ok i ordered 2 15inch rockford punch hx2's. i plan on making a 6ft3 enclosure tuned at 30hz for my crx. and run 500wrms to each sub.
im going to use round ports, but does the placement of the port matter as long as its on the same plane as the subs (so tehres no cancellation) like if i put the subs on one end and the ports on the other end far away from the subs? or should i put them right at the subs.

 

It does not matter too much. Which ever is easier, or looks better to you. Keep the ports a few inches from the walls and you should be fine.

 

i was thinking of making the enclosure w/ 2 chambers. since im only going to have one of the subs for now i was thinking i would just do that and put it in one of them for now. would it be better if i had a single chamber or 1 for each sub. since im using round ports they shouldnt change should they?