Whinning noise only out of rear speakers?

[Echo42987 10+ year member]

I'm just finishing up my install and I'm getting the famous whinning noise out of the rear speakers!?

1. I made a new ground for the HU

2. Amps are both grounded to the chassis

3. It's kind of hard to ground the RCA's on this model HU

4. Power cable is near RCA but it's the highest Shielded RCA cable Monster makes. (Get them cheap from my work)

5. Like stated above it's not the RCA because it's the highest RCA 4channel they make.

But what I find so weird is that it is only coming out of the rear speakers? Not the fronts at all? Only the rears!? Any help would be greatly appreciated!

-Nick-

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[Echo42987 10+ year member]

Come on guys....Someone has to know somethin'!

I've done a lot of installs and have fixed the ground noise before but I've never had it out of the rear speakers only!?

-Nick-

 

[Ptown_TSxxx 10+ year member]

I'm having the same problem myself with one of my right channel . I haven't tried to ground the rca's yet so I hope it's not my hu. Maybe that might be your problem, something faulty with you hu. If you have another hu probably try that out. Oh yeah I have a 960mp primier. I might just get a alpine 9835 in the future.