Unplug the other equipment from your AC outlets, one at a time, while still disconnected from the Cary.
Noise & Hum Rating
I am having a hum issue - steady state regardless of whether the pre-amp is connected, and no change with an increase in volume - and the amp has been back to Cary where it checked out fine. At this point I've assumed it's a ground loop.
The manual for my amp, a Cary V12R, states "Noise/Hum: > 84db below rated output." Output on the amp is 50 watts triode and 100 watts UL. Does the rating suggest that there will always be some hum and that this is normal? Does anyone know how this rating works at a practical level? Cary didn't have much of an explanation except to say that yes, some hum is normal.
Thanks!
The manual for my amp, a Cary V12R, states "Noise/Hum: > 84db below rated output." Output on the amp is 50 watts triode and 100 watts UL. Does the rating suggest that there will always be some hum and that this is normal? Does anyone know how this rating works at a practical level? Cary didn't have much of an explanation except to say that yes, some hum is normal.
Thanks!