I don't know if he remembers but that was the magical thing I learned from innerear many years ago when volunteering at the modified. He taught me that if you heard a certain frequency feedingback, you would just lower that frequency down with the equalizer. Sometimes I got the wrong frequency at first and would be fiddling with frequencies trying to find the right one, but after awhile you knew which frequencies where the common trouble areas to look for, and this allowed you to crank the P.A. up more than you could previously
It sucks being rather new at working a soundboard while an out of town band is playing and feeding back and looking at you from the stage like you are an idiot. You can either turn the mains down, or just turn the frequency down that is feeding back, not an easy decision at first because just turning the mains down is the easiest thing to do, but not really the best if you can just drop the frequency that is feeding back. Definitely something you learn to pick up quickly in those situations.
See I aint all bad.
Alot of good suggestions. I think the easy way is to grab a graphic eq and ring out your room. I would advise against behringer because more often then not it just makes everything sound even worse.. But Rane, DBX, even alesis make ok Graphics for fairly cheap. I'm sure the mics you have are very simular to if not sm58s they should be fine.
I was fully planning on attending, then I had a last minute session get booked. I suppose I still could have gone, but since I'd been up since 7 and worked a 12 hour work day I decided that staying in Phoenix an hanging out with an attractive girl seemed like a much better way of spending my evening. Plus Billy I wouldn't like you as a christian.