Quote:
Originally Posted by Chris Kress  Consider adding a polyurethane finished birch 1/4" plywood to return the high frequency to the room. |
Plywood in front of a bass trap will reduce the trap's effectiveness, and plywood in front of a sheet rock wall won't do much. I prefer using cardboard in front of fiberglass bass traps because cardboard reflects mids and highs but lets bass pass into the trap.
--Ethan