Does anyone have info on using different size subs in your car audio setup? I'm currently running one 12" Kicker Comp (the yellow model, SVC 500 watts peak and one 10" same model same Svc different peak wattage. ) My neighbor said I couldn't do it. Well I did and it sounds awesome! Bass is deep and crisp and It is the clearest system I've ever ran. Was thinking about adding a 15" same brand and model. Any thoughts?