I am trying to set up a pa system with a mixer, eq, compressor, and amp. When I go in and set up the eq and all with just me and a friend in the hall. The sound is bang on. But later, when 100 people show up the sound is horrible. (sounds tinny) Any ideas on how to set this up before hand to counter the 100 people in the room? How do the pro's do it?<br>Thanks.<br>Btw I am used to home recording, but not live setup..<br>I have a spectrograph on my computer to run though.