Another way to get in the ballpark is to use the graphic eq in the amp block. Choose either of the 7 band eqs. Do a full cut of the
1st,3rd,5th and 7th bands and a full boost of 2,4 and 6. 2,4,and 6 are 200Hz, 800Hz and 3.2kHz. Tweak 200 and 3.2kHz to your liking.
I use an external footswitch on my FC6 to bypass the eq.
Vladimir, thanks for posting links to those IR's!