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QSC KSub Active Subwoofer


The QSC K Series is quite simply The New Standard in lightweight powered loudspeaker systems. QSC engineers have created a new standard in Class D power modules unparalleled in the industry.
The KSub is a dual-12" bandpass design, constructed of premium birch and includes high-quality, low-noise casters. The subwoofer features a threaded pole receptacle for a positive, wobble free connection to a threaded speaker pole (included). 


  • Configuration: 4th Order Bandpass
  • Transducers: 2 x 12" cone transducers
  • Frequency Response: (-6 dB) 48 Hz - 134 Hz
  • Frequency Range: (-10 dB) 44 Hz - 148 Hz
  • Maximum SPL (1 meter): 130 dB peak
  • Amplifier Output: 1000 W Class D (2x500 W)
  • Input Impedance, XLR: 40k ohms balanced 
  • Input Impedance, ¼": 20k ohms unbalanced
  • Controls: Power, Gain, LF Mode (Normal/DEEP™), Polarity (Normal/Reverse), Front LED (On/Off/Limit)
  • Indicators: Power, Signal, Standby, Limit
  • Connectors: Dual balanced female XLR/¼" line level input, Dual Balanced male XLR full range line level out, Remote gain control, Locking IEC power connector
  • Cooling: On demand, 50 mm variable speed fan
  • Amplifier Protection: Thermal limiting, output overcurrent, overtemperature muting, GuardRail
  • Transducer Protection: Thermal limiting, excursion limiting
  • AC Power Input: Universal power supply 85 - 265 VAC, 50 - 60 Hz
  • AC Power Consumption:
    (1/8 Power) 100 VAC, 2.3 A
    120 VAC, 2.01 A
    230 VAC, 1.13 A
  • Enclosure:
    Material Painted birch plywood; Finish Black textured paint
  • Dimensions (HWD): 26" x 14" x 28.1" (including casters)
    (665 mm x 356 mm x 714 mm)
  • Weight (Net): 74 lb / 33.6 kg
  • Available Accessories: KSub COVER


List price: $1,235.00

Price: $1,079.99

You Save: $155.01 (13%)

Available for immediate shipping.
Includes FREE Ground Delivery
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QSKSUB - KSub Active Subwoofer
Price $1,079.99

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