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Author Topic: Proper splay on QSC K12.2?  (Read 1138 times)

Scott Holtzman

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Re: Proper splay on QSC K12.2?
« Reply #10 on: June 25, 2019, 01:36:52 am »

With 3 per side you can do a dash-array with some custom hardware.
https://www.ebay.com/itm/QSC-K12-2-CUSTOMIZED-AS-LINE-ARRAY-12-000-W-SYSTEM/173909101772?hash=item287dca4ccc:g:EAEAAOSwX3ZcVo4M

Whatever you end up doing, you should get the mains up higher in the air. They look a bit low even when stacked on the subs.
It looks like you have a matched pair of subs on one side and a mixed pair on the other side.

Wow this is complete mess.  The speakers are not designed to array,  you are putting the wide side of the horn the wrong way and custom hardware??????

This can't possibly work.

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Chris Grimshaw

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Re: Proper splay on QSC K12.2?
« Reply #11 on: June 25, 2019, 03:23:26 am »

Wow this is complete mess.  The speakers are not designed to array,  you are putting the wide side of the horn the wrong way and custom hardware??????

This can't possibly work.

It'll "work" in the sense that you have 3x boxes and they're all making noise.


I stand by my suggestion of a 2x15"+2". Bonus if you can find something with a 90x60 HF horn that can be rotated, because then you could use 2x/side and have 120-degree coverage.

It doesn't matter how many knives you bring to a gunfight.

Chris
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Peter Kowalczyk

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Re: Proper splay on QSC K12.2?
« Reply #12 on: June 25, 2019, 12:19:44 pm »


It doesn't matter how many knives you bring to a gunfight.


LOL!   ;D ;D ;D
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Scott Holtzman

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Re: Proper splay on QSC K12.2?
« Reply #13 on: June 25, 2019, 01:52:26 pm »

It'll "work" in the sense that you have 3x boxes and they're all making noise.


I stand by my suggestion of a 2x15"+2". Bonus if you can find something with a 90x60 HF horn that can be rotated, because then you could use 2x/side and have 120-degree coverage.

It doesn't matter how many knives you bring to a gunfight.

Chris

I agree completely, I was commenting on the person that made a line array out of KW boxes.

There are so many good speakers that meet the requirement of a larger horn exit, lower crossover and narrower pattern.  Those would splay decently and he would have a fighting change.



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Sam Costa

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Re: Proper splay on QSC K12.2?
« Reply #14 on: June 25, 2019, 01:55:53 pm »

I agree completely, I was commenting on the person that made a line array out of KW boxes.

There are so many good speakers that meet the requirement of a larger horn exit, lower crossover and narrower pattern.  Those would splay decently and he would have a fighting change.

As mentioned, I typically use my KF300 boxes for this event (and similar outdoor events where I don't need the KF650's) but I sure did like the portability and weight factor of these QSC k12.2's though.. They certainly provided a pretty good punch for the event.


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Tim McCulloch

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Re: Proper splay on QSC K12.2?
« Reply #15 on: June 25, 2019, 02:43:00 pm »

Sam, set up a pair of K12 outside, you don't need subs.  Set them side by side, touch at the back.  Play some pink noise and start spreading the fronts of the speakers and listen to the change.  Walk the width of the coverage, too, with each change in splay.

The best you can do it try to find a splay that minimizes the damage in whatever part of the spectrum is most important to your program material.  Rob Spence has a decade-old post about doing this exercise...
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Chrysander 'C.R.' Young

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Re: Proper splay on QSC K12.2?
« Reply #16 on: June 25, 2019, 02:52:59 pm »

With 3 per side you can do a dash-array with some custom hardware.
https://www.ebay.com/itm/QSC-K12-2-CUSTOMIZED-AS-LINE-ARRAY-12-000-W-SYSTEM/173909101772?hash=item287dca4ccc:g:EAEAAOSwX3ZcVo4M

Whatever you end up doing, you should get the mains up higher in the air. They look a bit low even when stacked on the subs.
It looks like you have a matched pair of subs on one side and a mixed pair on the other side.

This "system" has been making the rounds in the FB Pro Sound Disasters group for some time now.  I cannot imagine how terrible that would sound, especially with 3 x 75 degree conical HF horns all interacting poorly.  Please tell me you were making a funny and we all missed it.
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Don T. Williams

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Re: Proper splay on QSC K12.2?
« Reply #17 on: June 25, 2019, 04:44:42 pm »

I really like K12' because they hold up in my rental business.  Easy for customers to use, and hard to abuse.  I'm in full agreement that K12's don't splay well and don't make a dash array.  They probably work better than the five per side SA floor monitors flown as a dash array at a venue in my area.  I'll send pictures when I can.
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Sam Costa

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Re: Proper splay on QSC K12.2?
« Reply #18 on: June 25, 2019, 05:38:23 pm »

Sam, set up a pair of K12 outside, you don't need subs.  Set them side by side, touch at the back.  Play some pink noise and start spreading the fronts of the speakers and listen to the change.  Walk the width of the coverage, too, with each change in splay.

The best you can do it try to find a splay that minimizes the damage in whatever part of the spectrum is most important to your program material.  Rob Spence has a decade-old post about doing this exercise...

Thanks Tim, I appreciate the input. I'll try that. :)
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Scott Holtzman

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Re: Proper splay on QSC K12.2?
« Reply #19 on: June 26, 2019, 01:49:21 am »

I really like K12' because they hold up in my rental business.  Easy for customers to use, and hard to abuse.  I'm in full agreement that K12's don't splay well and don't make a dash array.  They probably work better than the five per side SA floor monitors flown as a dash array at a venue in my area.  I'll send pictures when I can.

Same deal with us, we have KW's and they sound better than the K's in my opinion.  I don't think the .2 are much of an upgrade, way too busy on the back panel.

However as they age I am running them more for monitor duty, corporate etc.  The Yamaha DSR's and DZR's are so vastly superior and easier to mix on the KW112 rarely go out as mains anymore.  The KW153's still get a lot of use and are a solid three way box however the JBL SRX735's with the larger HF driver are again so vastly superior they show the age of the QSC design (we don't own any of JBL's). 

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Scott AKA "Skyking" Holtzman
River Delta Audio is now:

Ghost Audio Visual Solutions, LLC
Cleveland OH
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