Jim, A couple questions for ya... 1. Have you tried a different set of speakers, or the onboard speaker? 2. What were you doing when it started, do you remember? My FW-800 G4 did the same, it was a short in the connection from the computer to the speakers... Hope that helps, Nick Jim Dean wrote: >My digital speakers recently began emitting a high-pitched, >interference-like sound when the volume is cranked up. This is a >processor-upgraded 533 Digital Audio G4. It started the behavior in the past >week. Nothing in the hardware or software has been changed in at least two >months. I have restarted the machine, unplugged and replugged the speakers >and turned off various nearby electronic devices. > >Thoughts? > >Thanks, > >Jim Dean > >_______________________________________________ >G4 mailing list >G4 at listserver.themacintoshguy.com >http://listserver.themacintoshguy.com/mailman/listinfo/g4 > >