Hey, I just bought two alpine door speakers for my 2000 Mustang. I have two subs and a 600W 4 channel amp. I have two sets of RCA cables running from the amp to the deck, one for the subs and the other for the speakers. Whenever I turn on my car the speakers give off a squealing noise and it gets louder as I accelerate. I tried to keep my RCA cables as far away from the power cord but that never helped. Could someone tell me what is wrong?

Thanks

 

Go over all your grounds and clean them. Including engine & battery grounds. If that doesn't help, try plugging an Ipod or something into your amp directly. If problem goes away, its behind the amp. Then, hook the Ipod to your RCA's where your deck would connect to them, if the noise starts its the RCA's, if not the noise could be entering from your decks ground.

You can always ground one of the RCA ground shields to the chassis of the tuner. That will usually stop the noise as a last resort. It's always better to try & find where the noise is coming from first.

HTH

 

Is this a Pioneer deck by any chance?

 

Survey says....

 

It's an Alpine Deck, and I still haven't quite gotten rid of the squealing

 

The ground checking seems like a "restart" among tech support for computers... IMPO is a ground loop- if you can get a small modem transformer and place it in between the RCASs to the amp (will get rid of any dc noise- which in this case is probably due to an alternator- higher rpm more noise...).. good ones can be found on the old 56k modems... if not just get a ground loop insulator they got for 15-20 shipped on evil eBay....

details here:

http://www.bcae1.com/glisoltr.htm

PS- I recommend this site for EVERY single article- great source of info!

 

all right thanks, got it working good.