I posted this in the general section of the 07 and newer Expedition section and found that Ford thought is would be a good idea to have the sub and bass linked together. I am hoping that one of you guys or gals out there can tell me of a way to split the subwoofer off so it is has it's own control while retaing the factory radio and sub. I have the six disc changer and the factory setup which is fine for my purposes other than this one idiotic mistep by Ford. I am guessing some sort of aftermarket crossover with separate volume control is in order here. Anyone been down this road before?