Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Roll-off filter on Sennheiser mic › The flat line is the setti
The flat line is the setting to disengage the roll-off circuitry. This means the output of the mic will be flat and unaltered.
The sloped line is to turn the roll-off circuitry on and will alter the sound by reducing the low frequencies.
I would suggest to leave it switched to the “flat” setting unless you specifically need the reduced bass response (I.E. for wind).