Home Propeller Head Plaza

Technical and scientific discussion of amps, cables and other topics.

[ Follow Ups ] Thread: [ Display  All  Email ] [ Propeller Head Plaza ]
[ Alert Moderator ]

Hi Peter

Peter: ""To suggest that RLC measurements are ALL that defines a cable's quality is also clearly wrong, since there is no established correlation between those measurements and the cable's ultimate purpose, even if you include the complexity of source and load interaction.""

I disagree. The lack of established correlation between those measurements and audibility does not mean the measurements cannot be used to ultimately define the cable and it's merit within the application...(whew, that was a mouthful).

So it is not clearly wrong to establish a metric based on those qualities..the issue I would take with the metric is, from what I read of your post, exactly the same issue YOU take with it..the weights assigned each parameter is for the most part, arbitrary, and there is certainly no correlation between the performance numbers shown and the "anecdotal accounts of audibility" (for lack of a good phrase to state what I mean).

Peter: ""Which means, IMO, that determining the relative quality of a group of cables based on RLC measurements alone is a pointless exercise, beyond the basic housekeeping measurements described above.""

I disagree with you..

It is absolutely necessary to define a metric for relative quality..and I fully support the designing of one, which is what Gene et al (I have never met et al, but I hear he gets around a lot) have done.

I do not believe it is accurate in it's results, as the weights are not based on anything other than initial guesses and gut feelings based on current experience...but it is a start..

A tale: bout 20 years ago, I was busy being a "process and design" engineer. I was designing and building hermetic surface mount 150 amp schottky power packages and encapsulated modules for military use. I'd meet with da big boss every week, and we'd go over everything I worked on..

He would always beat me over the head (perhaps that explains a lot now) about procedures...procedures, procedures, procedures...

Finally, one day I told him: Why in the name of sam hill do you want a procedure written for a process that fails to do what we want???It makes no sense...

His response: It's a start..it may be incorrect, but it is a start..a basis for building on..

I see the metrics as that start..

My gut tends toward low resistance and impedance at or below load...but nothing solid to base that feeling on..

Missed ya, dude...vacation?

Cheers, John


This post is made possible by the generous support of people like you and our sponsors:
  Atma-Sphere Music Systems, Inc.  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]