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| Speaker noise issues caused by PC audio out any Solutions? |
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| dave197878:
My Mk2 cabinet speakers are hooked up to a small amp (cana kit amp) which is connected to the PC audio (green) out. My issue is a have low volume static/hum when there is no volume present. When you play a game it's still there but not as noticeable. Also when im in windows theirs almost a high pitch wine when I move the mouse. The power supply for the amp is good no noise Is present. I know this because I played music thru the same amp and speakers but with an mp3 player as the source with no issues. So this leaves me to believe the PC audio out is at fault. The strange thing is when I hook the PC out to a logitech speaker system (instead of mk2 speakers) the noise seems to disappear. This leads to my questions is there a cheap pre amp filter I can use to cut out any love level sound??? Maybe logitech has one of these filters in there system thats why it's clean? So has got me stumped any help would be appreciaed. |
| MTPPC:
Did you try getting audio from the blue jack on the PC? |
| BobA:
What are you using to supply power to the canna kit amp? Sounds like you have a ground loop problem. These problems manifest themselves by making different noises depending on what the computer is doing. You can hear disk accesses and overall use of the computer as noises in your audio out. |
| GregD:
I am having the same issue. I thought it was the power supply on my Lepai amp but i tried with another source and it appears to be coming from the pc as well. Any way to filer the pc output? |
| eds1275:
You can try doing a ground lift on the audio line. Try disconnecting the ground wire somewhere between the audio output and the amplifier input. This may or may not end the loop of noise - it may make it worse or solve it completely. It is safe to do unlike other types of ground lifts. Another few things to try are making sure your computer doesn't have one of those auto-sensing jacks that has decided your amp is actually a set of headphones. If it has you may be getting more noise than you should be. Option 3 would be to try turning down your pc audio from the master control, and turning up the amp. You could also keep the audio lines away from any power cables in your cab. |
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