I'm building a TL-606 cab to go with the one I have already. I am not very knowledgeable about different timbers so my questions are about this! Because I want them to stack nicely and I want to retain the correct internal volume of the cab I'll have to use 19mm (3/4") timber. (Please do correct me if I am wrong). When I removed the driver from my existing cab I could see it is made of MDF, so I was thinking of building my new cab of MDF too. I could also get Australian hoop pine ply (or radiata pine ply) in sheets of 2400 x 1200mm (94" x 47") Is MDF inferior or just heavier?