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
erik_squires
16,013 posts
 
A - I am a huge fan of Furman gear. It won't resolve most ground loop issues. 

B - NEVER remove a center/ground pin from an AC receptacle. 

C - Cable/Antenna ground loops are super cheap to resolve. :) 

https://amzn.to/2IqMTXW

Though with powered antennas like for DirecTV, you'll need a more expensive version. 

Best,

E
roxy1927 OP
125 posts
 
It started when I upgraded equipment. Went from a ss pre and amp. Now my pre is tube/ss and amp is ss. The digital sound is so much better with this new equipment but the hum(once I even got a radio station) is too loud for me to enjoy analog and I miss it a lot. I have an allnic H3000 and HA3000 and they sounded tremendous. When I remove the turntable from the equation hum is still there.

I think something is going on between the pre and the Allnic H3000. Live in a very large apartment building and my listening room is small so my options are limited. I thought I might try the Furman and if it doesn't work just return it. All interconnects and power cords worked fine with old equipment. 
twoleftears's avatar
twoleftears
5,315 posts
 
https://www.psaudio.com/ps_how/how-to-find-and-fix-hum/
roxy1927 OP
125 posts
 
Thank you. I hope I can find something that will work. It's been a while now and I'm getting worried. I've enjoyed analog too much to be without it besides the money spent.
erik_squires
16,013 posts
 
you know, honestly, while I do not recommend cheater plugs, if using them, removing Cable TV, and or making sure your pre and turntable are hooked up to the same outlet doesn't fix it: 

1 - You don't have a ground loop, you have noise. Try turning everything else in the house off. 
2 - You have a bad phono stage. 
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