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Install Garage & Help Desk You've got the radio, now which cable goes where? Got questions about factory installed radios in your car? Ask any installation or help questions here and someone will get to you soon.

 
 
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Old 01-04-2005, 07:27 AM   #1
mayash
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Default Engine whine

I have mine playing through the Aux input on my Blaukpunkt rec..It is getting power from the 12V outlet...BUt I hear an engine whine? Any sugestions? I did add another ground from the 12V outlet to the chasis but that didn't make a difference. Also if I unplug the Xact the whine stops?
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Old 01-04-2005, 08:50 AM   #2
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Are you running an amp? You are getting a ground loop. If you are running an amp, disconnect the ground on the radio harness. Use 4 gauge wire are short as you can from the amp. Use 10 gauge wire from your head unit chasi to the same point where you grounded your amp, do the same with your cigarette lighter. (Or you can hardwire it in the same fasion)

If you are not running an amp, do everything except the amp stuff.
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Old 01-04-2005, 09:49 AM   #3
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I use an amplifier and I have the engine whine issue too. Since I'm too lazy to do what rlith just detailed, I just use a ground loop isolator I picked up at Radio Shack.

http://www.radioshack.com/product.as...t%5Fid=270-054

Whine gone.
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Old 01-04-2005, 09:54 AM   #4
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Ground loop isolators are horrible..They degrade quality and they aren't a solution... I'm just a big believer of "If you do something, do it right"
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Old 01-04-2005, 10:33 AM   #5
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I can't really tell, but I only use it with Sirius and with the compression I'm not sure how well I could tell in those circumstances. I'll do an experiment later with my iPod and some headphones.

If I find the sound quality degradation to be appreciable, I guess I'll have to work on getting my grounding situation resolved. My other option would be to get a higher end GLI, like the one from Jensen that people seem to recommend. But at $170, I don't think so.
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Old 01-04-2005, 08:45 PM   #6
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Default Yes I do have an amp

The amp is mounted in the trunk and grounded to the frame..So you are saying run a ground from the radio chasis to the chasis on the car and cut the factory ground? I do think it is ag round issue, tonight I took my 12v air compressor out and plugged the XACT into it..It is chargable air compressor...Bottom line was the whining is gone..
I will try and ground the chasis tomorow and see if that helps.. I did ground the 12V outlet to the chasis bujt didn't cut the existing ground.

Thanks
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Old 01-04-2005, 09:46 PM   #7
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Default Re: Yes I do have an amp

Quote:
Originally Posted by mayash
The amp is mounted in the trunk and grounded to the frame..So you are saying run a ground from the radio chasis to the chasis on the car and cut the factory ground? I do think it is ag round issue, tonight I took my 12v air compressor out and plugged the XACT into it..It is chargable air compressor...Bottom line was the whining is gone..
I will try and ground the chasis tomorow and see if that helps.. I did ground the 12V outlet to the chasis bujt didn't cut the existing ground.

Thanks
You want to run all grounds to the same reference point. And try to match your ground gauging from all units to the same. Granted, that isn't always possible. What ground loops are, are basically seperate reference points that create a looped antenae (picture a UHF antennae) And this makes it optimal to pick up whine.
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Old 01-04-2005, 10:22 PM   #8
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Default Noise -

Nope thats not the best thing to do .
Ground everything to metal in your car .Shortest wire and thickest as possible.Each item should have its own ground
Reroute signal cables (use XLN monster cable RCAs) away from noise sources such as away from power wires.
Noise filters are like duct tape.
Dont run a wire directly from your battery ,unless nothing else works.
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