I'm drawing up some plans for speaker boxes so I can have a cabinet-maker give me a price quote.

What is the easiest or best way to construct speaker grills?

1. Wooden frame covered in speaker cloth using a recessed baffel,
2. Wooden frame covered speaker cloth using a non-recessed baffel,
3. Recessed baffel and foam cut to spec?

If I decide to go foam, is there foam that is sold that is 1 inch thick or so; my boxes will be 18" x 24"?

Thanks...