I don't know of a "detector", but my wife (HS choir) once had a sound system that had feedback problem and she had to quit using it. I went into the room to check it out, but could not hear any problem at all.
A student happened into the room when I was troubleshooting and fell to the floor in pain as I raised the volume. Then I knew there really was a problem with that "teen frequency". I finally found a couple inputs that had been reversed by "busy hands" and fixed the problem. Hmmm...who needs a detector with a weapon like this? ;-) Keith Mack [email protected] http://www.literacyworkshop.org _______________________________________________ The Literacy Workshop ListServ http://www.literacyworkshop.org To unsubscribe or modify your membership please go to http://literacyworkshop.org/mailman/options/lit_literacyworkshop.org. Search the LIT archives at http://snipurl.com/LITArchive
