpass cardioid subwoofer
  • LF Transducer : 2 x 12” (305 mm), cone
  • Frequency Response (-6 dB) : 44 Hz - 104 Hz
  • Frequency Range (-10 dB) : 39 Hz - 118 Hz
  • Maximum Rated SPL1: 132dB @1m, peak
  • Amplifier: Class D 2 x 1800W (peak)
  • Cooling: Low-noise, variable speed fan
  • Controls : Power, Gain, Rotary Encoder, 2x Selection Buttons
  • Indicators: 2 x Power LED (front and rear), Input Signal LED, Limiter active LED
  • Connectors: 2 x locking XLR/F ¼” combo, 2 x XLR/M (Loop-thru Output), 1 x locking IEC power connector.
  • AC Power Input: Universal power supply 100 – 240 VAC, 50 – 60 Hz
  • AC Power Consumption: 1/8th power


(1) QSC KS212C K Cardiod Subwoofer
(1) Speaker Pole for attaching mid/hi speaker above subwoofer
(1) Power Cable
(1) User's Manual

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