HTPC speaker interference / constant buzz?

[snowairg]

I recently hooked up a PC to my home theater receiver and speakers using a 1/8" --> RCA cable. The speakers produce a constant buzz when on the HTPC source, but are perfectly clear if I play a DVD or listen to the radio. Why do the speakers produce this buzz only on the HTPC source and how can I fix this?

Thank you.

 

[montag451]

move the speakers away from all other electrical sources. See if that works - also, try to clean the way the cables are arranged, so that they don't cross each other too much, or too close together

 

[snowairg]

I gave that a try but it doesn't seem to have an affect. The buzzing isn't there on the other sources, so I don't think speaker location or cabling is a problem (I've been using the home theater for years now with perfect sound).

The buzzing is only there with the PC sound hooked up and it gets louder/quieter as I adjust the volume. If the computer volume is really low, and I use mainly the receiver to control volume, the buzzin is worse. If I turn the computer volume to its maximum, the buzzin is reduced.

I'm no audio expert, so I'm confused as to why this is happening...

 

[montag451]

could try updating driver for your soundcard

 

[snowairg]

I've updated drivers, changed cables, you name it. That's why I posted here...

Thanks for the help, though. It still buzzes!