What do you think of this?:
https://audioxpress.com/article/non-linear-amplitude-modulation-of-loudspeakers
"Consequences for Listening
The significant relationship by a factor of approximately 10000 of the membrane travel amplitudes between recording and play back leads to a non-linearity, generating inter alia harmonic and intermodulation distortions. At deep notes and high SPL these distortions can easily dominate the distortions generated by a good loudspeaker chassis at relatively small listening distances. This may, for example, be the case for monitor rooms. Consequently, one must not go below a minimum listening distance (e.g., 3m) to achieve a fairly undistorted sound experience."
I have a very good setup at workplace (nearfield Neumann Kh-80 + Arendal 1723 1S sub; Dirac Live Bass Control; the room is very spacious and also very well damped acoustically). My home speakers are certainly not as neutral (BC Acoustique Gange + BK XLS300 sub below 50hz), but they sound subjectively "cleaner/purer" at 3.5 meters distance (without any digital room correction!). The workplace sound is certainly more neutral, but at home everything is more relaxed and less grainy...
https://audioxpress.com/article/non-linear-amplitude-modulation-of-loudspeakers
"Consequences for Listening
The significant relationship by a factor of approximately 10000 of the membrane travel amplitudes between recording and play back leads to a non-linearity, generating inter alia harmonic and intermodulation distortions. At deep notes and high SPL these distortions can easily dominate the distortions generated by a good loudspeaker chassis at relatively small listening distances. This may, for example, be the case for monitor rooms. Consequently, one must not go below a minimum listening distance (e.g., 3m) to achieve a fairly undistorted sound experience."
I have a very good setup at workplace (nearfield Neumann Kh-80 + Arendal 1723 1S sub; Dirac Live Bass Control; the room is very spacious and also very well damped acoustically). My home speakers are certainly not as neutral (BC Acoustique Gange + BK XLS300 sub below 50hz), but they sound subjectively "cleaner/purer" at 3.5 meters distance (without any digital room correction!). The workplace sound is certainly more neutral, but at home everything is more relaxed and less grainy...