/diy/ - Do It Yourself

I have two large floor speakers somewhat like pic related. The cone/diaphragm has been eaten away by age and they've long since been blown out by abusing max volume by whoever owned them before. Still, the wood is nice and I'd like to repair them if I could. Has anyone done this before? I'm going to try ordering a new speaker assembly and wiring it in myself, but I'll have to seal it properly somehow since the model doesn't have replacement parts anymore.