It would be appreciate for your answers! (WORDING EDITED)
First off, I have JBL GTO628 2way, JBL GTO938 3-Way (rear), Alpine KTP-445U, and a pioneer DEH-X8600bh.
Now first off I obviously didn't think to far into this so sorry that I am an idiot.
1.) Also the speakers have a 0db and a -3db...