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Squeeling tweeters and front speakers 

 

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 Post subject: Squeeling tweeters and front speakers
Posted: Fri Jan 13, 2006 11:13 am 
Parts Gopher
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Location: Melbourne
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Hi People

Seem to have a weird problem that I cant seem to get my head around.

I have a clarion head unit which i installed in the car about 8 months ago. The head unit runs the front and back speaker with the amp running the sub.

It happened all of a sudden, turned the head unit on and it seemed as though the front speakers ( 5X7 and tweeters Au fairmont stock front speakers) crackle, can hear it more through the tweeters. If i crank the volume up the tweeter give out a high pitch sqeel as though its reaching maximum handling power.

If i FAD out the back speakers and play only the front it plays fine. As soon as i start fad for the back speakers the crackling and squeeling of the tweeters comes on.

Had a mate look at it and he seems to think that its either a grounding loop problem or that ive blown the head units amp. Nothings been moved or touched and this is happening.

Any help would be appreciated

 

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Posted: Fri Jan 13, 2006 12:53 pm 
Stock as a Rock
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I saw this happen to a stereo i installed in my younger days.
What happened was that the left and right speaker -ve wires were joined together, called common wiring. It caused the headunit internal amp to stuff up, it was OK at really low volume but freaked out if turned up.

I rewired from headunit to speakers and all was ok.
So, possibly some speaker wiring behind the headunit in your car is shorting.

 

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Posted: Fri Jan 13, 2006 2:14 pm 
Parts Gopher
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Location: Melbourne
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Thanks maximus il give it a shot ova the weekend

 

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Posted: Sat Jan 14, 2006 9:13 am 
Getting Side Ways
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Make sure the wires for the rear speakers are insulatd and not shorting to anything.
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