I visited the AudioControl website and noticed that the LC6 might be the one I need.
Items I would need to complete this set up are:
(1) 2-channel amp w/ built-in crossover to drive the 12" sub (set a low pass) [already own]
(1) Pair of new front and rear speakers
(1) 4-channel amp w/ built-in crossover to drive the front and rear speakers (set at high pass)
(1) LC6 to convert the output signals from the OEM headunit
Can someone please let me know if this setup is correct and would I get a decent sound from it?