4 Ways to Fix Vocal Mic Feedback With a Loud Acoustic Guitar

Move the mic closer to your mouth Singing softly often makes you lean back, which forces the sound engineer to turn you up and causes feedback. Keep the mic about an inch from your lips.

Point the guitar soundhole away from the mic The mic picks up the guitar’s soundhole more easily than your quiet voice. Angle the guitar so its soundhole faces away from the mic capsule.

Use a cardioid dynamic mic instead of a condenser A large condenser mic picks up too much side noise from the guitar. Switch to a cardioid dynamic mic like an SM58, which rejects off-axis sound much better.

Cut low-mids on the vocal channel Frequencies around 200-400 Hz are where acoustic guitars rumble and excite feedback. Also reposition any monitor so it does not face the guitar body.