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QSC KSUB Dual 12" Powered PA Subwoofer


(3 reviews)


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MSRP: $1,235.00 $1,079.99 Save : $155.01 (13%)
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MSRP: $1,235.00 $1,079.99 Save : $155.01 (13%)
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The New Standard in Active Loudspeakers. The QSC KSub is a dual 12-inch, 4th order bandpass active subwoofer system featuring an all-new 1000 Watt QSC Class D power module outputting a remarkable 130 dB (peak). The KSub delivers low-frequency extension down to 44 Hz. Extensive DSP featuring Intrinsic Correction(TM) and DEEP(TM) provide for levels of total sonic performance that defy the system's size and weight while GuardRail(TM) protection, first introduced on the GSX Series amplifiers to protect both the amplifier module and your performance from unnatural and destructive clipping.

Combo XLR and 1/4" TRS inputs accept both Mic and Line Level input while a pair of direct outputs are also provided on each channel for additional output flexibility. The rear-panel LF switch can be set to NORM, DEEP for an additional measure of bass extension without over-excursion or sonic degradation. The LED switch can be set to POWER, illuminating the front-mounted LED when the unit is powered on, OFF for applications where it is not desirable to illuminate the front LED, or LIMIT which indicates to the system operator that the clip limiter circuit has been engaged during operation.

The entire system is housed in a rugged birch enclosure with a professional appearance that is at home in any vertical or horizontal application. Ergonomic aluminum handles and four heavy-duty, low-noise casters complete the package for ease of transport and long-term durability. The KSub also features a unique threaded pole mounting system. Securing the threaded speaker pole (included) to the receptacle allows a speaker enclosure with a standard pole cup to mount securely and wobble-free above the subwoofer. 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.

Things You Will Get:

  • Speaker Cabinet
  • Power Cable
  • Manual

Put's the "BOOM" in my business


I found it hard to believe when I saw this for the first time online that it could really put out that much bass. I mean come on, its two twelves, what could it really do? How about knock things off of shelves in my basement, rock the house wherever I DJ, and carry OUTSIDE whenever I run sound for my bands and other bands! This thing is AMAZING! Its so mobile, perfect for any band on tour up to medium sized venues, and ESPECIALLY PERFECT for Mobile DJ's. This has really put a "boom" in my business and I can't wait to add another one to my rig. On a technical note, this Subwoofer's 1000 watt amp is one of the best active systems I've ever worked with. Its limiter does a great job with keeping the unit from pushing to hard and the multifunctional LED at the front makes it easy to see when It's limiting wherever you may be in reference to it. Also, IT NEVER GETS HOT! I've run this thing for hours at a time and it still stays cool. Oh, and the wheels are a nice touch!

M.C. Massok

West Point, VA


Superb Sub


Purchased this and a set of QSC HPR122i speakers from Sam Ash... WOW.. great sub and an excellent sound. Very tight bass sound with alot of punch to it and plenty of bottom end for 12's. At this point I wouldn't buy any other speaker or amp other than QSC. Exceptional quality for the $$$.


Sarasota FL


A masterpiece


this sub hits low for being a 2 12" bandpass subwoofer. in music it hits loud and clear with no boomy effects or stuff like that very happy with it.

juancho G

miami, fl


KSUB Dual 12" Powered PA Subwoofer

5.0 3


Series K
Other Features Thermal limiting, output overcurrent, overtemperature muting, GuardRailâ„¢
Model KSUB
Warranty Info:

KSUB Dual 12" Powered PA Subwoofer

The manufacturer's warranty covers parts and labor for six years from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.