- Acoustic Feedback and how to avoid it
- Acoustic feedback will occur when the microphone picks up audio from the loudspeaker and transmits it back into the amplifier. A "loop" of sound occurs which builds in intensity to a piercing scream.
- This is usually due to the volume being too high or the microphone too near to the equipment - and the scream won't stop until you physically break the loop of sound!
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- Avoiding / stopping Feedback
- Make sure the microphone is switched off before switching the system on.
- Ensure that the MICROPHONE (INPUT) VOLUME is turned down to its lowest position.
- Switch on the microphone.
- Gradually turn up the MICROPHONE (INPUT) VOLUME until feedback just starts to occur (you should hear a whine noise) and then turn the volume down a little until you can no longer hear the whining noise.
- You might have to experiment with the volume control to get optimum results.
- Note: Lapel microphones are designed primarily for studio use and are likely to suffer from feedback problems if used in a public address (PA) type environment.
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