I believe last April I posted about a service call I had gone on at a local church. The suspected that they had blown the speaker in the sanctuary. It turned out that the mixer was so out of whack gain structure wise its surprising it didn't blow the speaker.
Well, I as called back in yesterday afternoon. Yep, screwed up again. Most gain knobs to the max. Hi, mid and low EQs all over the place. Channel faders as far up as they could go and mains barely off of the bottom. Ambient voice in the room was causing the meters to jump to red.
Zero'd everything out and started all over. Sounded decent for an old system when I left.