also another thing i just noticed on my recording, for about the first 20 minutes, little thumps can be heard. my mic stand was swaying back and forth for that portion of the show, i have no idea what caused it since it was indoors and my stand was taped down with lots of duct tape, maybe a fan or something from the ceiling, i also thought maybe the pressure from the speakers but i was about 20 feet back? any ideas??