Is this for blind testing of caps? If so, that would be interesting. Over at Hydrogenaudio, one high-end manufacturer claimed that V-caps could easily be differentiated from other high-quality film caps in blind testing. Of course, he provided no results to substantiate that claim. If that's what you're doing, it would be great to see a summary of the results once you have them. Then I could post a link to the results in that Hydrogenaudio thread.
Edit:Here is the link.
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I'm not interested in "winning," I'm interested in trying a new controlled subjective test method and seeing if anything can come out of it. And if I have some fun with it, so much the better.
Of capacitors? Not exactly correct. What "science" says is that the effects are totally unmeasurable, contradict the same body of knowledge that makes your computer run and allows us to observe and quantify distant planets, and have exactly zero evidence behind them. All it takes is one good experiment by someone asserting the extraordinary claims to change that.
I exclude the forming of electrolytics, for which there is more-than-ample evidence.
There's not much question that parameters change during burn-in regardless of capacitor type. "Burn-in" can range from just sitting on the shelf to high power square wave operation. If you don't see changes, you just don't have sensitive enough measurement capability. The real question is whether these changes are in any way audible and I can't comment on that. The changes are often mechanical in nature and Teflon is a mechanically unstable material. It wouldn't surprise me if the forces produced by high fields result in some slight dimensional change that results in some slight electrical change. Something I find more interesting is the question of whether any of these changes are stable. Do you have to re-burn-in your caps if you don't use the system for a while. What about temperature changes? Most parameters will change with temperature, probably more so than with burn-in. Is there any hysterisis when changes occur? Hint- there's always hysterisis unless you're using vacuum capacitors and those would be rather large in any reasonable value. 
Conrad, did you see the field numbers and signal sizes tossed around in the Teflon thread? Is there any evidence of measurable changes for the sort of caps used in audio at applied voltage levels within the caps' ratings? Again, I exclude electrolytics- they work in a fundamentally different way than nonpolar dielectrics.
And I would exclude the special case of paper caps that are not hermetically sealed. Temperature and humidity changes will move their characteristics all over the place. The cult surrounding them is puzzling.
And I would exclude the special case of paper caps that are not hermetically sealed. Temperature and humidity changes will move their characteristics all over the place. The cult surrounding them is puzzling.
Were you including those molded in beeswax in your paper cap set? I can confirm the now archetypal story of a characteristic change in sound, when beeswax was used in cheap paper layer SE OPT's for Admiral TV's. Urine salts from a seriously inebriated Hispanic supervisor, applied directly to the hot wax tank, two hours after eating the local (Elmwood Park Bar and Grill) hot pastrami sandwich and drinking Old Milwaukee beer, were the key to winning and holding the Admiral business, ever so long ago.
The man was fired for politically incorrect attempts at "encounters" and then rehired, to provide his unique chemistry, on a part time basis. I was there.
Bud
application of polymers
Spin coating works wonders in the electronics industry... might give that a try...
John L.
Spin coating works wonders in the electronics industry... might give that a try...
John L.
For shame. That was the drink of choice for poor college dormers. Makes for a horrible next day.
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