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A challenge to the "measurement" camp

I’ve watched some of his video and I actually agree on some of what he said,
but he seems too confident on his insistence on measurement. For those
who expound on the merits of blind test and measurement, why not turn
the table upside down?

Why not do a blind test of measurement? That is I will supply all the measurement
you want, can you tell me which is a better product?

For example, if I have a set of cable, and a set of measurement for each
individual cable, can you tell me which is the best cable based on measurement
alone? I will supply all the measurement you want.
After all, that is what you’re after right? Objective result and not subjective
listening test.

Fast forward to 8:15 mark where he keeps ranting about listening test
without measurement.  
https://www.youtube.com/watch?v=katmUM-Xelw

By the way, is he getting paid by Belden?  Because he keeps talking about it
and how well it measures.  I've had some BlueJean cables and they can easily
bettered by some decent cables.  
andy2

Showing 3 responses by b4icu

b4icu's avatar
b4icu
553 posts
 
What thickness is right?

Well, the only cable property that matters is it's resistance.
A cable resistance equals to the material conductivity constant (cooper),
multiplied by its length (in meters) and divided by its cross section (mm sq.).
This resistance shall fit so it will be way smaller than the Amp's DF. (Output resistance). 
Usually, the Amp and length required are a given. 
So what left to play with is the thickness.
Today SS good Amps have a DF of 200 and above...
PASS LAB = 200
EMOTIVA = 400
Luxman = 700
Tube Amp have a low DF (20 and less) so it's insignificant.
D-class tend to have a DF in the thousands: as high as 4000 and more.
Tell me what is your Amp's DF and what length you need, and I'll calculate for you the optimal thickness (in # awg).

A test been conducted two years ago, by myself, and those who pioneered it, ended up very happy. The old cable (no matter how expensive it was, and some were as high as $17,000 a pair, went into storage. The DIY offered ended up (mostly) under $100.-


b4icu's avatar
b4icu
553 posts
 
More than that: I can calculate what is the cable you need for a system, by having the required length and the DF figure of the Amp.
No measurements are required.
The idea that a cable is a mystery to physics is naive. it is a part of engineering and not a roulette game. Unfortunately, most makers and cable are those easy to make (12-14 AWG) and not the right once (4-00 AWG), harder to make. Your methode, can only tell out of N (number) of measured cabels, which is better. It won’t tell you what cable you really need. Is none of the measured cabels, is among the right calculated values, you trial is no good.
b4icu's avatar
b4icu
553 posts
 
Mr. speedbump6

I not only say so, I proved it also sounds so and it works.
Look at my thread How to select a good Speaker Cable
and see Mr. keppertup’s report of his experience with adding a #0 awg cable to the one he DIY in 2018, also following my advice, and judge. On the 2018 thread there were many who went his way and tried it out. All were very happy with results.

However, you may stick to your way of thinking and adopted some snake oil philosophy, that will cost you way more and not help at all.
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