Hi!

I Am now thinking of building a subwoofer fpr my car. I am thinking of building a 2 chamber box (ported) with 2*10" speakers. The thing is that I am thinking of using plexiglas on the top of the box. So that I will be able to see the beauties inside. Maybe using plexiglass for the angled side to.

My question is, is there a problem with using plexiglas in the box or should I consider the box as it is, unregarding of material? And should I think of putting in foam into the bottom chamber (where the port is), and if so how much foam should I put in there?