General: Roll off below 60Hz using a High Pass Filter.”

Each channel on a mixer usually has an HPF (high pass filter) button.  By pressing this button, we are dropping all audio frequencies below a certain level.  As an example, I’ve got a Yamaha mixer with a “/80” button – which means HPF and drop all freq’s below 80 Hz.  Freq’s this low are typically your low bass notes and kick drum.  If any low frequencies seep into the vocal microphone, they can muddy up the sound.  So, it’s good to use a HPF on any channel that’s not dealing with low-end frequencies.  With experience, you might find some vocals sound better without the HPF but if you are new to sound, HPF is a good place to start.