Please Read and express your feelings and opinions....

I'm finding this sound stage aspect rather interesting as you can certainly measure the recording intended output and could potentially create based average pair of microphone pickup with acoustical guides that emulate our hearing structure and use software to map the effect. But you also have an interesting decision if to either allow or cancel the room effect. Since we never listen to any speaker without the room and every speakers patterns will have notable impact on effective room response and impact to soundstage, it would only provide an idea of what the potential is and not quite how it will integrate to your room.

Some spend a bit time in placement to achieve this effect and a speakers measured pattern might work well in a room while another will fail, not entirely due its inherent ability of each but on how well it integrates to the space. Its also often a  balancing act as more than a singular factor plays a role in choice.

In ending, we could develop a measurement system that give us a chart in free space, but no speaker is really ever applied in that manner. Its certainly scientifically interesting, but the best use is really as a guide on how to best setup more than anything else. I've used a calibrated microphone and various tools as an aid, but I can tell you from moving homes and setting up all over again, every room brings its own set of unique challenges.

@david_ten 

I've been pondering the "...and Walla conflict." text and your response to it for the last four days and couldn't make heads or tails out of either or get it out of my head, for some reason. But we might have a breakthrough.

Is it possible that what was intended should have read "and, voila, conflict."? If this is, indeed, the case and you picked it up that quickly then my hat's off to you.

BTW, I'm on the northshore. Ever considered attending any BBAT meetings?

kosst_amojan"Why do I need to do the research myself to prove whats already well understood technology deplyed throughout the recording and reproduction industry?"

Of course there is no reason that you are obligated in any way to conduct such research but prior to you becoming indignant that any one should challenge you on this stated position you should accept that no one else is obligated to perform any such research either and if THEY are challenged by the faith based religious naysayers to conduct they're own test then it is only fair for them to request the same of you it is insufficient to simply proclaim as you have here that it is "already well understood" because if that was true they'res no way to explain the result so many have achieved other than to say 1000's of people are delusional which is patently absurd on the face of the claim.

Buying audio products and listening to music is not about scientific measurements, although it can help in selecting and matching components together.... It is, for me, to capture to the best that I can, what is on the recording, to " my " liking. It is as simple as that. The addition of cables, fuses, isolation devices, a new amplifier, whatever, it is about me, and only me. And I listen. Other than measuring room acoustics, which I find is necessary for me to achieve my end goal, I am open to anything, and I use my ears. Thankfully, my ears still work.