How should an EQ filter be adjusted when dealing with a feedback frequency?

When addressing feedback frequencies in audio production, using an EQ (equalization) filter is a critical technique. The recommended approach is to adjust the filter only enough to eliminate feedback. This means identifying the specific frequency that is causing the unwanted sound and then reducing that frequency just enough to stop the feedback while maintaining the overall tonal balance of the mix.

This method is effective because completely eliminating feedback by drastically cutting a frequency can lead to a hollow or unnatural sound. It may also disrupt other elements in the audio spectrum that rely on that particular frequency to sound complete. Conversely, merely slightly decreasing or turning up frequencies deemed necessary for clarity does not appropriately address the issue of feedback and can potentially exacerbate it or create clarity issues in other parts of the audio. Thus, targeting only the feedback frequency for reduction ensures that the mix remains intact while solving the immediate problem.