Seems to beg the question "Why bother?" but I stumbled on this by accident, and got a very good result.
Since I can`t plug the output from my lappie into my piano, cos I haven`t got that facility, I use a small external stereo (accordion) amp, and was linking up the piano and computer to that with a dual input I`d concocted. (the original one had self destructed through age).
I use the internal voices for general playing; Thease sound fine to me, and better through this accordion amp as you might imagine. Now, Pianoteq sounds fine through this too, but playability isn`t quite the same as with the internal voices. I`m getting there wi the velocity curve, but it`s taking time . . .I use it for recording from a pre recorded memory stick.
The "PC2" setting on my piano enables Pianoteq to function; "PC OFF" the Yamaha. "PC1" enables nothing . So I thought. In reality, "PC OFF" still enables Pianoteq to function, so I get the sound from both.
Lucky me! It`s brilliant . . . . .!
"I'm playing all the right notes — but not necessarily in the right order." Eric Morecambe