This video demonstrates how to ring out a PA system to eliminate feedback. Releasing May '06, The Ultimate Church Sound Operator's Handbook by Bill Gibson, contains almost 500 pages of full color text, photos, illustrations, and a DVD with audio and video examples teaching everything you'll need to know to be a live sound engineer.
If you have difficulty seeing this training video, click on the title at the top of the article ("How to Ring Out a PA System").
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