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QSC K12 12-Inch 2-Way K Series Powered PA Speaker

QSC K12 12-Inch 2-Way K Series Powered PA Speaker
QSC K12 12-Inch 2-Way K Series Powered PA Speaker
QSC K12 12-Inch 2-Way K Series Powered PA Speaker
QSC K12 12-Inch 2-Way K Series Powered PA Speaker
QSC K12 12-Inch 2-Way K Series Powered PA Speaker

QSC K12 12-Inch 2-Way K Series Powered PA Speaker

(32 Reviews)
We apologize, this product is no longer available.
Likely due to either replacement with a newer model or manufacturer discontinuation.
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QSC K12 Powered Speaker Produces "Club" Sound In Compact Enclosure!

Meet the new standard in powered speaker systems, the QSC K Series. This new standard in Class D power modules is breaking the traditional loudspeaker paradigm. Constructed from only the highest quality materials and cutting-edge design processes, the K Series delivers a powerhouse performance in both live sound and installation applications. Every model is fitted with the identical 1.75" tweeter and woofers of the same high caliber for unrivaled sound quality, regardless of speaker size.

The notion of using powered speakers for a permanent installation has been turned on its head, thanks to the K12. The auto-shutoff feature lets you rest easy in knowing that when the music shuts down, so does the power amp within the speaker. The integrated cooling fan ensures that you won't fall victim to equipment failure at the hands of extreme heat, even during the hottest of summer gigs. QSC's K-Series has managed to dummy-proof the PA system, engineering the crossover, limiter, and additional rack components into the speakers to provide you top-notch sound right out of the box.

Go beyond the rational limits of a compact speaker's sonic clarity and total output with QSC's unparalleled DSP processing. Includes a Combo XLR and 1/4" TRS inputs that accept both Mic and Line Level input, as well as a set of RCA phono inputs (except KSub)  for additional connectivity to portable MP3 players, CD players and line-level mixers. Mix up to three audio sources on each channel for additional output flexibility. On-board switches provide preset EQ curves: set your LF switch to NORM, DEEP for additional bass extension, or EXT SUB (fullrange models) for use with an external subwoofer. Use the front-mounted LED to indicate Limiting, or shut it on/off completely if you'd prefer.

Auto-standby mode is engaged after 5 minutes of inactivity. Remote gain control capability is offered via a potentiometer (not included) connected to the on-board Euroblock connector.

Foregoing traditional speaker plastics, the fullrange K-Series models are housed in rugged ABS enclosures, exuding an air of professionalism in any environment. The K Series offers ergonomic aluminum handles for easy transport and a rugged steel grille to ensure long-term use. Other features include a unique Tilt-Direct pole cup mounting system. Simply turn the dial to engage a 7.5 degree downward tilt allowing acoustic energy to be kept on the audience and off reflective surfaces for applications where maximum coverage from a high-positioned speaker is desired. The K SERIES M10 KIT (sold separately) or Yoke bracket (sold separately) allows K-Series speakers to be flown for install applications.

  • Features

  • Lightweight portable powered speakers with legendary QSC amplifier power and reliability
  • 1000 watt Class D power modules in all models (2x500 W)
  • Extensive DSP enhances system performance
  • Attractive and professional appearance
  • Rugged ABS enclosures (K8, K10 and K12)
  • Tour-grade 18 gauge steel grilles
  • Ergonomic handles with comfortable, non-slip grip
  • 35 mm pole sockets with Tilt-Direct™ (fullrange models)
  • M10 rigging points for suspended installation (fullrange models)
  • K10 and K12 perform as main PA or stage monitors

Extensive DSP

  • DMT™ (Directivity Matched Transition) provides for matched LF and HF coverage across the entire listening area, eliminating unnatural "dead" or "hot" frequency zones.
  • Intrinsic Correction™, first featured in our high-end line-array products maps 65-75 spatially-averaged measurements to IIR and FIR filters that actively adjust time, frequency and amplitude response to a maximally flat bandpass target. The result is a speaker that behaves equally well across the entire sound field.
  • DEEP™ and excursion limiting allow for extended low-frequency response by actively managing low-frequency transients without degradation of the underlying signal or adjacent frequencies.
  • GuardRail™ protection, first introduced on our GX Series amplifiers protects both the amplifier module and your performance from unnatural and destructive clipping
… [ More ]
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Questions & Answers
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 17 answers
Why did you choose this?
ProSound and Stage Lighting Store
I have heard these and needed to upgrade from my EV ZLX 15s. They were good but these are better.
CLAUDE C on Jan 14, 2017
I have heard these and needed to upgrade from my EV ZLX 15s. They were good but these are better.
CLAUDE C on Jan 14, 2017
Does this speaker have good bass?
null on Jun 29, 2010
BEST ANSWER: I'd recommedn adding a subwoofer for more bass.
I recently asked if I could connect the output of this into another powered speaker, I need to know which xlr out I would use, is it the one right below the input or the one called "post gain out"
Rick on Oct 22, 2012
BEST ANSWER: You can use either of those XLR outs. The two right below the inputs are direct outs for that channel; whereas the post gain is an after mix out. So lets say you have one input with a microphone and the other with your music you can send just the microphone or just the music or you can send the same mix you've created to your other powered speaker.
On 3/25/2010, you said that "the QSC K12 2 Way 12" Powered Loud Speaker will actually top out at around 1000 watts". So is 1,000 watts the K12's peak rating? How many continuous watts is the K12 rated for?
null on Apr 6, 2010
BEST ANSWER: The amplifier SPECIFICATIONS for the K12 2 Way 12" Powered Loud Speaker by QSC.

Power Output 1000 W Class D
(500 W LF, 500 W HF)
Is it safe to go out of this unit and into another powered speaker, if so, which connector do I use. Thanks
Rick on Oct 22, 2012
BEST ANSWER: You have the capability of connecting one of these to an additional powered speaker via the through XLR port. This will send the same audio signal the speaker received from the original source to the next speaker.
For plugging in a laptop or iPhone, you would use a RCA to mini plug adapter is that right?

Can you plug a mic (xlr) and laptop/iPhone in to the K12 at the same time?
null on Aug 31, 2011
BEST ANSWER: That is correct, buit-in mixer with up to three audio sources can be mixed.
I have 2 QSC12 powerd speakers plus 1 K SUB we are using in a full size gym setting where is the best spot to place the sub to get the
best clarity for a church setting and what is the best way connect
the speakers ```
Travis on May 1, 2011
BEST ANSWER: If it's a church setting, the best place to put it is right in front. The way you can hook it up is interlink them because there powered speakers.
Is it normal for the speaker, once it is on a speaker stand to "wobble" a little bit. I even turned the so called dial, which didn't do much, and it still seems prone to wobbling especially when you have people jumping up and down on a dance floor.
DJ Rick on Mar 10, 2011
BEST ANSWER: It will have some natural give and take on the speaker stand - make sure you are using the 1" 3/8 end of your speaker stand pole.
If I use 2 QSC K12's - being that they are active speakers, and then use 2 subwoofers that are passive but use my amps for them, will that work or will they be out of phase with each other?
Lynn on Mar 5, 2011
BEST ANSWER: It will work fine when you plug the two passive subs into the amplified speakers.
What are the product warranty options on these speakers?
Becca the bar owner on Sep 23, 2010
BEST ANSWER: these speakers come with a limited one year warranty. however, if you register your speakers on QSC's website, you can extend the warranty to six years for free! This extended warranty is normally $99. See their website for more details:

DJ JIMMYP on Jun 22, 2010
BEST ANSWER: This speaker weighs in at 41 lbs.
I have read reviews saying that the K12 is not 1000watts like QSC says they are.Will you be able to tell me the actual power of this speaker?
D.J. STEVE on Mar 20, 2010
BEST ANSWER: QSC K12 2 Way 12" Powered Loud Speaker will actually top out at around 1000 watts.
QSC K12 Reviews
4.8 / 5.0
32 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Nice Speakers for the SIZE...
Pros: Easy To Set Up,Great Sound Quality,Easy to Mount,Good Power Output,Attractive Design

I have got to say, these are great speakers for the size. I have gotten a lot of compliments for the size and sound. I have 2 k12's with 2 kw181's. I have done a crowd of 250 easy with the gains at 12. I've also done gigs with these alone, and they did very well. The DEEP bass is great. I didn't believe at first until I've used it..it comes in handy when I don't need the subs. But, get the covers...you'll be grateful. I'm glad I puchased these. With the casters, I put both 12's on with my mixing console and just wheel it in to gigs. I don't need my handtruck anymore..unless there's stairs..lol. I've always used 2 peavey sp4's with a SP218 and 2 crown 4000 to push them, now I have less setup time and less weight on my back and less storage. 22 yrs of DJing has gotten much better..Thanks to QSC K & KW series. I prob will get the KW152's for bigger events 300+. One last thing, I did push these to go red (clip) for a good couple minutes..and it DID NOT stutter or shut off..that's my take after owning them for the past 6 mos. Hope this helps, I depended on reviews before purchasing myself.
January 19, 2012
The New Standard For Powered Speakers!
Pros: Good Power Output,Easy to Mount,Great Sound Quality,Attractive Design,Easy To Set Up

When you're for hire and DJ for a living, you quickly learn, you buy & use the best and most reliable gear you can afford. Your reputation, your business, rides on every gig.

I heard a pair of K8's at a local event. I couldn't believe my ears. Wow, just wow! The next day, I was at my distributor who demo a pair of K12 on top of a pair of K-Subs. The clear mids & "punch you in the chest" lows were without peer. Nothing even comes close.

Within a week, I sold my JBL SRX 715's and 718S along with three QSC PLX2 3602's and purchased the K12's, K Subs and factory covers for all. I've done about 25 gigs so far, half of which I only used the K12's by themselves. Largest gig indoor was for 550 (wedding reception) and outdoor gig for 1,400. Worth every hard earn penny I spent for them. I've never pushed them past 50% power, never had to.

Don't listen to me, listen to these speakers. But keep your eyes open, cause you won't believe you ears!
January 18, 2011
Pros: Easy to Mount,Easy Setup,Great Sound Quality,Good Power Output

Absolutely brilliant. I've been a DJ for around 12 years now and this is the total package. After selling off all my gear a few years ago. I've decided to go back to my DJing habit. I worked in a sound shop for quite a few years and I know my gear. I've heard them all from no-name cardboard cabinets to Mach line arrays. THESE SPEAKERS ARE INCREDIBLE. Great design. Huge output without hogging power, Beautiful, accurate sound without weighing as much as a baby elephant. Lots of DJ friendly extras like a tilting stand mount and a locking power cable. Can't come up with a downside. These speakers rock, but, you probably don't want to "test" them at home, in the living room, at 10 pm...woke the neighbors, waaay more headroom then I expected. QSC, I love you.
June 18, 2010
The Best Powered Speaker EVER!!!
Pros: Easy Setup,Easy to Mount,Great Sound Quality,Good Power Output,Attractive Design

OMG... QSC did it again. These are by far the best speaker I have ever heard. I was searching for a replacement for my mackies SRM 450. I bought the SRM 450V2 and those speakers sound like garbage. Took them back and got the JBL 515 EON. Those were ok, but I was still missing that serious punch and power. Enter the QSC K12 Series. This speakers deliver on every sense of the word powered speakers. I should have purchase this speakers from the beginning. After all I owe the HPR 152 and the HPR 15 Sub woofers. Move over Mackie...K series is the new standard on powered speakers.
February 6, 2010
Easily the new Standard in Mobile DJing
Pros: Great Sound Quality,Easy to Mount,Easy To Set Up,Attractive Design,Good Power Output
Cons: NONE

First, QSC has come a long way in the Audio industry, always being high quality. Starting with the amps in the Cabs, they are super reliable, and run very cool. The cabs have a Celestion Mid/Bass drivers in them, and produce a super clear, crisp sound. The HF Driver is so accurately tuned, any where you are listening to the speaker(s) it sounds so nice. With these cabs, you do not need to put a ton of power through them to get a nice sound. The inputs are a huge plus, you can run 3 different wires from all different sources through 1 speaker. The effects are very nice too. DEEP adds a lot more bass and lower frequency to the speaker, when switching the vocal boost adds a lot more HF to the compression driver, for the extra clarity. The ABS sounds full and warm, but is a scratch magnet, so GET CASES, to protect your major investment. Add a powered sub for the gigs that require more bass response, and songs that have a low frequncy root. The Ksub is good, but the KW 118 sub is really the way to go. The bass coming out of the K12 is good, but not sub bass, and you will hear that when you listen to them. Over-all, this is by far the best speaker I have heard, compared to the JBL PRX 600's, RCF's, Mackies, and Bose. It is easy to move around, and just the most practical for really any application.
February 11, 2011
Outstanding performance!
Pros: Great Sound Quality,Easy to Mount,Attractive Design,Easy To Set Up,Good Power Output

I put this product to use at a military ball inside one of the Hyatt Regency's Ballrooms this past weekend and I was very impressed with its performance! The room had about 180-200 people in it but could have easily fit 250. I used 2 K12's with 2 Ksubs for this event but really didn't need both subs. I also was able to fit all my equipment in my 2 door Infiniti G37!! I didn't need any help as everything was light enough for me to carry. Upload took about 15 min and setup took about 15-20 min. Im so happy with this purchase and would recommend this to anyone!
November 19, 2012
over 5 years ago
Great Speaker
Pros: Attractive Design,Powerful,Easy To Connect,Great Sound Quality,Crisp Sound

I have been a dj for 15 years. I have been a huge fan of EAW speakers and have always used them so I know quality. Powerd speakers are great but usually lack quality or are too heavy. QSC nailed it with these speakers. They out perform the Mackie SRM 450's. The sound quality is amazing. It has a lot to do with the choice of tweeter (1 3/4 inch) and high quality woofer. Having a large amount power helps too. I have also bought the K-subs and they are just as amazing as the tops. The K-12's sound great in a good sized room with out subs.
July 16, 2009
Game Changers
Pros: Great Sound Quality,Good Power Output,Easy Setup,Easy to Mount,Attractive Design

I have been in the DJ business for about 20+ years and I have used a variety of Speakers: EV, JBL, Peavey, Crate, Mackie just to name a few. However, I just brought the K12 by QSC.....and it is like OMG. Trust...these are well worth the investment. Before I brought them...I heard them side by side all of there potential competition for that category and they blew them away (JBL, Yamaha, Cerwin Vega, Mackie & Berhinger)....however, on a side note...those new powered 15" Berhinger's where giving JBL a run for the money to be 2nd on my list. But if you have the money...go with the QSC. You will be glad you did.
April 18, 2010
Nice Quality and rich sound.
Pros: Crisp Sound,Great Sound Quality

I wanted to upgrade my existing DJ sound and went with the QSC K12. The sound is clear, rich, and full, even without the sub, the low end is reachable. The QSC 12's were like taking my existing sound system and multiplying it by 4. Looking forward to adding the sub and possibly the K8's to really fill out the sound quality. Highly recommend.
September 22, 2009
over 8 years ago
Great Outdoors Too!
Pros: Good Power Output,Attractive Design,Great Sound Quality,Easy to Mount,Easy Setup

I wrote a good review earlier about these speakers....but I have to add that I was a little skeptical about taking them outside with out subs.....Boy was I wrong. They held there own at a block party and was even heard three blocks away. Great sound quality and good thump with out a sub..even outdoors. Excellent Speaker....Worth every penny. The new standard.
October 4, 2010
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