2 18s 4th order help or oppinion

[GeekSquad 10+ year member]

Oh, and do NOT try to get good numbers out of multiple ports. If anything, try to go with one HUGE port (8.5cf x 18sq in/cube=153 square inches so, let's say 10in.x15.25in) would be much more efficient than multiple ports, I don't care what kind of flare you have on it.

 

[joshy629 10+ year member]

Thanks guys. I might try a slot port. But I've never built one. I assume theyy are pretty easy though correct?