by commodorejohn » Wed Dec 31, 2014 6:58 pm
I can't speak for the JX-3P as I've never used it, but on my JX-10 and my SQ-80 both, I've attempted that trick, and in neither case has it sounded right, even with careful calibration on my part so that it doesn't modulate past the point where it would have more than one cycle on the slave oscillator per cycle on the master. Any synth with real PWM (the Prophet 600 I owned, the Minibrute, h**l, even manually twiddling the knob on my MS-20 Mini) better "typifies my expectation" than that.
Computers: Amiga 1200, DEC VAXStation 4000/60, DEC MicroPDP-11/73