For now I believe I will be using either the JL LOC 22 and grabbing the signal for the factory subs. Not what I like to do at all as that signal is processed and EQd already. Makes for less then ideal output it's been quite some time since I've gone this route. I've been looking at the Epicenter from Audio Control. Not sold as I understand at what is does and how. I really would prefer to grab and splice into the Coaxial signal and get a full bandwidth signal and use the JL VXi onboard processor