I picked up some ct sounds strato 12's. They call for 1.5 cubic feet ported. I know in some cases the specs are on the small side. What is a good size box for 12's for sq. my 15's I ran in almost 5 cubic feet each and they sounded amazing, compared to a smaller box. Would like to build something with a size and tuning that will work well if I ever change subs as well.
