Gary,
Why would the mixing board have to be panned in extremes as you seem to imply?
A great stereo image could be easily produced by judicious panning and therefore give the audience a much more substantial and authentic sound.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.