[Elecraft] Elecraft] RFI on K3s

[Walter Underwood]

But thanks to the skin effect, silver plated power cables should conduct RFI energy BETTER than regular copper cables.

I wasn’t going to respond again, but I’m weak. Eric should be invoking the “damping factor” on this thread soon.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 21, 2016, at 4:18 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> On Tue,6/21/2016 3:05 PM, riese-k3djc at juno.com wrote:
>> its silver plated
> 
> Which, contrary to the hype from ripoff artists in the high futility world will try to tell you, offers NO performance benefit over POC (plain, ordinary copper) in even the most esoteric of audio systems.
> 
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now emeritus) who was at Univ of Wis at Madison showing conclusively that exotic loudspeaker cables are a complete waste of money, and the only thing that matters for real world loudspeakers is low DC resistance. In other words, short, fat copper.  The thing it affects is "damping factor" -- that is, the ability of the very low Z output stage to damp a floppy woofer. Damping factor is, by definition, the Z of the loudspeaker divided by the sum of the output Z of the amplifier plus the resistance of the cable, and it's low frequencies we're talking about, so it's DCR.
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now emeritus) who was at Univ of Wis at Madison showing conclusively that exotic loudspeaker cables are a complete waste of money, and the only thing that matters for real world loudspeakers is low DC resistance. In other words, short, fat copper.  The thing it affects is "damping factor" -- that is, the ability of the very low Z output stage to damp a floppy woofer. Damping factor is, by definition, the Z of the loudspeaker divided by the sum of the output Z of the amplifier plus the resistance of the cable, and it's low frequencies we're talking about, so it's DCR.
> 
> There's a classic AES Paper from the '70s by E.E. Prof R. A. Greiner (now emeritus) who was at Univ of Wis at Madison showing conclusively that exotic loudspeaker cables are a complete waste of money, and the only thing that matters for real world loudspeakers is low DC resistance. In other words, short, fat copper.
> 
> The thing it affects is "damping factor" -- that is, the ability of the very low Z output stage to damp a floppy woofer. Damping factor is, by definition, the Z of the loudspeaker divided by the sum of the output Z of the amplifier plus the resistance of the cable, and it's low frequencies we're talking about, so it's DCR.
> 
> The laws of physics have not changed since the '70s. :)
> 
> 73, Jim K9YC
> 
> 
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