>>105966046
When you place flat speakers in a real room when you measure them they'll have a downward tilt and subbass boost. The shape depends on the reflectivity of the walls, the size of the room, the distance of the speakers from the walls, the distance of the speakers from you, the off-axis response of the speakers, etc. In theory you should notice that overall curve and fix all major deviations from that curve, in practice there are still different preferences of bass and treble.