ATTN: Those with new headunits in mach 460

[cgrant]

For those of you that replaced the head unit in your mach 460 to an aftermarket deck. Do you get this high-pitched frequency noise coming out of your speakers everytime you turn the car on and the deck turns on? I got a wire harness from site on sound, they special ordered it, said its special for the mach 460 and I get this high pitched squeal everytime. This other guy I know has the same problem.

Is this fixable? Do you guys have this too? If not, which harness WON'T do this?

Thanks !

 

[krly79]

is it like a whine? If so then it sounds like the audio lines are run with a power, which will cause a whine through your speakers. just an idea

 

[cgrant]

is it like a whine? If so then it sounds like the audio lines are run with a power, which will cause a whine through your speakers. just an idea

It's not the same noise everytime. Its a loud, high pitched squeaky noise accompanied with a "blip" sometimes. It is really strange.

 

[Blev]

For those of you that replaced the head unit in your mach 460 to an aftermarket deck. Do you get this high-pitched frequency noise coming out of your speakers everytime you turn the car on and the deck turns on? I got a wire harness from site on sound, they special ordered it, said its special for the mach 460 and I get this high pitched squeal everytime. This other guy I know has the same problem.

Is this fixable? Do you guys have this too? If not, which harness WON'T do this?

Thanks !

I just did a thread about the Mach 460 head unit. The harness I used was 20 bucks and I don't have ANY distortion/noise/backfeed. It's by Metra part # 70-5511. I picked it up at Best Buy for about 20 bucks.

 

[hognutz]

I would bet it has to do with the fact you there are factory amps in the system. if you wire a powered output to an amplifier input you can have some issues. you can overdrive the input so to speak. the harness you bought may be a pos. you could proably figure something out yourself. if you took the rca ouput from you deck and wired it to the factory amps it may work better.

 

[2kyellowgt]

I have the same problem with the whine noise. I was told that is a bad ground from the wiring harness. what I was told to do was hook up a direct chasis ground to the back of the radio and it should solve the problem, I just havent done it yet.

If you do it let me know if it works.

 

[mhissticobra]

Road noise

 

[COramprat]

Never had that with mine...I have the interface adapter from Scosche to the harness and then to the stock plug.

http://www.sounddomain.com/sku/SCOFAI3

 

[xomp]

if you use the harness, which puts powered output into the stock amp, it will create a lot of noise.
after i got an amp bypass for mine the noise was gone.
basically wut hognutz said.