im having trouble setting up my PA, it keeps feeding back whenever i get it anywhere close to a level where we can hear our singer, i dont know wether its the speakers im using or my mixer, but this is unnacceptable.
its prolly your input settings. what i normally do is this, first set the slave volume about halfway (maybe a little lower) and turn the master volume up until the volume is good. also make sure the mic is pointed AWAY from the speaker. i sing karaoke and this is how i have the dj set it up and i can stand right next to the speaker and sing without any feedback. hope this helps!! FYI really cheap mics can also be the cause of unwanted feedback.