Thanks, Prunedale. As a musician/soundguy I know a bit about acoustics but was just wondering about that ductboard stuff and if anyone had tried it. I don't know if 3/4" of insulation would do it. The foam in the studio works great but is so expensive it ridiculous. I think if I move my cloning cabinet to another wall it would help some. I was just thiking of killing two birds with one stone; mylar and insulation in one package. I'm just cheap and wanted to use somebody's experience rather that spend the cash myself (might as well be honest).