heyho,
here a EQ setting that mimics what happens when you increase the distance between the mic and the speaker.
it's an idealized version, of course, but I found it helpful on quite a few rigs.
Studio EQ
post Stack
the main ingredient is the cut at around 4k:
Mid2 Gain -6,4 dB
Mid2 Freq 3974.8 Hz
Mid2 Q 1.740
I also boost the low end:
Mid1 Gain +6 dB
Mid1 Freq 100.4 Hz
Mid1 Q 1.440
start with mix at 0%, turn it up to 100% to hear what it does, then find your sweetspot, I often land at around 50%