plywood diffuser

[notbradsohner]

I am going to put a curved plywod diffuser behind my window. Is there some special way to go about bending it, and or, keepin it bent?

 

[Phyl]

You could kerf the backside of the wood repeatedly to make it easier to bend.

 

[c7sus]

Build a couple rails that will mount solidly to your wall, and run a dado down the rail to hold the edges of the diffusor piece. Then, as was said, kerf the backside.

I've also seen designs online using 3/16 or 1/4" Plexiglass with the dado'd rail setup. I imagine the plexi version works better on high freqs.