Bill Epstein Messages: 1088 Registered: May 2009 Location: Smoky Mts. USA
Illuminati (2nd Degree)
If using MDF as described I'd apply veneer inside and out with contact adhesive which is one of the few water-proof glues.
OTOH, given a choice in Cambodia (!), I wouldn't touch MDF and go straight to Marine Plywood made with water-resistant adhesive.
Are we talking the Cambodia formerly ruled by Pol Pot and currently at war with Thailand? We Americans are really zenophobic and this one is having a hard time picturing a high-end sound system there.