Hi
Yes Mario I agree listener placement is important.
In the case of a stereo recording using a simple pair of stereo mics placed front centre at say 10 feet, then the listener should sit midway between speakers 10 ft apart at the apex of an equilateral triangle. There will also be a reasonable listen within an arc of about 30 deg just behind this and give an acceptable image.

This type of recording was favoured by Deutsche Gramophone! Recording great performances of classical music in the best audio quality has been Deutsche Gramophone’s mission ... like the recordings of Herbert von Karajan –
I most cases here a single pair of Telefunken Microphones c100 or c200 suspended above the conductors head angled at 45 degrees and pointing forward and down.
And you did indeed hear what he heard.
I was well into all this from the start as I was manager of a Hi Fi shop in London’s Tottenham court rd at the birth of stereo so I had to know my Records to sell stereo hi fi .
So I am still a bit of a purist about my stereo imaging.
Mike

BIAB2021 UltraPlus,AsusN55S1Tbssd, W10/64,Akai EIEpro
Yamaha CVP405,SquireStrat, CoolsoftVMidSynth
Novatation Impulse61 Ctr kbd, Cwalk blab Kontakt

http://mikesmusic.byethost16.com/