Radio problem after install.

[de8212 10+ year member]

I had an amp and 6 speakers installed locally today. Before the install my AM radio was fine. Now there is a loud whine on AM radio. It doesn't do it when you rev the engine, it just does it constantly. Only real difference is now I have an amp, before I didn't.

I am taking it back down tomorrow but wanted to get some ideas of wht it might be.

Any one know?

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[de8212 10+ year member]

anybody?

 

[de8212 10+ year member]

????

 

[Redlineaudio 10+ year member]

It is very easy to get noise on AM.

Do you have an aftermarket Head or a stock one?

 

[de8212 10+ year member]

It is very easy to get noise on AM.
Do you have an aftermarket Head or a stock one?

Sorry, It's an alpine head unit. It was perfect before I took it in there. They installed an amp and speakers and now it sounds horrible. Took it by today and the installer had no idea. I didn't have time to leave it but he said to bring it back in the morning so he can troubleshoot.

I had to run some errands before I went there this morning. On the way to an appt. the AM was fine. On the way home it was bad. Then on the way to the stereo shop it was bad again.

Then I got there and he heard it. When the engine was off it was fine. Only an issue when the engine was on.

FM sounds fine.

 

[de8212 10+ year member]

Well, I took in in and they tried several things but nothing has fixed the problem.

I know they tried to re-ground the head unit as well as some different adapters (filters maybe) that plug in line with the antenna.

Installer said he would do some research and get back with me.

We noticed that the sound gets worse when the blower (for the vent) is on but the sound is not as bad when the blower is on higher settings?????

Anyone have any clues?