I was wondering what the best weight / loft of the poly batting for the top half of the theatre wall sides should be. I can never seem to find anything very heavy on Joanne's fabrics. I did find the following batting though

http://www.batt-mart.com/site/490194/product/FPC-RS-2096-ROLL

Does this look like a good choice? 20oz/yrd and 1" loft...

Use highest ounce from Jo-Ann, then double it on the wall. That will get you approx 1in that's in line with the Linacoustic.

BTW, they always have those 40% off coupons!

This is what I find at Joanne's:

http://www.joann.com/joann/catalog.jsp?CATID=cat3604&PRODID=prd14621

Is this the item you are talking about?

I used the 1" loft on my upper wall and that worked well