I have to agree! I didn't compare a fairly large amount of capsules for valid statistics. Just a few no name speciments. Indeed, I found that the small 6mm were bettter. Still, not flat response, but it was roughly estimated. The graph in post #33 was found on the internet together with a few other -not many different. Then I made the simple thought that there should be a few manufacturers -how many are there?- each one producing capsules with more or less characteristic and predictable paramaters, just like the WM61 had its own consistent behaviour.
It's true that what I did does not qualify for critical +/-1dB measurements, let alone phase deviations. I only posted it for inspiration. Perhaps, more knowledgeable people could take it a bit further.
It's true that what I did does not qualify for critical +/-1dB measurements, let alone phase deviations. I only posted it for inspiration. Perhaps, more knowledgeable people could take it a bit further.