Good luck. You can try Cerwin Vega's website but you need the exact model number and hope they still have specs. If they don't have a recommended enclosure you could put the parameters into a box building program, but finding the thiele small parameters is going to be the tough part.
What not to do is just throw it into any ported box, vented boxes need to be very specific to the speaker or they will sound poor, could potential ruin the speaker, and will not put out more output.
My suggestion is stick with the sealed box.
