drockfresh,
I have used a vintage cx-3 through a leslie (now a vent) for years...and for years I have tried to upgrade to a modern clone. Each time I try, our front of house engineer tells me the same thing, not enough bass. I even had Jim Alfredson almost drive out mid tour to tweak a loaner xk-3c and it did not pass. (I cancelled having Jim come out once the stock xk3c demo did not pass...) I just returned a mojo 61 for this very reason. All the new clones rock and sound vastly more B3ish than a korg cx-3, but you may have trouble trying to match the bass that a vintage korg puts out...let me know if you have any luck.
Will be bringing a hammond xk5 to our pre-production rehearsal next week, will let you know if I am finally able to stop playing the korg. Lol. Great forum btw, love the passion!
