Fishman Pro-Eq User Manual page 7

Fighting Feedback
1. Start with the Phase switch in the left position and the Depth control at 5:00.
. Turn your amp or PA up so that it is on the verge of feedback.
. Flip the Phase switch back and forth until you find the position that sounds good and
doesn't feed back from open G and above (mid-bass feedback).
4. Turn up the amp some more until you get feedback around open D and below (deep-bass
feedback).
5. Move the Depth control counter-clockwise until deep bass feedback goes away. (usually
between 9:00 and 10:00).
Deep-bass Feedback
(Open D and Below)
Mid-bass Feedback
(Open G and Above)
7