Which low frequency filter should I use on the KSM32?

Date Updated: August 23, 2017 FAQ #116
The KSM32 has a 3-position filter: flat, rolloff, and cutoff. How are they different and how do I choose the proper setting?

The KSM32 has a three-position, high-pass, filter switch that operates independent of the 15dB-attenuation switch: Flat, Cutoff, and Rolloff. In Cutoff mode the switch engages an 18dB/oct. filter at 80Hz (to reduce room noise). In Rolloff mode, the switch engages a 6dB/oct. filter at 115Hz (to limit proximity effect).