Alan Sircom
I dü werds, me
I agree. A dome tweeter with readily identifiable distortions that sit above levels identified by many well conducted studies as being audible is a different matter entirely to the differences between many (though not all*) capacitors which are orders of magnitude lower.
There are also many equally well-conducted studies that show those 'readily identifiable distortions' are well below the threshold of what we can perceive. Davis and Foster (1978) was effectively the 'move on' moment for the audio engineer when it was shown that significant differences in drive unit performance and even cabinet coloration could be effectively dialled out by EQ.
The problem is the assumption that because one branch of audio is less than perfect and therefore benefits from a subjectively based trial and error process, that all other areas deserve the same treatment.
This is special pleading. The trial and error process (which magically only appeared in your discussions today; prior to today it seemed to be just a numbers game) is not predicated on any objective requirement unique to loudspeakers. From a purely objective standing, we are all loopy audiophool nut-jobs for thinking there's a difference between a pair of good loudspeakers and a cheap soundbar, and daring to deploy some trial and error listening tests to justify that position.
If you've solved it, bag it and move onto the next problem because there are plenty of areas that would benefit.
Which is why there isn't much of what you or I might call 'audio' going on at the Audio Engineering Society these days. The loudspeaker is a fully resolved problem, just like everything else in the signal chain we use. The solution to that problem is achievable without the need for trial and error and the trial and error process is simply audiophool OCD, inventing solutions for problems that do not exist. It's why I likened the difference in capacitors (a relatively uncontentious piece of 'foo' for the objectivists in the room) to the difference in tweeters (which is claimed to make a difference by the same, but even that difference is contentious by those who take a more rigid view of objectivity in audio).