How to stop church sound feedback

Audio · troubleshooting

Feedback — that sudden squeal or howl — happens when sound from a speaker gets back into a microphone and loops around, growing louder each pass. The good news: it's predictable, and a handful of habits will stop it before it starts.

Fix placement first

Keep mics behind the main speakers — a mic in front of a speaker is asking for trouble.
Mind the monitors — floor wedges pointed at a mic are a common culprit; angle them off-axis.
Closer is better — a mic close to the mouth needs less gain, which means less chance of feedback.

Use directional mics

Cardioid and supercardioid mics reject sound from behind, so they pick up the voice and ignore the speakers. Point the rejection (the back or side of the mic) toward your loudest monitors.

Manage gain

Most feedback is simply too much level somewhere. Turn up only as much as you need, mute channels that aren't in use, and use a high-pass filter to cut low rumble you don't need amplified.

Ring out the room with EQ

Every room has frequencies that feed back first. Before the service, slowly raise the system level until it just begins to ring, then pull that exact frequency down a little with EQ. Repeat for the next one or two. This "ringing out" earns you meaningful extra headroom before feedback returns.

Quick feedback checklist

Mics behind the speakers, close to the source.
Directional mics, aimed away from monitors.
Gain no higher than needed; unused channels muted.
High-pass filter on voice channels.
Room rung out with EQ before people arrive.

Cleaner, feedback-free sound helps everyone — the congregation, your live stream, and any automatic verse detection listening to the preacher.

Clean audio in, automatic verses out — free.

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