The conclusion I've reached about speakers

And then???

https://www.youtube.com/watch?v=oqwzuiSy9y0

This iconic clip would seem to sum you up (toadally).

DeKay

Perhaps a hearing test might be worthwhile....

It would not I'm afraid. Ever heard of a fellow by the name of Beethoven? He had bad hearing but it didnt stop him being a great musician. Conversely, having perfect 20-20khz hearing doesnt make you a brilliant audiophile. You could still be tone deaf.

You have to remember that the same audiophiles that think they hear a difference in speakers are the same people that think they hear differences in cables. Audiophiles have very poor credentials when it comes to judging sound quality.  

Why not to admit that your hearing apparatus is inferior.  If you cannot hear any difference - just say it.  Instead you go into denial claiming nobody can hear it.  Very sad and reflect poorly on your personality.  After many toxic posts like that I surprised that administrators allow you to post anything !  Are you that pathetic that you need attention daily, posting nonsense?  Shut up, man !!!

I hope he understands the meaning of the word, conclusion, as he used it in his title, and spare us any more.

Why not to admit that your hearing apparatus is inferior.

Because I dont believe it. That is the opposite conclusion I have come to. The conclusion I have come to as Ive already stated is that any differences heard can be one of two things. Either it is imaginary or the difference is contrived. The frequency response graphs often show these obvious differences between different speakers. Are you trying to tell me these cannot be heard? If so, who is deaf, me or you? 
Imaginary differences are certainly plausible. Why do you think they spare no expense in achieving such beautiful looking speakers? It is because THEY know that WE will fall for it.

 If you cannot hear any difference - just say it. Instead you go into denial claiming nobody can hear it.

I didnt say nobody can hear differences. I am saying that it can be due to imagination or due to contrivances. There are many tricks at the disposal of speaker engineers in order to make us believe that we are hearing better sound. If that subsequently enables them to sell more speakers they will do it. The differences people claim to hear also need to be considered in the context of differences in peoples hearing loss, poor listening environments, room treatments, listening position and so on.