I have detailed plans for the latest baby-a Bob Brines TQWT tower design, using Fostex FE 177 drivers and plan at this time to use MDF inside and plywood outside. I have found this is easy to do and not too expensive.Is your option a more affordable one? I might be interested in knowing more? I havent used trnslam or stacked ply so far.The encl dimensions are about 42 in height and 10 1/2 square, with some braces inside.