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In Reply to: Is Teflon is bad for silver? posted by Psychicanimal on May 13, 2003 at 07:32:44:
Dear Psychicanimal,
We conducted extensive listening tests on insulation materials in the early 1980's using 99.99% pure silver wires and Teflon/PTFE came out very poorly, as did several other popular "high-spec" plastics.We found that several layers of polyurethane on each wire sounded by far the best, when twisted in bundles of 15 - 40 strands, "strapped" in a polyester foam and then a "hard" jacket.
Low dielectric constant is important at radio frequencies and for radar and other such applications, but I think it is a mistake to assume that they matter as much at audio frequencies.
In my view the audio signal is as much an electromechanical shockwave, as a pure current/voltage, wherefore the mechanical "memory" of the materials used become important.
This would also explain why organic materials like cotton, beeswax, silk and wood sound extremely good, impractical for normal production requirements, but excellent sonically.
Age annealing the silver wire also yields some benefit, although there are ways of achieving the same improvements without having to wait for 20 or 30 years.
Sincerely,
Peter Qvortrup
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Follow Ups
- Re: Is Teflon is bad for silver? - Peter Qvortrup 01:57:48 05/14/03 (2)
- My observations line up with Peter's - dado4 09:27:37 05/14/03 (0)
- This is the best answer--by far. - Psychicanimal 09:26:26 05/14/03 (0)
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