Monitors Bass roll off, bass tilt, treble tilt

Anyone know about this?

Monitors are both standing up right, ear level but pushed up again the wall (i have no other choice)
Left monitor is also in a corner.

I’ve gone for Desktop control on for both, Bass tilt -4db for both and Bass roll off -4db for the left.
That seem right?
What about treble tilt?

Nice speakers.

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