Have a couple of questions guys. When building an external slot port, how large should the exit be? Should it be the same as my port height 7.5''? The port dimensions are 20'' wide and 7.5'' tall.
My second question is when inverting subs do I wire them as I would normally and switch the pos and neg on the speaker terminals?
2 Zv.3 15's
2.87:1 4th Order @ 48hz