Simon's explanation is 100 pct technically correct. Uncle Dave is also correct in that the Y adapter would merely mix the signals outside of the keyboard, resulting in no difference.

Scott, this problem is not unique to the PSR series. Any kb that has the L/R outputs and "stereo" effects will do it. I noticed that my Motif didn't sound "right" when I first hooked it up just using the L/R output. I needed to use separate L and R outputs. The only way to use a signal from the L/R output and have it stay "clean" is to ensure that you are not using any kind of chorus or other phasing type effects.

AJ

[This message has been edited by Bluezplayer (edited 11-13-2002).]