It works well, I forgot to mention to use damping material on the inside. I understand the basic idea is to use a stiffer material (wood or quality ply), which resonates less but at higher frequencies, and then damp the vibrations. I'm not a materials scientist or anything but I think this kinda makes sense....
I used cheap damping from Parts Express, the Black Hole was a bit much to swallow. I guess when it comes down to it I'm not in the camp that thinks that speakers have to be absolutely dead,
The caveats noted above concerning wood movement makes sense too. I read as much as I could find about this before building mine, worried and stressed over it, and then just did it. 18 months later they are fine
If you look online you can find listings of how much different types of wood change size and/or are prone to warping. My baffle is 7.5" wide, I personally would be wary of using solid wood for anything wider, although someone with more experience probably could.
