Ground Loop Problem (1 Viewer)

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Neutron

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Nov 7, 2003
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Well, I finally isolated the high pitched squeal that happens when I listen to my Sirius Receiver.

I thought it was bad speaker wiring at first. I fixed that. Then I noticed that the hum does not happen on FM or CD, just on AUX mode with the Sirius receiver turned on. So then I mess with my aux input cable and lo and behold the humming only happens when the cable is plugged in.

Will installing a Ground Loop Isolator fix my problem for sure, or do I have a faulty aux input?
 
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avediswolf

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Apr 22, 2005
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Not exactly sure of your setup, but do you have something else, like an mp3 player or something to plug into the aux port, and see if it still happens?

That would let you know if it's actucally the port.

Best I can think of is trial and error...
 

bhelms

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Feb 26, 2006
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You might also want to try floating the ground pin in one of the power cables, assuming you have one in both. That worked for an old projection TV/stereo system I had with an annoying buzz in one channel. I wasn't too happy not having the power cord grounded to the TV, but in reality it was finding a ground back through the antenna connections and the connection to the stereo...
 
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Neutron

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Nov 7, 2003
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Texas
Well, I installed a ground loop isolator when I got home.

It was quite easy. It has an RCA male pair end that goes into my aux input port, and a female RCA pair for the Sirius receiver to plug into, then it comes with 2 ground wires.

I used my wiring harness's amplifier ground and connected one of them there. We shall see how it works.
 
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