Keith, that's a reason why I really like my Fender TBP-1 and wish that Alembic would update the F-1X. The Fender has a variation on the enhance knob that seems to be a sliding filter for adjustment to the room. It also has a nifty notch filter that will let you cut or boost a selected mid frequency by a variable amount. The width of the cut/boost is preset, so it doesn't quite approach an SF-2 in band pass mode, but I find it to be helpful enough and a set-once kind of thing that I don't tweak for the room. The flat tone isn't quite as present as the F-1X and I'm sure Alembic could do it better, but it does what I need for live work. Even though the Alembic sounds better flat, the Fender gets the nod in my rig for better control features in a live setting.
In any case, if you're looking for a tone with midrange as the prominent band, the F-1X isn't really the most flexible choice. The flat setting is somewhere between two and three on the bass and treble knobs with the mids pegged at ten. You can't add mids, you can only take away bass and/or treble. Since the thing puts out virtually no sound at all with the three EQ knobs zeroed, you'll have a very touchy little bit of knob travel to find what you're looking for. Try it, though, the tone is very pure and may be exactly what you're looking for.
-bob