Quote: Original posted by
SilentOne
(Regarding your WA22, I know what it's like to have a beautiful passage marred by hum. That has been my story over the weekend - decided not to indulge my Woo. Your hum is interesting though in that you hear it in a single channel? I wonder if this is a case of one of your tubes picking up the EMF? I have always had hum in stereo, not mono. And the problem was usually centered a cable or satellite coax needing a better ground. This, despite not even being near the system. But, you know what they say, once the nasties get airborne, all antennas or cables acting as antennas are in trouble!
Curiously, have you given thought to were you placed your system? Or is it placed simply were it is practical because of furnishings and decor? Do you happen to have Cable or Satellite TV inside the home where the system is? One thing you should try is temporarily moving your system. Even if you don't plan leaving it in the new spot, your investigation may yield surprises by moving around the room in search of an optimum location. It could take a lot of time, maybe not. But the rewards could be huge!)
Well, to tell the truth I have already made all that you suggest, I also moved my WA22 in my parking box (I live in an four-stories apartment building and my parking box is not near my apartment). I hear the hum everywhere I go, in some room is slighty less audible but it is present, also now that with my Naim I am using a balanced interconnect cable to WA22, the hum is it less audible and, strange but true, if I put volume at maximum level it disappears! Last wedsneday I took my WA22 to the shop of my Naim retailer (and friend) and there was no hum at all! So we believe there is some EMF interference (I don't have cable TV but on my apartment building's roof there is a Satellite antenna) and it is not easy to find a solution because I can't insulate my room (at this moment I don't have the money since I have just ordered my second 555 Naim power supply!)