best wood for speaker cabinets ? oak,cherry, balti

I too have been thinking of building a set of speakers, possibly Audio Note, in the future. The following link to a forum thread on Audiocircle references an interesting material to be incorporated in constrained layer speaker cabinet construction. This looks like an interesting and potentially rewarding tactic for someone seeking to build inert as possible cabinets. http://www.audiocircle.com/index.php?topic=92198.0

Manoterror, our studio constructed a number of sculptures from baltic birch plywood using a two-axis cnc machine to cut the basic shapes before lamination and finishing. It is very time consuming to work with this construction technique from a finishing standpoint if you are seeking a high end look like Penn and Magico. The best baltic birch we could source locally here in Tampa was riddled with small voids in the plies. Be prepared for a lot of filling (and color matching the filler) and sanding to get them ready for a finish. I also would think very carefully about how you'll be able create enough compression force to properly laminate the many, many layers of plywood you'll use. All of the plywood I've ever used is ever so slightly non-plane across any cross section of the size you'll use to make a speaker. We were only working in twelve inch deep sections with about sixteen layers and that was a challenge to glue up and get clamped before the glue started to set. I'd imagine Penn and Magico have multi person teams working the laminate glue ups that then go into a hydraulic clamping system.