Over many years I have red experts advises and my conclusion is that there are many theoretical solutions but most of them are impossible to implement due limitations of the room.
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Funny, I've come to sort of the opposite conclusion. People seem to see only one place to put their speakers (usually based on their preconceived idea of where they "fit" physically or visually), or see the limations of their room, layout, etc. as insurmountable. But if you keep thinking about it, you can come up with a good solution for a lot of the issues.
The key IMO is to *start* with figuring out where they should be, then seeing how close you can get to that while avoiding issues.
It's also worth setting them up temporarily where they should be, so you know what the potential of the speakers can be. I read so many posts by chuckleheads who are convinced the problem is with their speakers (and that they know that they are right, and all the other satisfied owners of that speaker are just wrong).
A lot of people start entirely the wrong way around, setting them up where they "fit" then being unhappy, blaming the speakers, and maybe moving things by inches.
It's a shame that people don't seem to spend a fraction of the time on speaker placement that they seem to spend on speaker selection. (Not to mention the time wasted on wire / cables, banana plugs, etc.)