Hooking up my power mac to my stereo creates problems?

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Hooking up my power mac to my stereo creates problems?

So I am on my second power mac and am having the same problems when it comes to hooking it up to my home stereo. When everything is hooked up I can hear voices in the background whether or not anything is playing. When I shut the computer off it's still there. However when I unplug the cable from the computer it vanishes.I think its a radio show im hearing by the way. I can't figure this out for the life of me. My first mac (B&W G3) did this and now my current computer is too (DA G4). How do I fix this?

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Buy a shielded audio cable, a

Buy a shielded audio cable, and plug the computer and stereo into a power conditioner or UPS. Nearby radio stations can be strong enough to bleed into unshielded power or audio cable and be amplified. Shielding your connections and using a power conditioner/UPS to buffer your equipment from the electrical grid should clean things up.

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try grounding the computer ch

try grounding the computer chassis to the AM ground connector on the amp or chassis ground. sometimes, but not all, this helps.

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I was having this same proble

I was having this same problem for a while as well. I found that turning off my FM tuner solved it. If your stereo is multiple components, I'd suggest trying this first.

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The FM tuner is always on. bu

The FM tuner is always on. but I dont think it's the stereo as it has no problems on any other device. I just hooked up my normal PC speakers to my computer and I can still hear it.

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RFI: Radio Frequency interference

Hello:

Ditto on the grounded and or shielded speaker wires.
The speaker wires are probably acting like an antenna.
A little corrosion at a connection can act like a diode.

Same theory that the old crystal radios for AM (and other bands) of old may be at work here.
You might be hearing Short Wave, C[hildren's] B[and], or other radio transmissions.

I like the shield, ground, and make sure you have clean connections to the speakers notions, also.

I would have to look in the ARRL Handbook for other ideas, too.
[Amateur Radio Relay League] There may be some advice on the www.arrl.org web page.

Good Luck.
David
KA5GLT ... a real "ham" sometimes

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well I tried the suggestion o

well I tried the suggestion of a ground wire and it almost eliminated it. Is there another spot I could ground it to that might be better?

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If the stereo has a phono/tur

If the stereo has a phono/turntable input, there should be a grounding mount point there as well - a screw down on the back panel. You could try grounding the computer chassis to that.

Jon
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We have that problem even if

We have that problem even if the speakers aren't plugged into anything but wall power. I put several ferrite chokes on the wiring and it quieted it down, but it's still there. I've read that it may also be old wiring in a house that is part of the problem. It was to the point that if I play with the volume I can hear the particular station very clearly. I've since moved the computers to a different room and thus different part of the wiring and the station itself is more limited, but I tend to get a varying interference buzz. It even changes over the course of the day/night. I'd say to follow the advice for a power conditioner.

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I connected the computers "gr

I connected the computers "ground wire" to the ground on the back of the stereo (as shown by the ground symbol). Now the stereo doesn't have a ground pin on the plug (i'm not too experienced with AC voltage.) will this effect it?

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