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 ]

Not all cables show high order harmonics at JC's

I don't want to quote the whole previous post (most of it is fairly clear anyway and I have no argument with it) but there is one thing to clarify:

So unless I missed something, John has never mentioned any cable which he has measured which has shown NO high order harmonics.

In the tests I watched at John's, some cables exhibited very low/no high order harmonics. I think one of the JPS cables, in particular, showed almost nothing on the scope, other than the low order residuals from the oscillator.

The results are also completely repeatable, in that you can swap cables in and out and get the same signature.

To me the discussion boils down to this:

There is clearly some interaction between the test rig and the cables at JC's. Either (as jneutron suggested months ago) something about each cable is causing the test equipment to generate different harmonics, or the cables themselves are generating them. It's not John's imagination, nor is it sloppy test methodology.

The repeatability eliminates the possibility that it is random or environmental noise, or measurement error.

BTW:

You said :We don't need a plausible explanation of John's results.. We do. If we simply pick and choose which data sets we use, and throw out the ones we don't like, then this is religion not science. If we can collectively reconcile Bruno and JC's results with a single explanation, then we have moved the SOTA forward.

Peter

This post is made possible by the generous support of people like you and our sponsors:
  Sonic Craft  

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 ]