ice pac

Listening to my stereo while driving my vette today I noticed a high pitched buzzing in the dash speakers. It changed pitch with rpm changes, and was present with radio and CD. I remember reading somewhere it could be due to ignition shielding or something. I did a search but could come up with nothing. Any ideas on how to remedy this problem. (BTW, all the stereo components are new)

bigvette1

First, what have you done or changed that may have caused the problem?

ice pac

I installed an Alpine 9815, Infiniti 4x6's, and 6x9's, and a JL300x4 amp. This is the first time I drive my car and try out the stereo. When I bought it the stock radio did not work.

LAvetteman

You could try installing an ignition choke on the dash unit(deck) first. Then, if that doesn't work, put one on your amp.

This has been a problem in the automotive audio industry forever. You are getting electrical noise from the alternator or the ignition system, but it is fairly inexpensive and easy to fix.


[Modified by LAvetteman, 12:03 AM 7/5/2003]

gdh

As soon as I installed my MSD 6AL I ran into this problem, bought an MSD RFI capacitor and did away with that annoying sound.

bigvette1

First, make sure your grounds are good grounds on the head unit and the amp. Scape off all paint and use star washers into metal for grounds.

Second, use RFI filter on the alternator that you can get from Radio Shack. Easy to install and comes with directions.

If you used the RCA outs from the head unit to the amp make sure the cables are good preferrably the shielded ones.

Finally, if you still have noise you may have to use a voltage filter on both the head unit and the amp.

Good luck - these can be sometines tough to chase down.