I am mainly using the Sennheiser MD421 for playing/recording saxophone into.
It has a 4 stage dial on the shank which reads S - - M.
'S' is for speech and rolls off the lows.
I remember handing it to some bloke to do a speech mid-way during a gig.
I was surprised to see him studiously roll the dial to 'S' before speaking (obviously a professional speaker methinks).

cheers, Mark.