Speaker enclosures

[phebus]

If you want to build speaker pods for some 6X9 speakers, is there a formula for the size enclosure, and air space required in the box. I know it matters for subs, and the size enclosure is critical, but I've never seen anything in regards to 6X9's.
SWB, I know you just built a bunch for your boat, was enclosure size an isssue?

[rivercrazy]

.33 cubic feet is about right.

[ROZ]

Just don't build them too small...