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In Reply to: RE: My mistake. I should have been more clear. posted by stehno on November 01, 2014 at 00:03:06
Stehno,I am aware that all components export their corruption and that is why I place analog components on one circuit and dirty digital components like my Mac Mini computer on another always using a separate AC wall outlet per component. In the case of the amplifier and Mac Mini I run a Teflon covered, silver-coated 18-gauge copper wire from the ground of the AC wall outlet to the brass water pipe fitting under respectively the kitchen sink and bathroom basin in order to bypass most domestic corruption through the miles of connected water pipes. (The Mac Mini earth being accessed through its microphone input.) The Shunyata Venom Digital Power Cable on the Mac Mini has a filter to stop it exporting its corruption which I considerably reduced by wrapping its internal power-supply in UltraPerm 80 (MuMetal). All this markedly reduces the noise floor so I suppose that unreliable AC quality, vibration, EMI distortion and component/ domestic corruption are the principal enemies of good sound. Lack of funds prevents me fighting the first but I can imagine that, when corrected, the music sounds solid without mis-timings.
Substituting nylon screws for stainless steel/ brass does have to be evaluated on a case-by-case basis. For example, it resulted in a spacey, ungrounded sound when I replaced the 6-32 brass screw holding the AC wall outlet covers with nylon. One of my next tests will be to see whether running a twisted pair of silver-coated 18-gauge copper wires from the amplifier and Mac Mini AC wall outlet ground to the brass water pipe fittings will diminish EMI and lead to a further reduction in the noise floor.
DG
Edits: 11/01/14Follow Ups:
Yes, many are not away that digital noise exists and even fewer are aware that it's bi-directional, meaning it goes back into the wall and supposedly even as far back as the service panel to affect other circuits, lines, components, etc.
I've done enough testing to verify it exists and is certainly worth curing.
My line conditioners are also bi-directional filtering which, in my case, doesn't matter since each component has its own line conditioner.
As for grounding, I've found the best is no ground.
I just don't have any experience with swapping screws. I don't think I'd have that kind of patience.
But I'm all for cryo-treating every electronic part and cable that is reaonsable for me to disassemble or purchase and install.
Stehno,
I used to float the ground on my amplifier which was way ahead of sharing the domestic ground corruption via the AC wall outlet ground. Then it occurred to me that the amplifier's performance while sitting in its own component corruption could hardly be at its best while, like a baby, it was sitting in soiled nappies. So I connected different wires from the AC wall outlet to the brass fitting of water pipes (under the kitchen sink and bathroom basin) that extend for miles and are uncorrupted by the noise from domestic accessories. Simple Teflon-covered solid-core copper wire was okay but Teflon-covered, stranded copper was decidedly better and Teflon-covered, silver-coated, stranded 18-gauge copper wire was best of all because the treble notes were then revealed fully for the first time. I started by disconnecting the house-ground at the AC wall outlets but found connecting both the house ground AND the Teflon-covered/ siver-coated/ stranded 18-gauge copper wire going to the brass-fitting of the water-pipe ground led to the best sound even though that defies logic. Now I am going to test a twisted pair of Teflon-covered, silver-coated, stranded 16-gauge copper wires to the water-pipe ground to hear whether more than doubling the surface area of the connection improves the sound.
If you heard the level of musical distortion caused by stainless-steel amplifier screws in proximity to the musical signal/electrical charge, I believe you would not be able to stop yourself from developing the patience to replace them all regardless of effort. The payoff in decreasing harshness/ fatigue and revealed musical detail is simply too rewarding.
Am sure that you are correct about the benefits of cryo-ing.
DG
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