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QSC KSub

Item ID: KSub

1,000-watt Subwoofer with Dual 12" Low-frequency Drivers

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  • Retail Price$1235.00
  • Sweetwater Savings-$105.01
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  • Sale Price:$1129.99
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From Our Research Team:

Compact yet Powerful Active Subwoofer from QSC

The KSub — a member of QSC's K Series — offers impressive sound quality, 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 combo XLR and 1/4" inputs can handle either mic or line-level inputs, making the KSub a great addition to your rig.





QSC KSub Powered PA Speaker at a Glance:
  • Birch cabinets for premium sound
  • I/O

Birch cabinets for premium sound
The KSub is a dual-12" bandpass design, constructed of premium birch and includes high-quality, low-noise casters. The subwoofer features a threaded pole receptacle for a positive, wobble free connection to a threaded speaker pole (included).

I/O
Combo XLR and 1/4" TRS inputs accept both Mic and Line Level inputs. Up to three audio sources can be mixed internally and summed to a balanced output for "daisy-chaining" of multiple units. Separate direct outputs are also provided on each channel for additional output flexibility.

QSC KSub Powered PA Speaker Features:
  • Dual 12" LF drivers
  • 1,000 watt, efficient and light-weight class-D power module
  • Locking IEC power cable
  • XLR and 1/4" connectors
  • Mic/Line and Line inputs with Loop-thru connectors and independent level controls.
  • Threaded pole socket for solid, secure pole mounting
  • 3" Casters

Big sound from a compact speaker with QSC's KSub!
Specification Detail
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
Manufacturer Part Number KSUB

KSub Image Gallery

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Reviews

based on 17 reviews

Wonderful! Wonderful!

by Jim from United States
December 18, 2012
Music Background: Live Sound Engineer, Musician, Artist
I bought one to go with the pair of K12s that I have. Wonderful! I needed to feel in the low end so I could push the K12s up where they belong. They did that magnificently! My group does Southern ... read more [+]gospel is small venues and it provides a very clean punch down low. I may get a second one sometime just to balance it out, but for the venues we use it for, I am not sure that I need it, unless I was to go outside. If I were doing rock music I would need 2 of them for sure or move to the KW181 sub. But this sub is perfect for what I am using it for! I have never liked a muddy sub which everyone seems to be running. This thing is really clean and is tuned to the K12. Beautiful sound! close [-]

Wonderful leap forward for my band!!!

by Shawn Beckner from Charleston, SC
October 14, 2012
Music Background:
My "local bar band" has been stepping it up lately, so we bought a pair of K12's and one Ksub for some weddings. Great decision. Easy load in and load out. The sound was awesome...best we've ever soun... read more [+]ded. The Ksub is a very professional sounding piece of audio equipment. Worked great with the mains. Made the kick drum kick and the bass guitar (me) sound big and phat. Sax/guitar/vocals went through the mains. We ran music through everything during breaks. Sounded like a high-fi home audio system...only MUCH BIGGER.

I gotta say...I read some of the Ksub reviews on here and I almost went with the 18 inch QSC. So glad I didn't. Easier to transport, and for our needs this is more than adequate. We played with it in front of a 150 person event, and then a 200 person wedding reception the next day. The dance floor was rocking both nights. Not the right sub if you're a DJ rocking the sub frequencies at a 500 person event, but if you're a band that plays wedding events and medium sized clubs this is for you. close [-]

Wonderful leap forward for my band!!!

by Shawn Beckner from Charleston, SC
October 14, 2012
Music Background:
My "local bar band" has been stepping it up lately, so we bought a pair of K12's and one Ksub for some weddings. Great decision. Easy load in and load out. The sound was awesome...best we've ever soun... read more [+]ded. The Ksub is a very professional sounding piece of audio equipment. Worked great with the mains. Made the kick drum kick and the bass guitar (me) sound big and phat. Sax/guitar/vocals went through the mains. We ran music through everything during breaks. Sounded like a high-fi home audio system...only MUCH BIGGER.

I gotta say...I read some of the Ksub reviews on here and I almost went with the 18 inch QSC. So glad I didn't. Easier to transport, and for our needs this is more than adequate. We played with it in front of a 150 person event, and then a 200 person wedding reception the next day. The dance floor was rocking both nights. Not the right sub if you're a DJ rocking the sub frequencies at a 500 person event, but if you're a band that plays wedding events and medium sized clubs this is for you. close [-]

Great Purposeful Sub!

by Kahuku1 from Hawaii
September 16, 2011
Music Background: Weekend Performer
I used to gig with just mains and then I recently added the K-Sub. The difference was night & day. Hit the high-pass filters on the mains and your system actually runs louder & cleaner with less str... read more [+]ain because the K-Sub will take the "lows" burden off of the mains. The K-Sub is meant for small to medium venues when you just want to really fill the lower spectrum of your sound and not shake the dentures loose off grandpa! The K-Sub give me a tight, punchy bass and made my sound really full. So then picked up the KW 181 when I need earth-shaking bass. Now I have the beauty & the BEAST....the best of both worlds! Great Job QSC!! close [-]

Sweetwater Advice

Ron Daniel
In my live PA rig, I am running a KSub and two K12s. WOW. Three thousand watts of the BEST sound I have ever heard, and it all fits conveniently into the back of my car. Not only is the KSub a thunderous presence, but after the gig, I just flip it onto its castered back, set the two K12's on top, and wheel them out. Teardown at 2:30am has never been easier!
Read more reviews

Also popular

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

QSC KSub

Today's Payment: $386.66
Includes $10 processing fee
Payment 2: $376.66
In approx. 30 days
Payment 3: $376.66
In approx. 60 days

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