Rather say the ability to critize which is more important to my eyes, and not simply accept what is written, whatever the autority of the writer
Your problem is not science. Rather, your problem is that your own claims and arguments lack any basic logical consistency. For example:
1. Here you say you do not want to "simply accept what is written, whatever the authority of the writer." But you have not been talking about the authority of the writer - you have been talking about science. And the entire point of scientific measurements is that the authority of the writer is irrelevant. Klippel measurement, like any scientific measurement, is not scientific simply because it's based on technology or it's a "system." It's scientific because it's
repeatable - anyone with a Klippel and basic knowledge of how to operate it can measure these speakers and the result will be somewhere between very similar and identical. So if you don't want to just take
@amirm 's word for it, the reasonable response to that is not simply to stick your fingers in your ears (so to speak) and say "I refuse to believe it," but rather to check out another review that also uses Klippel/spinorama measurements (or a similarly reliable measurement technique) and see whether Amir's measurements here are confirmed or contradicted.
2. If you suspect that this speaker will sound better/"right" at about 20 degrees off-axis, then you can just look at the spinorama graph's 20-degree off-axis frequency response line, which is clearly shown in the review and reproduced in
@sarumbear 's comment above. That response line looks quite poor also, which gives no confidence that the speaker will sound any better 20 degrees off-axis. Also, keep in mind that if you listen 20 degrees off-axis, then 20 degrees off axis of
that new listening orientation will be equivalent to: (a) 0 degrees and (b) 40 degrees. Well, the 0-degree response is also already in Amir's graph - it's of course the on-axis response. And it's poor. So the only missing response line is the 40 degree off-axis line, and even for that we have the 30-degree off-axis response line, which shows response very similar in its basic character to all the others. So the odds that the speaker's 40 degree off-axis measurement would somehow be radically different than the 0, 10, 20, and 30 degree measurements - and that it would have the
opposite peaks and dips that could meaningfully start to mitigate the response problems of this speaker, are very slim odds to say the least.
So you are not exercising your ability to criticize. You're simply ignoring facts and refusing to believe anything that doesn't suit your preferences.