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HD DVR cable box causing buzzing in my kef Eggs!

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Old 10-31-2007, 09:49 PM   #1
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Default HD DVR cable box causing buzzing in my kef Eggs!

Great site!

So I recently purchased a 5.1 KEF KHT2005.2 surround sound and an onkyo tx-sr505 7.1 receiver to connect to my 47" flat panel lcd. Got the speakers for $500 and the receiver for $200 as floor models, so I thought it was a pretty good deal.

The problem was my surrounds had a serious buzzing issue, even when the reciever was down to 0. Between dialog on the tv, you could hear the buzz.

I had my hd dvr cable box connected via hdmi and digital out to the reciever, then hdmi to the tv (on the 505, you must connect separate audio, the hdmi is just a pass through). Well, I tracked the buzz to the cable box, specifically to the cable line. Even if I unplug the power from my cable box, the buzz will continue. Only when I unscrew the actual cable line will it stop. As soon as I touch either the hdmi or digital out from the cable box to my receiver, the buzz will start with the cable line in.

So I'm wondering what to do at this point. Is this a cable company problem? Should I get them out here and tell them to run a brand new line? I have an older house and suggest a ground loop in the cable line. Any help will be appreciated!

Thanks!

And I have been using monoprice cables and am amazed with the quality/price.

Also, while I'm on here, my kef sub has a left and right input, but my receiver only has a single sub output. I have just connected it to the sub left, but I don'tt know if that is right, it didnt come w/ a manual! Thanks again!
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Old 11-01-2007, 08:50 AM   #2
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I'm not an electrical expert, but a while back I remember some people experiencing a similar problem with their cable boxes. The solution to this was having the cable company come out and check to be sure the cable connections on the exterior of the house are properly grounded. They are supposed to run a ground wire off the connection. In my case they clipped it onto the metal case of our electric meter.

I had had cable with Comcast for years before a tech recognized the problem and fixed it.
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