Dielectric?


I was listening to Bill Frissell "Nashville" last night. This disk has some of Nashville's best studio musicians working with Bill on a fantastically well recorded session. In the second cut there is the tinniest of cymbal, just shimmering in mid air. I'd never heard it shimmer before. As I continued listening I became aware that my system was pure magic and I took full advantage of the opportunity by playing some of my favorites." WOW, this is amazing" I said to myself with a huge Cheshire cat grin. As I was listening I noticed one of my vacuum cleaner hose speaker cables was hanging down while the other was bent slightly up. "This imperfection must go" so down on the floor working the two cables so that they align. ( I know it's sad, but I'm a perfectionist, I've tried to control it, but...) I'm talking maybe one inch or so, the effect on the coppers molecular structure is small, but I've now taken my closed hand and run it over the majority of length in each cable.
The cables looked good so back to my music. "Where is the magic?" I'd killed it completely, the presentation was flat, the shimmer gone. Oh all the information seemed in place, just no life!
My conclusion, the dielectric had over time created a field beyond the confines of the cable housing and I had discharged it, taking away the added benefit of the extended field. My cables are fully suspended so there is nothing within an inch and a half that can effect the extended dielectric. My amps stay on all the time which would retain the charge in the field even when the system is off.
Does this make sense? It's an easy experiment maybe some of you can try it to see if you have a similar result. I'm feeling like the casing of our cables has more to due with the performance than any of the other factors. The dielectric materials used have the ability to retain a potential charge that can be drawn on during high current demands, the cables dielectric in effect is doing the same job the capacitor dielectric is doing only with less efficiency. Plus some materials benefit in the shielding from other wave energy. Is this "the" factor in our power cord and cable discussions that were not giving the proper attention to.
Should we be discussing what materials best retain a charge and best shield wave forces. My reference to wave forces are of course RF, EMI but I've been thinking, there are far more than just that, there is Microwave, Ex-ray, Grama-ray, all emitted daily from the sun. Solar flares and the intense cosmic radiation have been tied to radio fades and power grid failures, I thing there is a lot to discuss here.
I realize I've exposed myself to great ridicule, but I'm far more interested in what I think I'm learning than playing a fool. Thanks for your thoughts, J.D.
jadem6

Showing 5 responses by jadem6

The "Dakinis", not to worry Elizabeth. They ran off to my reference bose system.
Thanks Redkiwi for picking up on what I'm trying to learn here. All my electronics books were written just after the discovery of electricity, back in my collage days, so I'm at a considerable loss. They talk about dielectric constants Ke and dielectric strength V/mil. The Ke of air is 1 and ceramic is 80-1200 with a V/mil of 20 and 600-1250 respectively, where glass for instance is 8 and 335-2000. It would appear from reading further that the V/mil is the number of most importance here, but for the life of me I can't remember learning any of this, so I have no idea if I'm right on that assumption. I'm hoping you or anyone else can help straighten me out.
Anyway, on further exploration I see that glass with it's V/mil of 335-2000, and Mica of 600-1500 are far and away the best. Polystyrene was 500-760, but Teflon is not listed. (I think it's function back then was to sit on the bottom of a frying pan) So my first question is what are the values of Teflon, and how much is it improved with thickness? Is it one to one or ..? Second thought was has anyone tried fiber optic glass tubing as an insulator? Are there other ways to achieve the values of glass, but in a flexible manner? Has anyone tried glass tubes? I was thinking it would be fairly easy to use a gauge of wire as required and pull it through a tube. With a simple gas torch one could bend the glass 90 degrees. A solid interconnect could be built I guess. This sounds like a real pain though, I can just see an earthquake in California, or New Zealand for that matter and all the interconnects popping, not good!
All I seem to have is questions, maybe more where they came from. Anyone who can help in this brainstorm please feel free. J.D.
Would it make sence that a high K or larger potential storage would be benifitial to a power cord, allowing for a greater discharge potential during extreme current demands?
Great post Al, and welcome. You are correct that all I did was to rub my hand over maybe 50% of the length of the cables. I have two cables, but only for bi-amping so two wires are in each cable. I wanted to share my experience because it's simple to test by others on their own systems. I was hoping to hear if others would experience the same thing. If so it might be interesting to figure out what was happening and see if it was a measurable issue. I will write you soon, maybe the three of us can work on some of these experiments together in that it appears we both are talking with Sq off site.
Thanks again for the post and welcome! J.D.
Ernie, I think you are on to something. With the, count them 23 pills I take each an every day to keep me alive I'd guess moving my hand would change my body/ sound. Maybe I should start taking my blood pressure during listening to help understand yet another variable.

Nilthepill, I'll check it out. Right now I have no pre-amp so I have no music. Warning to all.... do not leave your power supply running when a leak forms in your house just above the supply. This makes for a char-boil set of components, but I must say the background is quite black and dead silent!

Jeff Delman I agree. I wish we had a way to physically measure this phenomenon. Does anyone have a thought of how to actually document the change?