So I'm wanting to make my own ported box, the trouble is i don't have the instruments or experience. Here's my collective take on how i can make something half way decent. If i know the bread and butter zone for a sub? Say its 2.25 - 2.75 cubes per sub. Can i make an enclosure that's, say 2.5 cubes and be okay? I mean, it's not going to be tuned to a specific freq, but it'll still be tuned to some freq that should work for that sub, right?