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Old February 20th, 2007, 11:31 PM
ddouglass ddouglass is offline
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Quote:
Originally Posted by jahern View Post
By Volume, are we only talking about the gain on the mixer or on the amplifier as well. Do better machines handle more power? etc.
It isn't a machine problem per se. The feedback is a sound loop created by sound from the speaker regenerating through the microphone. There are several things you can do to help prevent it.
Adjusting the amplifier will adjust the total volume (music and vocal) which isn't going to help if you want the audience to still be able to hear.
Adjusting the mixer levels is what you want. Hopefully you have a mixer with separate controls for each microphone and also for the music. That way you can adjust the offending microphone without changing the rest. If your mixer has treble and bass adjustments for each mic then you can lower the treble to stop the feedback. Also as Dave said it is a good idea to turn off the reverb/echo when using multiple microphones to help prevent the feedback.
An equalizer (a good one) can really help prevent feedback too, because you can lower the offending frequency's volume without effecting the rest of the frequencies of the final output. This would be a big help to you as the acoustics in most churches are not designed for amplified systems. They are usually built to allow the naked voice to carry well in the hall without having to have a microphone.

And Dave when a singer cups his hands around the microphone it is like yelling in a hall. Their voice is echoing off of their hands and can act just as a reverb....so they think, but it also channels the speaker sound into the mic at a higher level.
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