I'm trying to build a box for an 18" fi btl, and I seen a lot of post on here (right around 7.5 cubic feet) about it. So I was wondering what programs do you guys use to figure out all of the dimensions. I have used bassbox pro 6 and I can't figure it out (well atleast I can't find out) were the demision thing is in the database is. So i'm just wondering is there an easier program that works or what program do you guys use?
