Help with acoustic treatment please

[BlendedFusion]

Hey guys whats going on. I was just curious if anyone had any advice on treating my new room.

I was planning on building a bunch of broadband absorbers to go along the wall behind me, as well as some superchunks for the corners on the room.

I am not quite sure how to treat the front wall, if at all, as the shape of the room is really weird.

Also I can't figure out where the reflection points would be, because it seems like it would be off of the bigger speakers but I'm not quite sure.



Also I am assuming the best course of action for the isolation booth is deadening it as much as possible because of the small size, but not sure what is the best way to do that.

Should I be covering most of the surfaces with broadband absorbers, and trapping all the corners. I know foam is not that good, so is the left over foam from my old booth pretty useless; or can I utilize it in some way?

Any help would be greatly appreciated. Thx.

[BlendedFusion]

more pics...

[jhbrandt]

Originally Posted by BlendedFusion

Should I be covering most of the surfaces with broadband absorbers, and trapping all the corners. I know foam is not that good, so is the left over foam from my old booth pretty useless; or can I utilize it in some way?

In a situation like this, yes, cover with broadband absorption. Do that & then test. Mid and high frequency accuracy/balance without comb filtering is not too hard to get, but LF balance will be the challenge. You can't have too much trapping. - of course, you will need to organize some reflective areas with diffusion, if possible, to keep some 'life' in there - but keep these well away from the operator, possibly behind the speakers... treat & test, then treat and test.

You can attach the foam to the front of the broadband absorption panels to 'dress' them - and also improve absorption.

Cheers,
John

[Jens Eklund]

One way of using diffusers in a small room:

http://www.gearslutz.com/board/5773541-post9.html

[jhbrandt]

Excellent, Jens. - except that HIS room is far from rectangular.

- John

[Jens Eklund]

Originally Posted by jhbrandt

Excellent, Jens. - except that HIS room is far from rectangular.

- John

I think once one understand the principle, one will have no trouble applying it to other shapes.

[BlendedFusion]

Hey guys thanks for the replies, much appreciated.
So diffusion in back of speakers as in the front wall or the back wall?
I'm still not sure where to place absorption to eliminate early reflections because of the shape of the room and placement of the big speakers.
Also with the booth obviously covering most of it in absorbtion and traps is gonna kill any life in there; is that the way to go since any natural ambience will probably sound pretty bad anyways? How do I find that balance, is it just trial and error, or is there some kind of formula?

Thanks again.

[BlendedFusion]

Anybody else have any ideas? Thx.

[Jens Eklund]

Originally Posted by BlendedFusion

Hey guys thanks for the replies, much appreciated.
So diffusion in back of speakers as in the front wall or the back wall?

Does my room need diffuser?

Originally Posted by BlendedFusion

I'm still not sure where to place absorption to eliminate early reflections because of the shape of the room and placement of the big speakers.

You take measurements and use the ETC to detect early reflections.

[Glenn Kuras]

Originally Posted by BlendedFusion

Anybody else have any ideas? Thx.

John pretty much gave all the info you are going to need.

[BlendedFusion]

Ya definitely, I just wasn't sure if I did the exact same thing inside of the booth or not. I suppose I need to drag a speaker inside the booth to test. Thanks again guys.

[jhbrandt]

For the booth, I would highly recommend trapping to the point of very dead... You have an advantage with the booth having angled walls, but still you must combat the 'boxy' sound - and this is done with substantial trapping.

Cheers,
John

[BlendedFusion]

Haha, John to the rescue again. Thanks alot man, you have definitely helped me out tons.
It does seems like all of the calculators for reflections and other things are all based on having a rectangular room, I think thats why I am having trouble with figuring it out.

[jhbrandt]

Yes, due to the increased complexity, calculations become more difficult than actual testing... and actual testing is 'actually' what is needed.
Test and treat --- & treat and test.
For tracking rooms and booths, it's a little different. Do the treatment according to function.

Cheers,
John

[BlendedFusion]

Ok thanks a lot John, that definitely clears up a lot. I was spending so much time trying to figure out the calculations when in fact it makes so much more sense to spend that time treating and testing, duh, lol. It's very easy to over think this stuff sometimes.