- Nov 6, 2000
- 633
- 0
- 71
My logitech 6.1 system (the model lower than the 640s i think) makes a hissing noise when I have the speakers on but no music (for example) playing. It's not always the case. I just find it annoying when I have them on and i can hear a hissing noise from them. this is on a 400sc with a turtle beach card and onboard sound disabled. My roommate has the same issues with an epox 8rda+ and the nforce onboard sound. He has different speakers though.