🚀 go-pugleaf

<Andrew_Angell@adobeforums.com> wrote in message
news:3bb9a9e7.23@webx.la2eafNXanI


> Times have changed, though. I recently bought a house and
> the cable people had to run a line into my office. I'm
> getting the same type of bad audio noise when I plug a
> cable box up to any audio source: my computer, 3rd party
> subwoofer/speaker set, etc. When I use the same exact
> audio cables with a DVD player it works without any noise
> at all.
>
> At first I was thinking it must be the cable box...a bad
> connection where the RCA's plug onto it. When I unplug
> the RCA's from it and touch the ends you can hear the
> audio noise really loud, naturally. As soon as I plug
> them back in it goes back to the more suddle noise that
> comes out in my recordings.
>
> Then, and I dont really know why, but I unplugged the
> coax cable from the back of the cable box while the RCA's
> were still plugged in...and again the bad noise went
> away...and of course all other audio in general. But, it
> got me thinking...could it be the line that's run into my
> office? I have had some strange internet slow downs and
> drop offs since I've been here as well...same cable
> company as I've had for years w/o any problems at all.

You've got a ground loop. A ground loop is caused by
grounding a system more than once.  Any system with a
desktop computer is grounded through its 3-wire cord. Your
cable antenna connection makes the second ground.

The solution is a ground isolator

http://www.epanorama.net/documents/groundloop/antenna_isolator.html