How far should you bring down an EQ filter at a feedback frequency?

Bringing down an EQ filter at a feedback frequency as little as needed to stop the feedback is important for maintaining audio quality and maximizing sound output. Feedback occurs when a sound loop is created, often leading to a high-pitched squeal or other undesirable noise. By only cutting the necessary amount at the specific frequency where feedback occurs, you preserve as much of the original sound as possible, ensuring that other frequencies remain clear and unaffected.

If you cut too much, it can lead to a significant alteration in the overall sound quality and tonal balance of the audio. Therefore, the approach is to pinpoint the feedback frequency and adjust only that part, which helps keep the overall mix intact and allows for better clarity and volume without sacrificing quality. This approach enables the audio engineer to effectively manage feedback while still delivering a robust sound.