Yamaha SK50D synthesizers have a Leslie speaker output on the back to work with 2-channel Leslie speakers, like the 815, 715, HL-722, HL-822 and HL-422 and 415 models. They’re the last generation of the older 11-pin connector Leslie speaker company. The SK50D also has controls for both manuals so you can select which keyboards and sounds will use the Leslie channel. This video gives and overview and demo of this function.
