Homemade sound panels

My panels frames are 5" thick wood frames with a pegboard divider recesed 2" into the frame.The front part has a 2x4 Metro diffuser(foam)inserted in it.Then the back is a piece 2x4'-2" thick OC705 inserted,& covered with a breathable casing to keep the fibers in..They will be mounted about 4" of the wall to maximize sound waves..What do you think??

I read somewhere that using pegboard acts like a resonator .With the hole's like bottle openings..The reason im using it is to keep the aurelex and the OC 705 seperate.The frames will be mounted about 3 inches of the back of the wall to let sound in from the back also..

Other then using burlap what other kind of material will let sound through.

What if I open up the holes wider..maybe to a inch or two..I need something to keep the aurelex in place,that's why I'm using the pegboard.I thought it would look alot nicer with the aurelex on top then some ugly burlap on top.Plus the aurelex has some acoustic properties..