Noise grrrr, Sound system noise Options

[insec7]

Ok I got a weird problem that I cant crack. I hear this annoying noise out of my speakers wevery time the car is turned on, the pitch of the noise increases as I rev but it doesnt get louder.
Now I know improper ground causes this to happen, but I know I did ground my head unit properly so the other day I did a little test.


So I took out my head unit, and disconnected the ground from the chasis, but the head unit did not turn off, there was absolutely no change in sound/performance of it.
Then I started disconnecting other cables to figure out what grounding it. Finally when I unplugged the antenna cable, the headunit stopped working, this made me go WTF because it just doesnt make sense (to me anyway) So its obvious that the antenna is causing the noise because it serves as the ground.

Does anyone have any experience with this? Any tips/pointers would be greatly appreciated.

Thanks in advance.

[mgnt232]

Ok I got a weird problem that I cant crack. I hear this annoying noise out of my speakers wevery time the car is turned on, the pitch of the noise increases as I rev but it doesnt get louder.
Now I know improper ground causes this to happen, but I know I did ground my head unit properly so the other day I did a little test.


So I took out my head unit, and disconnected the ground from the chasis, but the head unit did not turn off, there was absolutely no change in sound/performance of it.
Then I started disconnecting other cables to figure out what grounding it. Finally when I unplugged the antenna cable, the headunit stopped working, this made me go WTF because it just doesnt make sense (to me anyway) So its obvious that the antenna is causing the noise because it serves as the ground.

Does anyone have any experience with this? Any tips/pointers would be greatly appreciated.

Thanks in advance.

With the noise getting higher as you rev, i would assume this is a condition called alternator Whine. I dont want to get too into details with it, but feel free to look it up.
Do you have a stock head unit? when you say antenna cable, do you mean the power antenna wire, or the actual larger antenna wire? It seems very odd that the antenna cable would serve as a ground (i know when i unhook my ground the stereo is down).

I don't know how much experience you have with audio systems, but i know the first time i did mine, i thought it was right, and i had messed up a few little things (wouldn't believe how little things can mess it up). Since then i have redone all the wires 20+ times, with new headunits, LEDS, underglows, switches, and have learned alot.

I would suggest just unhook your head unit completely, and take you time installing it again.

Also do you have an amp? and subs? everything the person before me explained is true (but im not sure if you even have a "system". When you run the power wires close to any signal wires (RCA) the power wires create a small electromagnetic field, that causes the "signal" to be distorted.
I hope some of that helps feel free to ask me any! questions, i have alot of knowledge about this.