Help Building an Audio Room


Hi All

I have been allotted a 15x15 x 10h room in the corner of my basement by the wife.
While I’m very happy to have a dedicated audio room, I have some questions and concerns. I’m hoping you all might be able to help. 

1) Three of the walls are poured concrete.  The space has crazy slap eco already and the 4th/back wall is not even closed in yet.

I am having the walls framed in, insulated, electrical, drywall etc. I am thinking of having them frame and build one wall an additional distance off the cement wall some amount so the room is not a square

Is that a good idea?  If so, how much out of square does it need to be to benefit from not being 15x15? Is 15x14 enough? Should I go for 15x13?  I can set up the speakers about any way I would like. 
 

2) Next question.  Should I have them install a certain type of insulation behind the drywall?  Money is an object, but now is my chance to build the room the best way I can within reason and to offset the square room I’m starting with. 
 

3) Anything else I should consider before/as they begin to frame, etc? 
 

Thanks very much!
 

jo1mtb

@jo1mtb 

I highly recommend you contact Jeff at hdacoustics. He specializes in smaller rooms and it would be well worth your time to get a design quote. His prices are very reasonable. My room is almost the same size as yours with a shorter ceiling height. He designed my room and I built it and it sounds amazing ! I have some construction pics on my page if you would like to take a look. Good luck !

 

Ron

@jo1mtb 

One other point. I think you can get great sound out of an almost square room. It all depends on how you build it. That’s where the expertise like Jeff has becomes invaluable. My room has no drywall on the inside of the room and I utilize a corner setup. I have no reverb to deal with as all absorption is built into the walls and ceiling. If you are in Colorado you are most welcome to come by and have a listen. 

First of all you can use portable panels to tailor the room regarding the size, the nice thing with portable panels is you can experiment with placement. The auralex panels have two different sides with absorption on one side and diffusion on the other. If you contact the vendors before you buy you can even send them dimensions, diagrams and pics of your room for recommendations :

https://auralex.com/shop/portable/

or

 

If you decide to go with on wall treatments this "recipe" worked very well for me. The placement guidelines start at about the :49 minute mark:

 

Thank you all so much! I really am overwhelmed by the community, ideas, and support on here. You all are awesome!

I’m going to go with 13x15x9 and mobile in-room sound treatment. It’s not a forever home. If it turns out to be a forever home, when the kids launch, I’ll have bigger rooms to chose from at that point. I hope :) ....WAF. 

Thank again so very much!. I got Harley’s book... thick!