A few questions come to mind immediately-
what type of traps are these? Are they absorber panels that you'll be placing at the corners?
or are they side wall/ceiling mounted panels?
How thick are the panels?
If these are DIY absorber panels (foam/fiberglass), I'd lean towards having them just be covered
with fabric on both sides, and space them 2-4 inches from the wall if space permits, for increased effectiveness.
Of course this answer may change if its a different type of panel being used.