QSC KS212C K Cardioid Powered Subwoofer

Compact with Cardioid Dispersion

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What's in the box:

  • KS212C K Cardioid Subwoofer
  • 6-Year Warrenty


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Built to make thunder!

The QSC KS212C subwoofer speaker 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 QSC KS212C K Cardioid 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
  • HxWxD = 24.5-inch x 15.5-inch x 33.5-inch (622 x 394 x 851 mm)
  • Net Weight: 40.1 kg (88.5 lbs)

Specifications for the QSC KS212C

{ "Configuration" : "Dual 6th-order bandpass cardioid subwoofer", "LF Transducer" : "2 x 12-inch (305 mm), cone", "Frequency Response (-6 dB)" : "44 Hz - 104 Hz", "Frequency Range (-10 dB)" : "39 Hz - 118 Hz", "Nominal Coverage Angle" : "180° Cardioid (15dB rear rejection @ 70Hz)", "Maximum Rated SPL" : "132dB @1m, peak", "Amplifier" : [ "Class D", "2 x 1800W (peak)" ], "Cooling" : "Low-noise, variable speed fan", "Controls" : [ "Power", "Gain", " Rotary encoder", "2 x 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", "Enclosure Details" : { "Enclosure" : "15mm birch plywood", "Color" : "Black (RAL 9011)", "Grille" : "Internal woofer cover", "Dimensions (HWD) inches" : "24.5-inch x 15.5-inch x 33.5-inch", "Dimensions (HWD) mm" : "622 mm x 394 mm x 851 mm", "Net Weight" : "40.1 kg (88.5 lbs)", "Shipping Weight" : "48.5 kg (107 lbs)", "Regulatory" : "CE, WEEE, UL, CHina RoHS, RoHS II, FCC Class B", "Optional Accessories" : [ "KS212C Cover, KS-LOC Lock-Out Cover", "SP-16X Extension Pole" ] } }

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