Member Avatar for wwisconsin

I digitized all my CD's so I can listen to music via PC connection to my stereo receiver. I plugged an A/V adapter into the green 1/8" sound output port on the back of the computer, then connected it to my receiver with 2 regular a/v cords.

The sound comes thru good, but there is a low frequency humm in the background. I tried using different input ports on the receiver such as CD, Phono, Video 1, etc. I still have the humm.

Is there any way to get rid of it?
Thanks

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  • Latest Post Latest Post by jbennet

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Good to see 's suggestion fixed things for . If the low-frequency hum returns (or if others run into it) these targeted checks address the usual electrical and wiring causes rather than only changing volume.

  • Test for a ground loop: temporarily plug the PC and the receiver into the same outlet or power strip. If the hum drops, a ground loop is likely; a quality inline RCA ground‑loop isolator or a properly implemented ground lift on the audio gear can cure it. Do not remove safety grounds or defeat safety wiring.
  • Bypass the analog path: if available, use a digital output (S/PDIF/optical) or an external USB DAC. Digital connections remove the analog ground path and often eliminate hum.
  • Improve cabling and routing: replace cheap adapters with a short, well‑shielded cable, keep audio runs away from the PC power supply, monitor cables and other noisy components, and consider a ferrite core on the cable.
  • Check software and drivers: update the sound driver, disable audio "enhancements" or mic/line boost in the OS sound control panel, and confirm no recording/input devices are feeding back into the output.
  • Isolate the source: try headphones and alternate outputs to see whether the noise is in the PC output or the receiver input.

For background reading on electrically caused hums and ground loops, see the ground loop article. If unsure, a simple inline isolator or a modest USB DAC is an inexpensive, safe next step.

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Member Avatar for jbennet

try playing with the sound levels on the pc and on the sound systems ampilifier

i found this when using my Xbox with my hi-fi.

Try and set the xbox (pc in your case) to lowest vol and then using the hifi to adjust the volume to teh desired level.

Member Avatar for wwisconsin

That did the trick.
Thanks

Member Avatar for jbennet

yeah, it distrorts because you are amplifying stuff thats already been amplified

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