How to EQ a Microphone

Step 1:
Turn the sound system and the microphone on.

Step 2:
Set the four band frequencies in the middle of their ranges, usually at 5 of a possible 10. Frequencies are usually labeled Low, Low-Mid, High-Mid and High.

Step 3:
Have the performer/speaker rehearse their performance. If singing, they should sing at performance volume. If delivering a speech, they should use the actual text they will be speaking. In a pinch, you can have someone else speak during the microphone EQ.

Step 4:
Push the total volume up past the level needed for the performance or speech.

Step 5:
Listen for feedback. When it occurs, identify the frequency range that is causing it, and adjust that frequency's knob down until the feedback disappears.

Step 6:
Improve the sound quality by boosting each frequency range independently until the performer's voice sounds as rich and as full as possible.

Step 7:
Take the volume back down to the performance level.

Step 8:
During the performance, you will need to continue to adjust the microphone's four frequencies up or down for tone, still avoiding feedback.