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In Reply to: RE: Does this make sense to you ? posted by beppe61 on April 19, 2015 at 22:41:52
There are seeming contradictions in the video. If the dielectric carries the signal at 78% of the speed of light (?, IIRC), and is faster than the conductor, then it sort of ignores the rational scientific basis of resistivity of materials, which ranks silver as #1 closely followed by copper. Most plastics are not even close.
I firmly believe that Cardas had something else in mind, otherwise why bother with the conductor and simply use the dielectric instead.
Empirically I know that dielectric material can affect the conductor , and some very detrimentally, particularly those dielectrics which use carbon as the coloring agent. Carbon itself, although used by such luminaries as A.J. Vandenhul, has very high resistance, indicating that it should have a noticeable group delay.
Perhaps he was visualizing the conductor and insulation interface as being a waveguide, factoring some air space, which can carry signal, particularly the highs( the bundled litz construction of the Cardas designs would lend itself to being sensitive to this artifact).
The interviewer, though, never asks the obvious questions.
The inductors he mentions for the phone lines can be seen in MIT and Transparent and Monster products, although I am sure they are adjusted for different frequencies. Brisson once said the boxes on his cable desings were to adjust for the differences in the three wire gauges used in his cable construction.
FWIW and YMMV
Follow Ups:
Hi and thanks a lot for the very valuable advice.
Above all other things is this idea of a "conductive" dielectric.
To me it sounds like a water fuel ... a non sense i mean.
Dielectrics do not carry any signal, any voltage.
Actually they stop signals. They act like a barrier for electrons.
Maybe i am trivializing ...
Or better, as you say, " he had something else in mind " ?
Thanks again.
Kind regards,
bg
Edits: 04/20/15
Actually some dielectrics have limited signal carrying capability. You can look this up in wikipedia under dielectric. It seems that the dielectrics will react to a charge fairly quickly, and becomes polarized.The degree of polarization and the retention of polarity is what determines the dielectric "memory". The best insulation with the lowest " memory" Is polystyrene, even lower than teflon.
It could be that Cardas has found an insulation where this difference in insulation polarities ( inner vs outer surface) can be utilized as a high frequency waveguide.
The wikipedia article mentions frequencies in the RF range. If there is a lot of subharmonics then it can affect the lower audio frequencies.
Sorry to be so vague, but this is relatively new territory for me.
Edits: 04/20/15
Hi and thanks again.
I was clearly trivializing a very complex issue.
As i said i am trying to catch some principles, but it is difficult.
Of course i love Cardas cables. I have already a 300B and i am waiting for a Hexlink Golden V xlr.
It could be my definitive cable if it will give me the midrange i am looking for. I am obsessed by the midrange.
Thanks again.
Kind regards,
bg
bg,
I haven't heard a large variety of cables, but Cardas has bested a number of brands that I have heard in regard to midrange (IMO).
The only issue I have heard with Cardas is a slight possible exaggeration in the upper bass/low midrange (which decreases as you go up in their line.
I have not auditioned any of their current cable releases.
Happy Listening!
DeeCee
Hi and thanks a lot for confirming me what has been also my impression
I have bought also other cables to compare with the Hexlinks
I want to check if the good midrange is mostly due to the use of litz wires in the cables, as i suspect.
I am curious to compare them
Thanks again.
Kind regards,
bg
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