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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: OK I am now Logged in lets discuss posted by Nightfly! on March 12, 2003 at 20:17:46:
""Hopefully Mr. Risch wont censor posts in this forum.""He won't..DBT's are allowed here, and I'm told he is not the moderator..And, at first glance, while it may suit his agenda, he is following the rules of the forum we all abide by..
""I'd like to know when Jon or any other so called audiophile""
is going to provide any technical backing to their claims of diode rectification and skin effect on speaker cables. Lets see the data. Thanks.""
They are not "so called audiophiles". They are..To varying degrees.
""is going to provide any technical backing to their claims of diode rectification and skin effect on speaker cables. Lets see the data. Thanks.""
They cannot....first, skin.
The effect is a function of current slew rate, and therefore, happens with fast changing signals...The current SOTA for load resistors does not allow the accurate measurement of any effect that could occur as a result..present loads are ridiculously inaccurate, and not up to the task. And, I've not seen anybody attack the problem of measuring it in any useful way..The standard skin equations, freq vs. reactance, are woefully inadequate.IMHO
The standards I would hold anyone to are beyond that which have been demonstrated... I have the easy position..That of shooting down anyone's measurement proof, as they will not be accurate enough or specific enough to meet my criteria...Look at Hawksford...I've essentially shot down his test setup and results because of setup inacuraccies and method shortcomings, but have not yet provided absolute proof that he erred..because it is not as easy as asking for "proof".
I have also failed to meet my criteria so far...All the test setup errors I've encountered will swamp the effect I am looking for..I work to eliminate them.
For diode rectification from strand jumping??
Skin effect absolutely requires radial conduction, which, within stranded wire, means interstrand conduction..and given the contact resistance, who knows...But it still requires test setup rigors that haven't existed before..And once established, may not prove to be real anyway..
Modulation of transport current profile is so far not possible to model, very difficult to provide equations for, and is even conceptually difficult for me to understand, and I'm the one who thought it up..does it exist? Don't know, but many error mechanisms stand in the way..
I admit to having difficulty with the "ridiculous" garbage that is occasionally spewed here...But also realize the very difficult path of providing hard measurement evidence...As the people I would ask the evidence of are not as capable as I am of actually testing for it, and I presently do not know how to test for it accurately..
The same applies to the electron collision/grain boundary thing I faulted Jon for...Yes, I provide theories from the best physics experts on the planet, in direct contradiction with what he spouts...But, I can provide about as much test evidence shooting it down as he can supporting it..He has no experts that can substantiate his suppositions, I have no test evidence to shoot him down...Yet..
I would concur that your posts are designed to stir things up...And I like that..Don't stop...Prop would appear to be the best forum for you to do so.
I wonder about the format and discipline of the forum, though.
If the personalities are totally removed, and the site become one of dry, technical dialogue...I would probably not stay...I get enough of that at work..
Cheers, John
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Follow Ups
- They will NOT provide date on the effects you ask... - John Escallier 18:44:15 03/15/03 (0)
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