BJF-66 Benson Jazz setting?

Hi, question about the brilliant S-66. On Fender amps without a mid control, jazz cats like George Benson and Grant Green would turn down bass and treble to 1 or zero, in effect creating a flat eq setting. Since S-66 manual describes mid control to be different than old amps, and increasing mid reduces treble and bass, what is the setting to emulate above mentioned flat jazz tone?