How can I set the 'Air absorption' properly?

Hello. I’ve been struggling for setting air absorption of the sound attenuation.

I don’t know why MinRange doesn’t work If I set this over 0. (like -300, -value works but 10 or 3000 is X)
I’ve known min-MAX range is the distance between where the actual air absorption start-ends.
LPF HPF min-MAX works ok. But can anyone tell me if i knew wrong.

Thank you.