We are not talking about furniture or cheap MDF shelving you would pick up at Home Depot. There is a reason speaker manufacturers ALL AROUND the world in ALL climates have used MDF since the beginning of speaker manufacturing.

I would suggest you do a little research on the internet and get educated about speaker manufacturing and sound acoustic techniques if our educated responses are not what you want to hear.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85