RFI in tube system


Hi Folks,
I need help. I recently set up my tube system in my new house and everything was great for a couple of months. Then I started to pick up significant RFI. I can hear a muted radio station coming through my system and static interference. Driving me crazy.

I've been playing around with cables, equipement, etc and found the following: My Shanling SACD player has output levels, so I bypassed the preamp and hooked my CDP directly into my amps. RFI was gone. So it seems that the preamp is the problem. I've switched out my interconnects and power cords and there's no appreciable difference. I've also tried using another outlet with no improvement.

I'm not sure what I'm doing here as I'm not very technologically savvy, so any advice would be appreciated. I've read here about power conditioners. Would they help? Or RFI Filters on my interconnects & power cord? Or is this going to be an expensive hit-or-miss process.

Thanks in advance for any advice.
scotlynn

Showing 2 responses by sbank

Poorly shielded interconnects are often acting as antennae, so try is to replace yours w/the cheap interconnects that typically come w/olds vcrs(2 wires, white, red, & yellow). They sonically are lousy, but they are usually very well shielded because JVC, Sony etc, expect their customers to have many wires often tangled. If they eliminate the trouble, then shop for highly shielded good sounding interconnects.
Physical line of site to radio signal often comes into play, so try moving gear away from windows, and/or turning gear 90degrees, it might help. Cheers,
Spencer
Don't buy any components to suppress noise until you know what's going on...