You're missing the point. Keyword: Before. After port and sub displacement is probably 2 cubes. Which, Mikel, why don't you tell us what that is? The before number is useless to us. and what amp are you going with? lol yea i haven't set down and figured it out yet for the port and sub displacement , but i know i am going to get atleast 5-5.5 pending how much the port eat's up the enclosure measurements i have figured on is 34w 15h 28d total of 6.72852 cubes im shooting for 35hz as far as the port goes, what is the best way to go with this?as far as the port design,from the mesurments i have to work with? and for the amp it's a ..AQ2200d :bigclap: