10-15-2011, 04:47 PM
A piece of styrofoam cut out and taped around the knobs will help keep the knob shafts from being jammed and damaged. Something taped over the speaker grille might be worthwhile too if thought out on where the stresses will be. Interior bracing limited only by your patience. Of course, usually I just say "Ah, too much work, I'll be careful." Which is USUALLY good enough. Your mileage may vary.
Phil aka Philbert Q. Desenex - Twin Cities, MN