Thanks for the wonderful input everyone...So it looks like I have several options here:

1. Go with an active digital XO
2. Try the XO designed by Vuki
3. Experiment with caps and such

Any concensus which way to go?

By the way, how much of a difference does the port configuration make when it comes to bass response? Is diameter more important, or is length the key? Could a 6" port be too small for this cabinet?

Thanks!