I originally took the pre amp signal for the 4 channels and sub and converted them to RCAs to hook into my amp. I got all kinds of noise and it was fading strangely where there was sound coming from the front speakers even if it was faded to the rear. I tested another amp with it and it was doing the same thing so it's probably not a bad amp. I thought it might have been a problem with the amp (Arc XXD5080) accepting the balanced signal so I reconnected the pre amp wires and took the post amp signal for the fronts into a LOC to connect to my amp. I left the rears disconnected since I don't really like using rear speakers. It sounds better and fades left/right properly but there is still noise from the Drivers side only. Also, the right side is noticeably louder.

I decided to reconnect into OEM amp to see if there is still noise and there was on the Drivers side. I checked all the connections and made sure to tape up any loose wires and tried to move the wires around to see if there were any changes but the noise was still there.

The strange thing is that with the car off there is no noise at all but you can still hear that the right side is louder.

Is it possible that the noise cancelling mics are affecting something since the rears and sub are disconnected?

Are the rears full signals like the front? I might just use those if there isn't any noise.

Thoughts?

Also, when I move the RCAs from left to right on the new amp the noise follows.

 

The noise changes to the other side when you swap the rca around ? Do you swap it on both ends ? It may be a bad RCA cable. I have a similar issue but noise out of both front speakers. It is soldered pre amp though. When i tried another cable i had the noise was gone.

 

It follows the RCA when it switch it but it was also there before the RCA was hooked up.

I guess that would eliminate it being from the LOC, RCAs, new amp or speakers. It could be from OEM amp or wires/connections going into or out of it.

 

I tried to take the signal from the left rear and it's the same noise. What are the chances that both the front and rear left are bad? What could cause this?

I'm coming close to just taking it to a shop and having them look at it.