I plugged the RCA cable directly into the DD-1 from my CDA-9886 from both the front output and the sub output. I was unable to get the distortion detection light to come on even at full volume, which is 35 on this head unit. Is this normal? If so then where shold I set the volume level in order to set the gain level on the amp from the speaker level output?
Also I noticed that when I am testing the mid and high amp for distortion it will change depending on where the crossover is set on the amp. So I turn the gain all the way down, the crossover all the way up, set the gain with the DD-1. I left the DD-1 hooked up and turned the crossover down and the distortion light came on. So I'm confused as to what I am doing wrong.