Hey guys,
I think I have some sort of electric ground loop and I'm out of ideas on how to fix it. I have both a laptop and a desktop that I use at the same time (not really but they're working at the same time) and I'm running Kanto YU2s with a SUB8 to have audio from two sources. However when I plug the AUX cable to my desktop's onboard audio, I hear this weird hum that increases when I crank up the volume. Do you know how I can resolve this? or can you think of any ideas? I have this crude diagram that explains what I currently have plugged in (although there are some peripherals that are not shown here for simplicity) Thank you in advance!
https://imgur.com/a/09XH4lJ -> Imgur direct link to diagram