Buzzing from speakers

arknor · 18 Apr 2026 at 00:35

Decoman said:
The optical out (S/PDIF) port on the motherboard (if any) will be better than usb audio, should remove buzzing from mouse pointer moving around on screen.

you can get isolator for usb https://www.amazon.co.uk/dp/B0CSYNSZ3K?th=1 almost 30quid though :S I think they were like 15 when I bought one a few years ago, it does work though.

NetMan · 20 Apr 2026 at 11:01

markwilliams82 said:
My audio goes via HDMI to an AVR

The AVR has my PC, PS5 and laptop connected to it. I've added ferrite cores to the HDMI and power cables coming out of the PC but still get it.

Disconnect everything from the AVR except the PC turn the vol down to zero on the AVR and 100% on the PC then turn the vol up to your desired listning level on the AVR; is it still as bad?

The reason I suggest doing this is because if the PC output is low then you need to have the amp cranked up to a higher level and that will amplify the interference more than having the PC output set high and the amp on a lower setting.

Ferrites are hit and miss, as we have said get an optical cable, I suggested an optical HDMI others have suggested an optical S/PDIF.

The next thing would be to start swapping components e.g. the PSU or buy a new AVR but then it starts getting expensive.

markwilliams82 · 20 Apr 2026 at 21:39

Tried hdmi to the board, still get the same so I’ll try optical next tomorrow night

markwilliams82 · 23 Apr 2026 at 20:14

Tried optical cable, still a buzz - strangely dont get it when graphics are their most intense. Its during map displays or load screens

Elfmeister. · 23 Apr 2026 at 20:58

markwilliams82 said:
Tried optical cable, still a buzz - strangely dont get it when graphics are their most intense. Its during map displays or load screens

Sounds like coil whine from the GPU to me then. Try a frame cap or enabling V-sync to see if the issue persists under those circumstances.