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Ok the pwer suppy for my VAC Stadard puts out a ton of electromagnetic radiation (tested with non contact A/C voltage detector.
I solved the PSu itself with a VPI 'brick' on top, and a real patio brick on the side away from the wall.
I then tried to completely wrap the PSU umbilical with copper foil, then over the copper some aluminum tape (both at hand). Well the foil worked when it was loose, just blocking the direct path between the umbilical and Greenlee Votage detector, But once it was wrapped around the cord. No good. The energy was as strong radiating from the cord as before AND the sound of the tube preamp suddenly got strident. Total failure. Cut the stuff off the unbilical.
TThen i had a bit of antistatic foam left. I cut into stripes and wrapped the stripes down the umbilical cord with blue Aussie Teflon pipe tape (thick, like pink tape) So the flat foam was rolled up as a tube around the umbilical, and the teflon compressing it slightly and closed the foam gap in the open side.
This worked perfectly. Zero emmisions detectable from the PSU umbilical cable, and the sound was NOT damaged from the VAC.
So if you ever want to wrap a wire to prevent EMR radiating FROM it, forget copper or other blocking/reflective stuff, and use an absorptive thing like the antistatic foam.
(If the EMR is outside and you want to protect the wire from it, then the copper or other shield is the way to go.)
Just thought i would relate my experiment.
Follow Ups:
I mena this in a good way.
Of course, from what I understand, you were born a woman which makes you different ...
But, Lumley was a great tweaker. From the most noble of ideals: to get the best spossible sound from her average components, which is where most of us are.
Don't know what happened to her. First was worte for the ABOSLUTE SOUND and then was writing for Peter Moncreif and then, she disappeared. Well, she disappeared from my consciousness.
I will never throw away a piece of anti-static foam EVER again!
Her ideas of cable risers was greeted with real hatred. Now nearly anyone can see that they might be useful. back then it was call bullshit. and not only the ideas, but she herself was attacked. One reason she quit audio was the vile crap spewed her way.
I do not compair myself to Enid. i held off saying anything until a got old enough to just not give a Damn about the howlers. Who do seem to take it personally that a woman has a clue about audio stuff.
And I am willing to dish it right back. Where i think Enid just took it, until she just wanted out.
"Don't know what happened to her. First was worte for the ABOSLUTE SOUND and then was writing for Peter Moncreif and then, she disappeared. Well, she disappeared from my consciousness."
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
Wonder what she did between IAR and her death? Wonder if she retained here interest in music and audio.
I always heard stories of sexual ambiguities and undoubtedly I have something wrong in my memory which is due to what I had been told.
Her enthusuasm for finding way to make her system sound better were inspiring to me and most of then I tried. She was an innovator.
Thanks for the notice.
Rick McInnis
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