Well I went to re-wire my RCA stuff, made my own stuff, well I go to re-hook up the amp and the REAR channel has a wicked whine, I would guess that it might have alternator sound to, but the Front channel is just fine. So For now I pluged the rear speakers into the front speakers, Sounds great. But I am only running my 4-channel system on two channels, (No Good). How could this be possible if the RCA's run the exact same route (back to the EQ and then under the passenger seat to my amp)?

 

make sure your have a good ground, and is the rca next to power cable?

 

Isolate the problem!

If you have a four channel amp, and you have 4 RCA wires going back there, and you are only having a problem with the rears, swap the RCA's at the amplifier.

If the noise moves to the front speakers, you know that something upstream of the amplifier is the culprit....probably the new RCA's. If the noise stays in the rear speakers, it's either the amplifier, or something along the way from there...

I'd take a second look at the construction of the RCA's to make sure you have them connected well, and tha tyou don't have any stray strands making contact anywhere and that the signal grounds are hooked up well.

 

Well, I don't think that the distance between the fronts and rears are any different from the power. I will check the RCA's, I think that If I swap them and the problem switches then I will have to look at the head unit connections. If not then I'll check the Amp out, maybe there is something up with the settings, thanks,

 

OKAY,

Here is a puzzler...

I switched the RCA's at the amp, the amp is not the problem. I switched the wires at the head unit, It's not the head unit. I ran a splice wire (super cheap RCA) from the head unit directly to the amp it had buzzing, in all the speakers front and back.

All the wires run side by side and are all the same length. Checked all the actual wire connectors and they are not the problem.

The amp is properly grounded, I'll have to double check the head unit but it has been functioning, could there be a difference in the grouding between the two that causes this buzzing?