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QSC KSub - Dual 12" 1000W Subwoofer System

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Regular Price: $1,235.00

Special Price: $1,079.99

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Regular Price: $1,235.00

Special Price: $1,079.99

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- Lightweight powered loudspeaker with dual 12” subwoofer drivers
- 1000-watt continous power
- Constructued of premieum birch plywood enclosure
- Ergonomic handles
- Threaded pole socket with peaker mounting pole included


QSC K-Series Subwoofer Loudspeakers 

For extra low-frequency extension and enhancement, the dual 12 inch QSC KSUB Powered PA Subwoofer is perfectly matched to the rest of the K Series. The K8, K10 and K12 all have a selectable high-pass filter for use with the subwoofer. The KSub includes a fixed low-pass filter so it will accept full-range input. Constructed of premium birch, the QSC KSub includes high-quality, low-noise casters and a threaded pole receptacle for a positive, wobble free connection to a threaded speaker pole (included).


  • Dual 12” subwoofer drivers
  • Maximum SPL 130 dB peak
  • Lightweight portable powered speaker with legendary QSC amplifier power and reliability
  • 1000-watt continuous Class D power modules in all models
  • Extensive DSP enhances system performance
  • Attractive and professional appearance
  • Comfortable ergonomic handles
  • Rugged birch plywood enclosure
  • Threaded pole socket
  • Speaker mounting pole included (35 mm diameter, 26.4 in / 67 cm long, M20 thread)
Configuration 4th-order bandpass

2 × 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 (2 × 500 W) 
2000 W peak
Input Impedance XLR / ¼": 40 kΩ balanced / 20 kΩ unbalanced
Controls Power, Gain, LF Mode (Normal/DEEP™), Polarity (Normal/Reverse), Front LED (On/Off/Limit)
Indicators Power, Signal, Standby, Limit

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 100–240 VAC, 50 to 60 Hz
AC Power Consumption
(1/8 of full 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) inches 26 × 14 × 28.1
(including casters)
Dimensions (HWD) mm 665 x 356 x 714
(including casters) 
Weight (Net) 74 lb / 33.6 kg
Available accessories KSub cover
what's included
  • QSC KSub
  • Subwoofer system
  • Locking power cable
  • Euro-style Connector Plug, 3-pin
  • M20 threaded loudspeaker pole
  • K Series Hookup Drawings
  • Warning Information Sheet
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