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QSC KS212C - K Cardioid Subwoofer

Availability: Only 2 Left

Regular Price: $1,899.99

Special Price: $1,499.99

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Regular Price: $1,899.99

Special Price: $1,499.99

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- 12" inches active cardioid subwoofer
- 3600 W Class D amplifier module
- M20 fittings available for either horizontal or vertical position (included)
- Low-noise and effective cooling system   
- Four low-noise, heavy-duty casters 
- Amplifier protection rails – protects the amplifier when the unit is rolled off
- 18 mm Birch Plywood design


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.

Powered by a 3,600 Watt Class D amplifier, processed with the latest DSP technology, and featuring dual 12-inch long-excursion drivers each arranged in a 6th order bandpass chamber, these components all combine seamlessly to produce a staggering 15 dB more output at the front of the cabinet than at the rear. Highly portable, the cabinet features comfortable, aluminum handles and four, rear-mounted casters. Two M20 sockets accept a 35mm speaker pole in other horizontal or vertical orientation.

Key Features:

  • 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)
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 SPL1 132dB @1m, peak
Amplifier Class D
2 x 1800W (peak)
Cooling Low-noise, variable speed fan
Controls Power
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⁻ᶦⁿᶜʰ 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 18mm birch plywood
Color Black (RAL 9011)
Grille Internal woofer cover
Dimensions (HWD) inches 24.5-inch × 15.5-inch × 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
what's included
  • QSC KS212C Cardioid Subwoofer
  • Locking AC Power cord
  • 35 mm, M20, 915 mm (36 in) long Loudspeaker Pole
  • Quickstart Guide
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