I just got a dbx 231 eq. We practiced with it once and I did the recorded sound turning each fader till it sounded good for the room. Last night we had a gig and I was goimg through the process again to try to tune the room. An "old pro" came up and told me to do the smile thing and go from there. Next thing it was time to play and I didnt feel comfortable with the way things sounded. The bass was boomy, the mics were pickin up the drums adding more boominess and we wer told the vocals were muddy. I tried adjusting while we played but it was hard since I also play bass. Any tips to tune the room quickly? Start flat and then go from there? How do I keep the vocals from being muddy?