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streaming music from PC to home stereo

I am trying to hook up my PC to my home stereo. I have a cable with a stereo mini plug connected to the speaker out port on my audio card and a pair of RCA plugs going to the tape monitor inputs on my home theater receiver. When I try to play music through the home theater receiver, I get music but also a pronounced hum. My cable is 25 feet long to get from one room to another, but a test with a MP# player produced hum-free music over the cable to the home theater receiver. Anyone have a suggestion for where this hum comes from? Is it because the speaker oout levels are incompatible with the tape monitor inputs? If so, do I need a new card with line level output or can I use a different input on my receiver to match the levels from the audio card?

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50Hz ground hum

In reply to: streaming music from PC to home stereo

This is a common problem, which can easily be solved by using a ground lift, or (if you're feeling fancy) a DI, or Direct Input box. Computers are notoriously noisy sound sources. Headphones work fine because they do not try to amplify beyond the meager levels produced by a typical soundcard. PC speakers are magnetically shielded and provide the necessary ground lift to solve this problem.

Here is a link for more info... good luck!

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