Ground loop problem

[deeje]

Also could be the whole indash my friend was in town and he got a new indash and amp for all the speakers before he hooked the amp up everything sounded fine after the amp horrible turbo whine whenever he hit the gas you couldn't even hear the music so I spent 3 days changing and checking everything I could think of even re wiring all of the speakers finally said maybe you got a faulty in dash went to the store traded out put the new one in in the parking lot and ding ding ding nothing sounded great.

[skittlesRgood]

you can try to ground the rca cables to the HU chassis.

those grounds are horrible, you cant just pinch the wire in between 2 pieces of metal.

my guess is that it is your amp. some amps just make noise. turn the gain down and it may go away.

i have a ground loop isolator, didnt do anything bad to the SQ or volume.

Edited September 7, 2010 by skittlesRgood

[Kranny]

grounds are terrible and x2 what boon and skeetles said. but yes your grounds are absolutely terrible. put ring terminals on them, solder them or crimp and solder your choice, and BOLT IT DOWN (not screw) to your strut tower with the paint sanded off so its straight shiny metal.

[hatrix]

Like i said, i put ring terminals on all the grounds and bolted them down.

The gain on the hifonics is not very high at all. Obviously if i turn the gain down, you won't hear it because you won't hear anything at all. And like i said before, there was no buzzing until I added the hifonics amp.

Edited September 7, 2010 by hatrix

[Bocaj]

you can try to ground the rca cables to the HU chassis.

How exactly do you ground the RCA's to the HU chassis. I read somewhere that you wrap a wire around the outside of the RCA's and tap into the head unit ground but I am not sure if that means both RCA's or just one. Not trying to thread jack just having the same problem with alt whine since I put in my 4 channel amp.

[skittlesRgood]

How exactly do you ground the RCA's to the HU chassis. I read somewhere that you wrap a wire around the outside of the RCA's and tap into the head unit ground but I am not sure if that means both RCA's or just one. Not trying to thread jack just having the same problem with alt whine since I put in my 4 channel amp.

you wrap the wire around the outer connector on all the RCAs and connect the other end to a screw on the hu.

[hatrix]

you wrap the wire around the outer connector on all the RCAs and connect the other end to a screw on the hu.

Having already soldered the pico fuse, that can't be my problem. Grounding the RCAs would do nothing for me.

[skittlesRgood]

Having already soldered the pico fuse, that can't be my problem. Grounding the RCAs would do nothing for me.

well that was only one thing in my list. why dont you try the others instead of worrying about what wont work?

[hatrix]

well that was only one thing in my list. why dont you try the others instead of worrying about what wont work?

What else is there to try....?