I'm trying to gather enough information on the Proac 2.5 clone to begin building the speaker. I have visited the website. Does anybody here have any advice concerning this project? Specifically, what did you line the inside walls with and did you include any kind of stuffing. What about bracing. From what I've learned, there is no internal bracing. I guess the material used to line the inside walls dampens enough to cancel any external vibrations. This is why I'm interested in the wall material. Thanks for any help.