"Loud levels" can be simply overdriving the room. Consider that the initial signals from the speakers are continually bouncing off walls, ceilings, etc, without sufficient opportunity to decay. This will destroy good 'imaging'.
You can help this some by deadening the room BUT then when you play music at normal levels it might sound a bit dead and uninvolving because you may have overdamped your room.
You've got good speakers - I doubt that they are a problem but it might be informative (to you) to have a SPL meter and test record and see exactly what your frequency response is. Knowing that might lead you to a solution, or not.
But, IMHO, if you want 'loud' and imaging you need a much larger room with better dimensions and very selective set up, including acoustic treatment of problem areas.
FWIW.
You can help this some by deadening the room BUT then when you play music at normal levels it might sound a bit dead and uninvolving because you may have overdamped your room.
You've got good speakers - I doubt that they are a problem but it might be informative (to you) to have a SPL meter and test record and see exactly what your frequency response is. Knowing that might lead you to a solution, or not.
But, IMHO, if you want 'loud' and imaging you need a much larger room with better dimensions and very selective set up, including acoustic treatment of problem areas.
FWIW.