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Request for assistance please room treatment

I do have it treated now, but I don't think it's correct. I need to treat it properly. I've tried a multitude of different positions, absorption, diffusion, trapping, etc. and my walls are starting to look like swiss cheese. I'm at the point now where I need to strip the room, putty, sand, and paint. But when I re-install the room treatments, they have to go in the correct position the first time. This is where your assistance comes in. I've tried many different web sites and so on, but it all seems best guess. I'm hoping to lean upon your "experience".
My room is 22'long, 11'wide, and 7'4" high, and is in a finished concrete basement. I look forward to reading your suggestions.
Thank You.
128x128shawnlh
newbee
4,768 posts
 
FWIW, while I too would like to hear what you think can be changed or improved by the use of room treatments, I think that the photos of your set up suggest (to me anyway) that one of your problems may be related to side wall reflections which might just be cured by toeing in your speakers until the axis of your speakers cross in front of the listeners chair.

I might also mentioned that the rooms dimensions could easily cause substantial nodes/nulls which could be avoided to some degree by careful speaker and listening position changes. You might consider getting a SPL meter and a frequency test disc which will help you identify the nulls and nodes which need to be addressed.
jl35
4,042 posts
 
It's very easy to overdo room treatment. My system greatly improved and got more alive when I removed most of it. A number of friends had the same experience.
brf
1,715 posts
 
Room acoustics is 90% science and 10% the "black arts". You need to measure your room to understand what is going on and what needs to be addressed. You must take a scientific and pratical approach to treating a room. It takes time with a lot measuring and remeasuring, listening and relistening, the proper treatments with an understanding what they do, trial and error, and a ton of patience.
lowrider57's avatar
lowrider57
5,417 posts
 
Shawnlh...
You haven't stated the problem area with the sonics in your room. Based on your photo, the room is very well damped (maybe over-damped).
BTW, I agree that toeing-in the speakers might make a change for the better.
pmotz
412 posts
 
The book Mechans refers to is "Get Better Sound" by Jim Smith, highly recommended. He has also done a video, though it's more of a video version of the book. He's currently working on a more in depth product, but progress has been slow. The ultimate solution to your problem is to have an acoustician come and evaluate your room, but that is a relatively expensive solution ($2000+ for the evaluation only).
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