Hey guys new here! I have a 2006 chevy cobalt 4 door. Im wanting to build a wall but cant decide if I want to run 2 DD 3512s or 1 DD 9515 both sealed from trunk. I have all my wiring done 0 gauge I have batteries and getting a HO alt soon too. Im wanting to hit some good numbers on the term lab. Any advice/opinions would be great!!