Tom - you can get an in line fan booster at home depot that will increase the cfm's from your duct ( runs all the time). also try to resrict some of the other ducts in other rooms via the vent cover plate louvers while opening the HT rooms wide open , this will also help .
i am building my theater room NOW , have pics would like to show , im a decent builder, not at putting pics on a webpage, could someone tell me the easiest way to get some pics on the site here? thanks.
im glad to hear everyone would rather have a wood floor than slab, helps me decide on what to do now that im getting ready to change my garage over to HT .