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QSC KSub 1000 Watt Powered 2-way 12” Subwoofer

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Item#: KSUB
UPC: 684284055323
Availability: In Stock Online
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About This Product

QSC KSub 1000 Watt Powered 2-way 12” Subwoofer

The QSC KSub Powered Subwoofer is the ideal supplement to QSC K Series 2-way speakers for live reinforcement of bass instruments and drums, or higher-level playback of recorded music. Its 1000W Class-D power module never fails to deliver. The KSub subwoofer's M20 threaded pole socket (pole included) provides a secure, wobble-free method of elevating a mid-high speaker over the subwoofer. The KSub subwoofer's compact footprint won't take over the stage, dance floor, or seating area of smaller venues. A pair of high-power 12" speakers in an optimized band-pass enclosure will handle everything the 1,000-watt power module can give them. Compact in size, the QSC KSub has ergonomically designed handles and 3" noise-free casters ease load-in and load-out.

Ksub Features:

  • 2 x 12” Woofers.
  • 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.
  • Comfortable ergonomic handles.
  • Threaded pole socket with speaker pole included.
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 / ¼": 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/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 - 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

The KSub Box includes
(1) Subwoofer system
(1) Locking power cable
(1) Euro-style Connector Plug, 3-pin
(1) Speaker mounting pole (35 mm diameter, 26.4 in / 67 cm long, M20 thread)
(1) K Series Hookup Drawings
(1) Warning Information Sheet