http://www.johnlsayers.com/HR/index1.htm
I went shopping today for wood for my bass traps. While I was there, I bought some 1/2" rough cut cedar planks for another project. I love the look of them so much that I'm wanting to use them for the resonator slats. Would this be okay? I know this seems like a stupid question but I honestly don't know. My first inclination is that the slats in John's link are 1" thick for a reason. So...that got me thinking as well. What if I either doubled up on the cedar or used a 1/2" pine or whiteboard on the backside of the cedar to create a 1" thick slat? Something cheaper for the backing, that is. The cedar planks aren't cheap.
On another, and almost completely unrelated note...my wife suggested painting the frame of the resonators to match the trim in the room. Do you think, aesthetically speaking, that would look alright with the cedar or stained whiteboard?