Ok so from what I have been told the Audio Control LC6i should let me use my 4ch and mono amp with the stock head unit. I am getting some clean sound out of the 4ch but the subs are not playing at all.
What is supposed to go into that 3rd input. From what I read the 2nd input will feed the 3rd if there is nothing wired into it.
Any suggestions on where I might have gone wrong