Alright, so I hooked up a new speaker to my car and a new Skar LP80.4. When I turned it on, a bunch of stuff happened at once (later I found that the speaker was apparently a lot deeper than I anticipated) and it grounded out. Since that, every single RCA from both the amp and my sub amplifier makes a bad humming noise and the subwoofer makes a loud popping noise when turning off and just a bunch of idiosyncrasies. Does anyone have suggestions? I am trying a new set of RCAs tomorrow, but the only other thing I could think is grounds which I will have to redo them all another day.