I guess this happens with any psr keyboard, especially when you have dsp effects and stereo samples. The stereo samples and effects create a good depth by using phase differences between the signals in left and right. When you combine them in mono, some of these signals will cancel each other out, resulting in a loss of depth in the sound. I suggest try tweaking the effects and see how it affects things, or use two stereo outputs and mix them into a single output via a small mixer - in this way you can alter the blend of left and right to attempt to compensate for some of this problem.
Try switching off the effects (reverb, dsp) and see what happens.

Simon



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Simon G.K. Williams
simon@svpworld.com
Creative Music & Multimedia
http://www.svpworld.com
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