Until you know exactly what the speakers are doing at 1 meter you can't begin to treat the room.
Were these measurement taken with 1 Titan at the listening position or at 1 meter? I'd guess from the mid/base horn plot that you are still measuring from the listening position, as even my "poor mans Edgarhorns" (original Edgar 80's) do a better job than that at 1 meter, with a peak at the 500 HZ x-over point but mostly flat from 80HZ to 16K.
Nobody here but us chickens.
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