Panning and stereo in general is not something I have found beneficial for guys like me who play one nighters in differently configured rooms.

For instance: once a month I play a club that is L-shaped. The speakers are spread about 25 feet apart. Any parts panned to the right fail to make the trip to the part of the room that would be represented by the shorter leg of the L. Another room I play frequently is very wide, but not deep. The speakers are positioned about 45 degrees outwardly from the keyboard in order to cover the width of the room. Again, panning puts too much or too little weight on the voices panned to one side or the other.

I keep everything dead center which assures an even mix even in odd shaped rooms.

Eddie