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Best Cable for canceling RFI

Problem:
WAY too much rfi interferance from local broadcast FM radio signal.

System:
Jolida 302a Integrated Amp, Castle Acoustice Richmonds, Rega Planet 2000 CDP, Kimber 4pr speaker cable. DIY power cable.

I have tested everything and all interconnects disconnected

I am getting an identifiable signal from a local FM radio broadcast - 91.5 Brooklyn New York - SUNY rebroadcast of foreign radio - when nothing but my amp plugged into the outlet.

I build my own power cable - Shielded Belden Cable with Shurtere IEC and Marinco Hospital grade wall plug. I grounded the shield at the wall plug end.

I was listening last night and it's driving me mad!

How to fix? New power cable? w/RFI canceling? Will it REALLY make a diference? Will 'power conditioning' help? Like an 'on-line' UPS?

Much thanks in advance for you thoughts.
keithcady

Showing 2 responses by marakanetz

marakanetz's avatar
marakanetz
5,473 posts
 
Before you go for power conditioner, get(they're refundable) AudioQuest RF traps(junior model) from www.needledoctor.com and try to place them onto power cords, interconnect and speaker cables.
marakanetz's avatar
marakanetz
5,473 posts
 
Ha! now I'm catching on...
No one mention about input small signal tubes(or a poorly designed input circuitry). I'm not sure what input tubes are there in Jolida but I think that 80% of your problem are either inside or outside the input tubes + you've probably got a sensitive amp. I believe that further follow-ups can advise you which tubes you should try. IMHO the circuitry have to have a free of microphonics designe no-matter what tubes you're using.
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