Our band is set up in an un used office space where I work, the area is aprox. 20' x 20'. We have been searching for a good sound mix for months now with no success, it is a muddy mess ,or someone is overpowering everyone else,or a combination of the 2. I would like to be able to keep the volume at a reasonable level without loosing the edge. I have tried moving all the amp cabs into a joining room and running it all through the P.A. but the mud sound seemed to increase in doing that. any advice ?