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Sick and tired of hum-please read

JBL 4345's
Canary 500 monoblocks using emission lab 300B tubes
PS Audio MK ll Dac
Dish Network VIP 612 DVR
Dedicated 120 line from panel

You name it, I've tried it. I have a low level 60hz hum that I for some crazy reason am unable to get rid of.

Lifting the ground, power re-generators, cable changes, equipment to equipment grounding, Satellite new cable and grounding and turning off the whole house except my music room has not resolved. The only explanation I can conclude is that 300B tube amps and very high efficiency speakers will always produce hum. Drives me crazy. This subject has been beaten to death but if any of you guys has any out of the box ideas other than the obvious, I would be interested to hear. Thank you in advance
invstbiker
roscoeiii's avatar
roscoeiii
1,155 posts
 
Know anyone else nearby with efficient speakers? If so, try the amp out there to see if you have the same problem.
orpheus10
5,988 posts
 
Fluorescent lighting will cause hum to a phono cartridge for sure. If that's the case, those lights could cause hum to a lesser degree in other sources.
jond's avatar
jond
3,400 posts
 
I agree the amps sound like the culprit, perhaps residual transformer hum coming through the speakers?
b_limo's avatar
b_limo
829 posts
 
Had a ground loop hum also. Got rid of it when I went from rca's to xlr's. Whiskey helped in the interim.
blueskiespbd's avatar
blueskiespbd
161 posts
 
I got my hum to go away when I ran a new ground from the cable tv coaxial connector to a 6 ft copper coated rod I drove into the ground.
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