help please... sound trouble

[norcodh]

I run the sound system for plays, we have 4 wireless body mics, and 2 receivers (each with 2 channels) made by Azden, a Soundcraft Spirit f8 mixer, and amp and all that needed stuff. We are getting random feedback through the mics, its not happening all the time but sometimes its just static and other times its like a low base sound. The sound set up is 50 to 75 feet away from where the mics are, and there a little below the same hight level. is it possible that this is happening because the mic receivers are less than 3 feet from the amp and other equipment? If you have any ideas about our problem please let me know.

[Florian]

I dont know the "reason" but i can recommend the Behringer Feedback Destroyer.

-Flo

[norcodh]

I need to work with what I have now....