2. analog
  3. 136022-53619

Furman solves ground loop issue?

I have a serious ground loop problem with my analog side. Digital is dead quiet.
Loud hum comes from the speakers when analog input is turned on.
Becomes louder when I increase gain.
A salesman said that if I plug my analog components into a Furman PL-PLUS C - 15A w/Voltmeter 
this would solve the problem.

Have tried all the usual methods-cheater plugs, transformers, using another circuit, grounding with copper wire, switching interconnects, but nothing works.
Something is going on between the pre and the phono stage. Tried a different make phono stage and the problem is still there.
Have spoken with people with all brands involved and nobody could help me.

Anybody have any experience with this product? Would it solve this hum problem?

Thank you
roxy1927

Showing 2 responses by cleeds

cleeds
6,071 posts
 
engineears


... a different system with a headphone amplifier connected to a DAC with a pair of XLR cables in a balanced differential setup was getting horrendous ground hum ... I snapped both ground pins off the (removable) power cables. Hum gone instantly. (I don’t recommend this unless you know what you’re doing and what the source of your hum is ...
I don’t recommend eliminating safety grounds under any circumstance - that’s treating the symptom rather than the disease. It can be useful as a diagnostic tool to isolate the source of a ground loop, but it’s not a solution to the problem.
cleeds
6,071 posts
 
Many things can cause hum in an audio system - it's not always a ground loop. What do you mean when you say the problem is only with analog? Do you mean only the phono stage, or any analog input?
It would be helpful if you tell us more about the equipment you are using.
Is this a new problem with existing equipment, or is the gear new to you?
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