Why feedback happens
Feedback is a loop. A microphone hears the speaker, the speaker plays the microphone, and the sound goes around and around, getting louder each time until it rings. It happens at the frequencies where the room and the system reinforce each other most.
It gets worse when the microphone is far from the mouth (so it has to be turned up), when a speaker points back at the microphone, when the room is hard and reflective, and when someone walks in front of the main speakers with a wireless mic.
Older systems often have very little room between “loud enough” and “feeding back.” Volunteers learn to keep it quiet, and then the back pews cannot hear.
What fixes it
What actually helps
The right microphone for each person
A headset or well-placed lapel mic for a pastor who walks; a directional pulpit mic for one who stays; choir mics voiced for the choir. A microphone close to the mouth needs far less gain.
Speakers placed so they do not feed the microphones
Main speakers are positioned and aimed so the platform sits outside their coverage, and monitors are chosen so they do not point straight into a live microphone.
Gain structure and tuning
The system is set up so each microphone has headroom, then tuned with measurements so the frequencies most likely to ring are tamed before the service, not during it.
Acoustic treatment
Treating the surfaces that reflect most strongly back toward the platform increases how loud the system can go before it rings.
Related services: Church sound system installation · Church acoustic treatment
What you can try this Sunday
These do not replace a proper fix, but they often calm things down while you plan one.
- 1
Move the microphone closer
Ask speakers to stay a hand’s width from the pulpit mic, or switch to a headset, so the mic can be turned down.
- 2
Walk the platform
Have someone walk the stage with a live wireless mic before the service and mark the spots where it rings. Ask speakers to avoid them.
- 3
Mute what is not in use
Every open microphone adds to the loop. Mute choir and instrument mics when they are not being used.
- 4
Write down when it happens
Note which microphone, where the person was standing, and what was happening. That record makes the real fix much faster.
Why it matters
How it serves your mission
Feedback breaks the moment. A squeal during prayer or an altar call pulls every person in the room out of what God is doing and onto the sound booth.
It also wears on the volunteers who run sound. Fixing it lets them serve with confidence instead of dread.
Real projects
Churches that faced something similar
From the project record of an experienced church audio, video, and lighting team that has served congregations across Georgia and the Southeast. Each one names where it is.
Thomaston, GA
Mountain View Baptist
Main sanctuary modernization with two new LED walls, production lighting upgraded to LED, and targeted acoustic treatment to improve clarity and gain before feedback.
- Two new LED walls in the main sanctuary
- Production lighting upgraded to LED with refreshed looks
- Acoustic treatment for speech and music intelligibility
Sandy Springs, GA
St. Jude the Apostle
Broadcast clarity for a reverberant space: consistent lav and lectern capture with tasteful noise reduction.
- Lav pairing and gain staging
- Noise management
- Speech-first tuning
Newnan, GA
Unity Baptist
Rebuilt after a tornado with a full audio, video, lighting, and broadcast overhaul, built to be volunteer-friendly on Sundays and ready for visiting artists.
- Volunteer-first workflows: presets, labels, and simplified operation
- Rider-ready stage I/O, power, and patching for visiting bands
- Broadcast chain for live stream and on-demand capture
- Room tuning and gain structure for clarity and headroom
“[This team] has been our go-to team for sound, lighting, and projection. From fixing problems another company left behind to guiding us through a full new building install, they’ve always gone above and beyond—training our team, answering calls even on Sundays, and standing by their work. Great company, great values, great guys!”