this may sound weird but i am designing a box for a Sx and i was wondering, when they say that it takes a 3.5 cu ft box do they mean before or after? in other words should i make a 3.5 box or a 3.68 cu ft box?
sub displacement is minimal. I think depending on the size of the sub is something like .15 or .22cu ft. You can have the box account for it or not it won't make much of a difference.