So I just got a new amp yesterday from cl and had it demoed to me. It was doing just fine with him. The amp is a avionixx axt 800.2. I hooked it up late last night and played with it a lil bit. Right away I noticed there was loud thumps, like a heart beat. After messing with it, I figured out it really only happens when there is no signal to amp(no bass playing). But it doesnt ALWAYS happen, just frequently. I havent changed anything from my last set up to this one. Anyone ever have this happen? I'm confused as to where to even start. Tomorrow I am going to go over all my wiring. I don't think it is a ground issue as I am grounded straight to my battery(battery is in the back of the trunk). I drive a Saturn Ion2.
Thanks for any help.