I am talking from point of view 'how to find a difference'.
I believe caps are more different than it was seen in the article.
But if he intentionally have chosen this setup with usual for studios opamps (some 'standart setup') - then ok. Then we clearly see that there is almost not difference between different el. caps.
So he proves that el. caps are almost the same in some conditions (large enough capacity). He is of cause not wrong here. It is a right result.
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It is an important result. It means that in the conditions that the capacitance is large enough for the purpose, distortion can be disregarded.
Exactly the same result Douglas Self came to with lots of measurements.
Jan
Exactly the same result Douglas Self came to with lots of measurements.
Jan
As Anatole France once remarked about an issue in French politics: Even if 50 million people believe a stupid thing, it still is a stupid thing ;-)
Jan
Jan
It is normal for all humans to believe some stupid things. They are less likely to do it in their field of expertise (if they have one), but they still do it in other areas.
It is also normal for humans to be far, far better at seeing other people's faults than at seeing their own faults. Humans are virtually blind to the latter. So, complain about others if you want, but probably wise not to feel to smug that you are better. That goes for all humans.
Cyril Bateman's test was much more interesting...
https://www.diyaudio.com/forums/parts/151392-electrolytic-capacitors-120.html#post5478553
https://www.diyaudio.com/forums/parts/151392-electrolytic-capacitors-120.html#post5478553
That made sense until revisiting figure 6, which shows no evidence of overload at any frequency at +20 dBu. Something about the test protocol?
I see you are a firm Believer from the Church of Run In / Burn In 🙂
Maybe 6 Moons or some other Audiophile Approved site cares to publish these results.
Not holding my breath though, they lack the required subjective hyperbolic poetic effusion needed. 🙄
and i find PRR's argument about cost justifications when thousands upon thousand caps were involved the sanest argument thus far....
