Apparently, the X-FDBK identifies the precise frequencies that cause feedback and simply cuts them, shortening the setup time of monitors and PA speakers. This plugin improves the “ringing out” process and shortens it to a matter of seconds. It identifies the feedback frequencies quickly and precisely and cuts them with a narrow notch, preserving the fidelity of the wedge or PA and enabling you to maximize the gain without getting feedback.
All you need to do is turn up the levels on your wedges and PA until they start to give feedback. Then activate the plugin and wait a few seconds until you hear the feedback disappear. The plugin’s graphic frequency spectrum shows you all feedback frequencies and the degree to which they were cut, letting you tweak them manually if you wish.