This is an eq made with Graphic eq.
When you play with your humbucker, this eq try to transform your mic into a single coil.
It remains approximative but it can be useful if you are not too purist.
Use Graphic Equalizer stomp.
Naturally, you have to place the stomp before the stack section (ideally in the "A" stomp).
I created this eq with a bridge humbucker and with a combination neck/bridge.
80 Hz : 8.5 dB
160 Hz : -9.1 dB
320 Hz : -12 dB
640 Hz : -3.4 dB
1250 Hz : -2.6 dB
2500 Hz : -1.8 dB
5000 Hz : 10 dB
10000 Hz : 12 dB
Low cut : 210.5 Hz
High cut : 33488.1 Hz
Volume : -1.5 dB
Mix : 100%
Ducking : 0
If you have a better setting then post it.