You keep ordering things thinking it will fix this supposed loss of dynamics and you clearly are failing at getting results so why still waste money? @crossfreeee
How about do some practical work. Get a calibrated mic, this will do - UMIK-2 and download this - https://www.roomeqwizard.com/ and do some Room RTA checks from your seated position. So you know how the speaker and room are coupling. Unaddressed nulls can lead to loss in slam, tactility and sense of dynamics and you're not investigating that and just trying to buy your way to a solution.
This video Is a great guide - https://youtu.be/F-T_lZ3KJjU?si=0wxv841zRIchfrOd