Need HELP with alt whine

[pityocamptes]

OK, maybe I spoke too soon It seems that the noise is mostly gone (appearently I had the gain all the way down when I was rewiring things which lead me to believe I solved the problem). I have done EVERYTHING imaginable. If the gain is kept down you can barely hear it. Which leads to my next question:

Where should the gain controls be on the subwoofer amp and the amp for the highs? My friend was saying that the subwoofer amps gain should be about half way, but if I do that and keep the gain low on the amp that controls the highs all I hear is bass.

I'm hopin the clarion eq might take some of the residual noise out, but if not what is the best way to set the gain controls. Also what are the gain controls for? I noticed that the EQ also has min and max controls on it. Thanks!!!


What is REALLY weird about the ignition noise is that I have two guages running off of the fuse boxes radio terminal (this terminal only powers my tach and air fuel gauge) - which is only on when the ignition is on. Well if I unplug the power terminal the noise in the system is VERY loud, if I plug the power back into the terminal the ignition noise pretty much dissapears, though you can still barely hear it. I cannot figure out how those independent wires (if unplugged from the power terminal) are inducing a noise into the radio. Perhaps someone can offer a solution. Perhaps their is noise in the system through the ignition wire (fuse block radio terminal) and the guages are filtering it out?

[Clipped]

have you tried running a primary and remote wire straight to the battery yet?

[Perry Babin]

Have you checked the RCA shield grounds on the head unit?

[pityocamptes]

Originally posted by Clipped
have you tried running a primary and remote wire straight to the battery yet?

Yes, and it made no difference.

[I Am An Idiot]

With your gains turned all the way down. Can you reach your desired listening level??????

[Clipped]

have you tried running a wire straight to the negative post of the battery?

[grjr]

Do you have speakers connected to the speaker outputs of your head unit? If so can you hear any of the noise coming from them?

[pityocamptes]

Originally posted by Clipped
have you tried running a wire straight to the negative post of the battery?

Yes, no difference.

[pityocamptes]

Originally posted by grjr
Do you have speakers connected to the speaker outputs of your head unit? If so can you hear any of the noise coming from them?

No, I just used the preamp outs from the HU.

[pityocamptes]

Originally posted by Perry Babin
Have you checked the RCA shield grounds on the head unit?

I checked this morning. I connected the ohm meter to the rca shield on the preamp out and the HU casing. The ohm meter did not show anything. I tried it at different levels (200, 2k, 20k, etc.) and it still would not register anything on the digital multimeter. Thoughts?