I use a CP88 with a Montage 6 stacked on top. I'm not sure how to connect them for midi and to use my CP88 as a controller keyboard. I saw Blake's recent podcast on how to use them which is great. But how do you connect the two keyboards via midi? Thank you.
If you strictly want to use the CP88 as a controller, you don't even have to hook up the green wire in that illustration, the red one alone will do.
Also re: "You would also want to set Montage to single-channel MIDI mode" -- not necessarily. It depends exactly what you're trying to do. In fact, I would say that most likely you do NOT want to do that. IIRC, if you use Multi mode, you can play up to 8 Montage Parts from the keys on the Montage itself, and another 4 Montage Parts from the CP88 (it can function as a 4 zone MIDI controller). If you switch to Single mode, either you can't play a different Montage sound from the CP88 as you are playing from the Montage's own keys, OR the Montage will be limited to playing a single Part. Though this latter approach could be preferable if one Part is enough for what you want to play from the Montage while four Parts are NOT enough for what you want to be playing from the CP88 (you'd be able to go as high as 8). But I think that's the less likely scenario.