Well i just installed my audio system.
-4 channel amp
(sub and speaks are amplified through my amplifier)
Now, my problem. I am getting a whistling noise through my speakers that fluctuates with the engine RPM. My friend said that my ground was not good, and this is cuasing the whistling. Is this true? Where should I ground my amp?
Also, is amplifing the stock speakers a good idea? They sound pretty nice, but I'm afraid of blowing them out.
Thanks for helping