If I'm not mistaken low level hum is usually a ground issue. Is your abode a modern one or do you live in an old building? I know many old buildings do not have grounded electrical, so you need to find a true ground to tap into to overcome it. Also, all tube make noise, but this is usually not very noticeable unless the volume is up pretty high (on my Cary SLI-80 that is). Sometimes you will get a very noisy tube, however, so you might look into that. I almost bought a the Fosgate that you have until my local dealer told me that they are rather tricky to match the tubes to the desired sound. He did not mention hum or tube noise, only that this amp is pretty finicky and that tube rolling is part of owning one. I'm not sure what to tell you about RF. I get it as well but only through my phono section so I think it is the cartridge that picks it up, and it is not audible when playing music.
Help with my analog rig.
Recently, being bit with analogitis, I purchased the best sounding analog I ever had the pleasure of owning; VPI Classic 3, Lyra Kleos cartridge, and a Fosgate phono preamp. Everything sounds wonderful, EXCEPT....a constant low level hum (that increases with volume), and a problem with RF that seems to come and go.
Everything is plugged into a Running Springs Audio power conditioner. I've tried everything. This thing is haunting me. All of my cables are dressed and spaced apart properly.
I've been checking posts about analog noise, and there seems to be a lot of people experiencing the same problem as I am. Especially, if they are
using a tube phono preamp. The only thing I can think of is trying a Grant
Audio Ground Zero. According to what I have read, it will address the
hum problem, but I still may be left with the RF problem.
I absolutely love the sonic quality of the Fosgate, but if this tube preamp is the source of my noise problems, perhaps I should think about solid state. However, I love what these tubes are doing in my system!
Sorry if I keep rambling. Anyone out there have any suggestions or recommendations about what I can do?
In advance, thanks.
Everything is plugged into a Running Springs Audio power conditioner. I've tried everything. This thing is haunting me. All of my cables are dressed and spaced apart properly.
I've been checking posts about analog noise, and there seems to be a lot of people experiencing the same problem as I am. Especially, if they are
using a tube phono preamp. The only thing I can think of is trying a Grant
Audio Ground Zero. According to what I have read, it will address the
hum problem, but I still may be left with the RF problem.
I absolutely love the sonic quality of the Fosgate, but if this tube preamp is the source of my noise problems, perhaps I should think about solid state. However, I love what these tubes are doing in my system!
Sorry if I keep rambling. Anyone out there have any suggestions or recommendations about what I can do?
In advance, thanks.