I know this been asked a hundred times, but I have to ask it again for my specific set up. I have a factory radio that I unfortunately can not replace with an aftermarket. So I have a Wavtech Link 6 loc going to a 4ch amp and a mono sub amp. First question, when looking for my max undistorted vol from my headunit, do I connect my DD-1 plus to the high level or the low level inputs?
After finding my max vol, I know I move to the 4ch amp and then to the sub amp. next question is when setting my gains, should I be testing from the speakers inputs or the RCA'S.
Thank you for the help