hello im wanting to build my 4th order blow thru enclosure ,i know mdf is the best but with a box this size the weight will be alot and birch is outrageously priced , is there any other woods out there that are not $50 (birch) a sheet ,and dont weigh 50lbs a sheet (mdf) any input would be helpful brian at starrmountain used something different other then mdf , birch any ideas of the wood he was using