I just installed my amp with 2 6'9's sony xplods and I got it all hooked up correctly. When my car isnt running Just the key is turned slighty to give everything power the speakers sound fine just a minor hiss to them but when I start it there is a harsh buzz in my speakers that is loud and even when the volume is down it is still loud. My step dad said its because of my ground ? How do I get rid of the buzz in the line ?
can be from ground, can be bad rcas, try reground, then jump a new(good set) of rcas from radio to amp, if that does not work, try ground loop isolator.