Hmm. It got me thinking.....and then my wife told me to stop thinking. Thanks for the suggestion.
Taming a bulkhead
My listening room has an 8' drywall ceiling with a drywall bulkhead containing the ac duct running between the right and left walls right over my listening position. The bulkhead comes down 11" from the ceiling. Should I be treating the 11" edge (facing my speakers) with an absorbent acoustic panel? I have a 2'x4' acoustic panel that I can readily cut down to make a 11" x 4' panel and attach to the bulkhead, but hate to ruin a nice panel if this is the wrong approach. Any thoughts?