I have a Poineer head unit DEH-P7300 which has many feature that i am not sure about but that main question i have is that the unit has a built in x-over but i also have passive x-over. Should i ditch the passive x-over and use the head unit or turn the one off in the head unit and use the passive one?//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif