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Why We Love This Product!

Don't Hunt for the Red October...

The QSC KSub is the sub you've been looking for. If you've caught the buzz in the live sound world lately, then you've probably already heard about QSC's K series. On the other hand, if you've been living under a rock, then consider this your wake-up call. Like the rest of the K series, QSC's KSubs are simply unbelievable, delivering studio quality sound to the stage. Musician's love them because they make them sound good, engineers adore them because they pump up the mix, and audiences go nuts about about them because they bring out the lows without mucking up the sound.


If you're using other full range or top box speakers, or if you just want to add some huevos to your sound, tossing a QSC KSub or two into the mix will work miracles. These fully active, dual-12 bad boys add 1,000-watts of major punch. And thanks to their revolutionary Class D power amps, they sound more like they're pushing around 3-4,000W of juice. They come with threaded stand mounts and poles, so they'll fit right into your system. Plus, KSubs have combo inputs for mic- and line-level sources and outputs for daisy-chaining. A set of 3" casters is a real bonus too, for people who like their kidneys exactly where they are.

QSC KSub Powered PA Subwoofer Features at a Glance:
  • Dual 12" LF drivers
  • 1,000-watt, efficient and light-weight Class D power module
  • Locking IEC power cable
  • XLR and ¼" connectors
  • Mic/Line and Line inputs with Loop-thru connectors and independent level controls.
  • Threaded pole socket for solid, secure pole mounting
  • 3" Casters
QSC KSub Specs:
Powered Yes
Power Configuration Mono-amped
LF Driver Size 2 x 12"
Power Amp 1000W
Power Rating (Program) Self-powered
Peak Power Capacity Self-powered
Impedance Input: 40k balanced / 20k unbalanced
Frequency Range 48-134Hz (±6 dB)
Crossover Frequency 4th order bandpass
Maximum Peak SPL 130dB
Enclosure Material Plywood
Mounting Options Floor only (pole socket on top)
Inputs Dual balanced XLR/1/4" (line level)
Outputs Dual balanced XLR full range (line level)
Height 26"
Width 14"
Depth 28.1"
Weight 74 lbs

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See Also: Powered PA Speakers , QSC , QSC PA Subwoofers , QSC Active / Powered PA Speakers

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