So the other day I noticed that the subwoofers were sounding ok at about 10% volume anything past that would cause them to fall out and make strange noises. Come to find out I had a very looks ground that was going to my secondary battery I figured I would just tighten it up and everything would be fine. After tightening up and turning on it didn't work. From there I removed headunit and tried switching the rcas to a different output. I then put them back and now I have no output at all even back on the subwoofer output. Heres my question with a loose ground would that cause my ground inside of the amplifier that goes to the rca outputs to malfunction?