Microphone feedback
Printed From: Progarchives.com
Category: Other music related lounges
Forum Name: Tech Talk
Forum Description: Discuss musical instruments, equipment, hi-fi, speakers, vinyl, gadgets,etc.
URL: http://www.progarchives.com/forum/forum_posts.asp?TID=10320
Printed Date: February 06 2025 at 20:31
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com
Topic: Microphone feedback
Posted By: cobb
Subject: Microphone feedback
Date Posted: August 19 2005 at 02:51
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Any information on the following annoyannce would be appreciated. I am having trouble with microphone feedback It is an SM58 going through a beringer mixer. I have tried position of mic and speakers, gain, getting the singer to only stay in the half inch zone, shark feedback destroyer, but nothing seems to fix the problem. I am not overloading the mixer, we are always under 0db on main. The AKG radio mic doesn't have any probs. Any sound gurus out there with practical knowledge, ideas or suggestions? |
Replies:
Posted By: MikeEnRegalia
Date Posted: August 20 2005 at 11:24
Sorry, you seem to have covered all the bases ...  ------------- https://awesomeprog.com/release-polls/pa/aotm-2025-1/vote" rel="nofollow - 2025 Monthly Release Poll Listened to: 
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Posted By: porter
Date Posted: August 20 2005 at 13:07
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the mic is broken in my opinion, if you have REALLY tried everything that seems the most likely theory...you can try other mics and see how they behave, but I'm almost sure that the 58 has a problem. (hey thank you for making me feel a "sound guru"....which indeed i'm not ------------- "my kingdom for a horse!" (W. Shakespeare, "Richard III") |
)Posted By: MikeEnRegalia
Date Posted: August 20 2005 at 13:30
Is the feedback a "real" feeback which occurs when people sing or loud noises are caught in a feedback loop, or is it just a constant high pitched sound? The latter might be a case of microphonic feedback. This is caused by parts of the microphone vibrating, so it's not an acoustical, but rather a mechanical problem. This penomenon also occurs by Les Paul style guitar pickups, when the metal plate surrounding the coils is causing vibrations. ------------- https://awesomeprog.com/release-polls/pa/aotm-2025-1/vote" rel="nofollow - 2025 Monthly Release Poll Listened to:
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porter wrote:Posted By: cobb
Date Posted: August 20 2005 at 21:40
| No, the feedback creeps in, usually when the singer moves back from the mic. It is a backing singer mic, so not in use all the time. I have tried placing the speakers behind, adjacent to and in front. The feedback destroyer picks up the feedback and kills it, but it can only allocate 10 frequency levels and the feedback seems to occur on more than these freqs. This means once it has allocated the 10 it goes back and steals the ones it has already allocated, leaving the original frequency open for feedback again. This of course controls the whole level of the system. I cannot get it to the levels I would like to be playing at. These levels are not excessive (small club, pub level). Maybe it is just an unresolveable problem that occurs with the combination of the sm58, behringer mixer and peavey PA & JBL speakers. The whole system only has an output of 300W, so i am not dealing with massive power output. |