I'm working on a box for an SSA f8l. Will be .55cuft net, tuned to 31Hz with ~750 watts pushing it. I've got limited space, but trying to decide on port design. I'm thinking of a 3" aeroport, but wondering if that will be enough area to sound good, or if I should go bigger, which would likely push me to a square port. Not sure how to decide how much area to go with, so any help is appreciated.