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I found a thread on a similar subject in the Amps/Receivers forum, and posted my issue in that thread, but that forum just moves soooo fast that the thread ends up off the page within an hour or so. Maybe someone here can help?
I have a tower PC I built back in mid-2006 on one side of my living room. My TV and Onkyo 7.1 receiver are on the other side of the room. I cut a plate with RCA jacks into the walls on each side of the room, and connected those wall plates through my attic with RG6 cable terminated with RCA connectors. I have a stereo mini-jack-to-RCA cable from my computer's motherboard to the RCA wall jacks, and another RCA cable from the wall jacks on the other side to the Onkyo receiver.
I keep the computer's volume usually below 1/2, and I can hear a high-pitched whine through the stereo speakers that gets louder as I turn the receiver volume up. I'm wondering if this is some kind of electrical interference from my computer's power supply? I'm using an Antec 450W computer power supply, which is one of the more well-known, well-regarded brands of computer power supplies, at least from what I could tell from my research when building the system. Also, the computer is plugged into an APC battery backup/surge suppressor, which is then plugged into the house wall outlet.
The thread I posted in earlier had a link to a Radio Shack ground-isolating RCA cable. If I installed this between the wall and the Onkyo receiver, would help with the problem?
http://www.radioshack.com/product/in...entPage=search
I have a tower PC I built back in mid-2006 on one side of my living room. My TV and Onkyo 7.1 receiver are on the other side of the room. I cut a plate with RCA jacks into the walls on each side of the room, and connected those wall plates through my attic with RG6 cable terminated with RCA connectors. I have a stereo mini-jack-to-RCA cable from my computer's motherboard to the RCA wall jacks, and another RCA cable from the wall jacks on the other side to the Onkyo receiver.
I keep the computer's volume usually below 1/2, and I can hear a high-pitched whine through the stereo speakers that gets louder as I turn the receiver volume up. I'm wondering if this is some kind of electrical interference from my computer's power supply? I'm using an Antec 450W computer power supply, which is one of the more well-known, well-regarded brands of computer power supplies, at least from what I could tell from my research when building the system. Also, the computer is plugged into an APC battery backup/surge suppressor, which is then plugged into the house wall outlet.
The thread I posted in earlier had a link to a Radio Shack ground-isolating RCA cable. If I installed this between the wall and the Onkyo receiver, would help with the problem?
http://www.radioshack.com/product/in...entPage=search