And!!! To create a wider stereo image, with the bass more isolated to the left and the treble more isolated to the right, try this lid and mic setup, with the mics near and outside the lid and following its line. (I posted this in response to Creart's post about stereo width, too, but thought it was worth duplicating.) Note the settings in both the Top view and Front view:

By jakejohnson at 2009-12-15
Sliding the mics closer together or further apart changes the width, of course, but move both mics together instead of one at a time...BUT note the lid position is important--at this 45 degree angle, putting the mic at the top of the lid means it is nearer or over the right side of the keyboard. if you raise the lid more, and move the mic to stay at its uppermost end, you move the mic towards the center of the keyboard, and thus lose the treble-on-the-right. Conversely, the more you close the lid, the more you may want to move the right-side mic to the right, over the treble...
AND: If you close the lid more, you may need to also move the left mic, too, slightly to the right. Otherwise, the lid may direct the sound at a new vector, moving the bass sound back to the middle.
Even if you don't feel the need to isolate the left and right notes much, this setting is worth playing with, since slight adjustments spread the center notes a little, too, isolating where they come from a bit more.
AND: Play with the Sound Speed parameter in conjunction with this mic setting and with the Piano Size parameter, in the Options\Midi thing, to control the "fullness" of this isolated bass and treble sound--a bigger piano seems to keep the two sides isolated with this lid\mic setting but fill in the center a little more. (Assigning the Piano size to the mod wheel makes experimenting here easy.)
Last edited by Jake Johnson (17-12-2010 00:43)