Hi Bill - any progress on your DIY acoustical treatments? I have built quite a few and could share my learnings if you were interested. (You can see some of them in my System page or read about them in my blog responses.)
As far as education on what thicknesses to build them and where best to place them, I like Dr Floyd Toole's book and would recommend you start there.
Cheers,
kevin
As far as education on what thicknesses to build them and where best to place them, I like Dr Floyd Toole's book and would recommend you start there.
Cheers,
kevin