Frequency Noises

MR206 · Post by **MR206** » Wed Jul 09, 2003 3:09 pm

when i start my car, i seem to have all these frequency (whistling) sounds coming from my speakers...which disapear when i turn the car off...anyone hav any idea how to stop this...or why it happens?

mvoong · Post by **mvoong** » Wed Jul 09, 2003 4:36 pm

This sounds like a ground loop to me. The whinning sound is the sound of the alternater going through your speakers. I assume you have an amp installed if so then your amp and you headunit needs to ground at the same point.

MattB · Post by **MattB** » Wed Jul 09, 2003 4:44 pm

Agreed, definitely an earthing problem. You can buy ground loop isloators from places such as Halfords fairly cheaply which often sort the problem out, but try & fid the proper cause first.

Cappy · Post by **Cappy** » Wed Jul 09, 2003 7:30 pm

I had the same problem with my Astra I had. When I had an amp it was wired up wrong and this caused the noise, as soon as it was wired up correct it was cured, did you do the innstall or a specialist?

MR206 · Post by **MR206** » Thu Jul 10, 2003 3:49 am

thanks for the replies...
i checked my grounding...all seems good...but the rcas were right next to the power cable...i moved them away...and all seems fine now...whistling sound is gone!

Cappy · Post by **Cappy** » Thu Jul 10, 2003 7:33 am

Supression noise

Erm · Post by **Erm** » Thu Jul 10, 2003 11:45 am

yep when your doing an install you should take the RCAS and powercables thru different sides of the cars to avoid that problem