Am a bit confused about what has changed. Seems like hum came when you changed room...and the gear change was a switch to single ended rather than balanced cables from phono stage, and new speakers? Speakers and amp seem to check out ok, correct? But the phono cable introduces the noise? Can you go back to balanced cables to see if that matters? If not, can you adjust the gain level on the phono to see if that has any effect?
Can't tell,if my house is properly grounded
Hey guys, I have a low level hi/low buzz that is coming through my speakers, not dependent on the integrated tube amps volume. It is amplified when I turn on my Parasound JC3+ Phono preamp, but only slightly. I have the power cords going to the same outlet. I tried running their power through my Furman Elite Power conditioner but that changed nothing. I ran an independent ground wire and checked all the components in various configurations to no avail. I disconnected all the tv cable to make sure it wasn't coming from there and that solved nothing either. I turned off everything in the house I could' no change. I checked my ground outside at the rod and it is all solidly connected, however the depth of the rod is unknown.
any other thoughts before I call out an electrician?
any other thoughts before I call out an electrician?