If you have one our cab packs (say Cab Pack 14) try this:
Set the Cabinet block to Stereo UltraRes (or just Stereo).
Choose an R121 IR for the left.
Choose an SM57 IR for the right.
Set the right delay to 0.110 ms.
It probably works with ML IRs too but I haven't tried it yet.
The math says that this puts a notch at f = 1 / (2 * tau) = 1 / (0.22 ms) = 4545 Hz but I don't hear a notch just a marked increase in clarity.
Set the Cabinet block to Stereo UltraRes (or just Stereo).
Choose an R121 IR for the left.
Choose an SM57 IR for the right.
Set the right delay to 0.110 ms.
It probably works with ML IRs too but I haven't tried it yet.
The math says that this puts a notch at f = 1 / (2 * tau) = 1 / (0.22 ms) = 4545 Hz but I don't hear a notch just a marked increase in clarity.