You know very well we are talking about electronics here......of course, certain measurements of speakers are very important.
That isn't what your statement said. You said:
What is so funny is that these "science is truth" people have no truth. There are no double blind linstening tests that confirm one measurement is better than another.
Saying that this applies only to amps and preamps after saying something like that is changing the argument- the first statement remains false.
That old junker maxes out at -80dB THD+N. Useless for modern audio gear engineering. Especially for class D design work. No wonder you didn’t know Johnson noise existed.
To be clear, the conclusion isn't supported by the opening statement. You don't know anything about me; the conclusion is not only unsupported but also false. And I made my statement in the context of crossover components in a loudspeaker. I would be really interested if you could show that they make even a 10th of a dB difference to the noise floor. In practice that seems difficult at best since you'd need an anechoic chamber to prove it. Regarding the analyzer, its proven itself very useful during the class D project as have differential probes, smart tweezers and a decent thermal camera plus a fair amount of simulation.
With my analyzer cheap dummy loads have a -92dB noise floor.
Lol! This statement suggests that your analyzer isn't being run properly or its broken.