Is the RFI problem channel (its cable, for example) closer to a window? Is one side's cable looped (acts as an antenna)? Try turning the phono or pre 90 degrees... Stuff like that can impact in-city RFI problems. Where I used to live, there was so much RFI coming in the windows, I had to move the system (minus the speakers) downstairs. Nothing else worked (RFI blockers, cable wraps, etc.)
RFI issues in phono stage-one channel only ??
Running BAT VKp10 phono into VK50se pre. The left channel has RFI intermittently. Can get loud enough to interfere with the music, and not just on quiet passages. Sounds like a spanish radio/tv station.
Also, any time the furnace or certain light switches get turned on, I get a pop, rather loud, through the same channel. This does not occur on other sources.
The RFI used to be in both channels, but a new tonearm lead and shorting plugs (for the unused XLR input on phono stage) took care of that.
Could this be a bad tube ? Grounding issues in a cable on one side only? Ideas? Thanks in advance.
Also, any time the furnace or certain light switches get turned on, I get a pop, rather loud, through the same channel. This does not occur on other sources.
The RFI used to be in both channels, but a new tonearm lead and shorting plugs (for the unused XLR input on phono stage) took care of that.
Could this be a bad tube ? Grounding issues in a cable on one side only? Ideas? Thanks in advance.