And the point being?
Would a person sit higher or lower then with the M80s to remove this artifact?
What different responses would occur at those positions?
The measurements are taken at a standard position and THAT position is where the comparison would be drawn either with ears or with a mic measuring sound.
I'm sure we could see other changes in the spectrum if a person at ear level (or the mic position) were sitting near the floor or raised 1m above either speaker.
Off axis measurements left and right at the same height are proof of the concept.
The fact is that measuring the response at the same mic height as one would measure for the M60 or perhaps any other tower shows a wobble below the 200Hz mark for the M80 perceivable by a mic and expected to be perceived by human ears.
