It's late here, but last time I did the equation, AC at 50, or even 60Hz had a wavelength of several kilometers. ie you needed an ariel of that kind of distance to pick up anything via electromagnetic coupling. I have transformers, and a pile of power wires behind my system. I have never heard any 50 or 60Hz hum.
With all this 'stuff' emitting such "noise", I can have my transporter playing nothing, into a Denon 3805 AVR, feeding a Rotel RMB 1085 power amp into B&W 804's with the Denon 'pre-amp' wound up to what would be window shattering volume & I hear nothing. Into tsunami inducing volume levels, there is a slight hiss detectable at one meter distance from the speakers. I know what 50/60Hz and harmonics thereof hum sounds like and there is none of this, despite my wiring being a 'mess' with a 1500 and a 1000w 220/110V transformer sitting under the wires. 50/60Hz frequencies do not couple into wiring in a conventional sized house via electromagnetic phenomena. If you have power frequency hum from your speakers, you have an 'ohmic' (copper) problem, not a transmission through air. Otherwise, I suggest a paper to the Nobel commission claiming a prize for a new law of physics. All of course, inho... Dan (a long time ago, an electrical engineer) -- chinablues ------------------------------------------------------------------------ chinablues's Profile: http://forums.slimdevices.com/member.php?userid=7955 View this thread: http://forums.slimdevices.com/showthread.php?t=34279 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
