Hi all. SK2 with 8 pin cable into a 2101 mkii, and 1/4" out from SK2 mono jack into a keyboard amp. Using selection #3 here's what I have; with bypass turned on, raw/dry organ ( no speed controls) and all ev's go to the stationary channels of the 2101 and to the keyboard amp. With bypass turned OFF, organ (with speed controls)goes into the 2101 rotarys; the ev's go into the stationary channels of the 2101 and to the keyboard amp. Using selection #1 here is what I have; with bypass turned on, organ goes to 2101 rotarys, speed controls work and ev's go to the stationary channels; ev's also go to keyboard amp. With bypass turned OFF it is the same as bypass turned on. What amp/Leslie configuration are you looking to hook up? Hopefully this helps you. I also have a Vent but not using it much as the sim, once dialed into your taste, really gets the job done. Also I find that if you use a Vent with 1/4" from the SK2, the ev's get into the rotary unless you hit the bypass on the Vent, and then the organ is dry unless you hit the bypass on the SK2, then you have the organ sim signal working properly ( Leslie-fied) and the ev's working properly. So, sometimes less is more. ;^) good luck!