
KEW
Audioholic Overlord
Had me worried there for a minute. Plywoods are a lot cheaper than solid hardwood panels. How hard is that stuff to find in 5' x 5' sheets?
You'll have to find a source in your own area (it is reasonably common, ask at local cabinet shops), it is imported and 60"X60" is the default.
http://www.bristolvalley.com/catalog.asp?prodid=296590