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QSC KSUB 12" Powered Subwoofer

  • Product Description
  • Product Video
  • Product Accessories
  • Warranty

QSC KSUB Features
Lightweight portable powered speakers with legendary QSC amplifier power and reliability
1000 watt continuous Class D power module
Extensive DSP enhances system performance
Attractive and professional appearance
Rugged birch plywood enclosure
Comfortable ergonomic handles
Threaded pole socket with speaker pole included

The QSC KSub offers impressive audio fidelity, high wattage, and relatively light weight in an easy to transport package. Engineered by QSC's amplifier engineer team under the direction of Pat Quilter, the KSub incorporates new Class D power modules with extensive DSP processing employed throughout. The end result is a subwoofer that defies expectations based on its size and weight. The QSC KSub is a dual-12" bandpass design, constructed of premium birch and has high-quality, low-noise casters. The subwoofer features a threaded pole receptacle for a positive, wobble free connection to a threaded speaker pole (included). Remote gain control capability is offered via a potentiometer (not included) connected to the on-board Euroblock connector. In an installed application, multiple K Series speakers can be daisy-chained for total gain control from a single remote pot. Auto-standby mode is engaged after 5 minutes of inactivity.

Extensive DSP
DMT (Directivity Matched Transition) provides for matched LF and HF coverage across the entire listening area, eliminating unnatural "dead" or "hot" frequency zones.
Intrinsic Correction, first featured in our high-end line-array products maps 65-75 spacially-averaged measurements to IIR and FIR filters that actively adjust time, frequency and amplitude response to a maximally flat bandpass target. The result is a speaker that behaves equally well across the entire sound field.
DEEP and excursion limiting allow for extended low-frequency response by actively managing low-frequency transients without degradation of the underlying signal or adjacent frequencies.
GuardRail protection, first introduced on our GX Series amplifiers protects both the amplifier module and your performance from unnatural and destructive clipping.

QSC KSUB Specifications

K Series
Configuration 4th Order Bandpass
2 x 12" cone transducers
Frequency Response (-6 dB) 48 Hz - 134 Hz
Frequency Range (-10 dB) 44 Hz - 148 Hz
Maximum SPL1 130 dB peak
Power Output2 1000 W continuous Class D (2x500 W)
2000 W peak
Input Impedance (ohms) XLR / 1/4": 40k balanced / 20k 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/ΒΌ" 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 100 - 240 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
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

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QSC warrants its products to be free from defects for 3 years from the date of purchase.