SciNote

I learned how to play keyboard on organ, so I am familiar with the operation of a rotary speaker and how it is used during a performance. My question is related to exactly how this speed-up and slow-down effect is applied to the sound. Now, I've been looking at the manual, and I see the parameter details of the rotary speaker effects on pages EN-293 and EN-294 (for rotary and drive-rotary) in the CTS-500 manual. Maybe I just did not see this clearly stated in the manual, but I'm now thinking that you can assign any of these listed parameters to the knobs to adjust during a performance while Active DSP is switched on and set to a DSP mode that includes a rotary speaker module. So, for the rotary effect, the parameters listed are rotary speaker type, rotary speed (fast/slow), rotary speaker stop, rise acceleration, fall acceleration, slow rate, fast rate, vibrato/chorus, wet level, and dry level. So, if you can set any of the above listed parameters to the knobs, then I'm curious about the rotary speed (fast/slow) parameter. If this is assigned to a knob, does rotating this knob simply toggle between slow and fast modes? In other words, does this mode simply treat the knob as a two-position switch, where rotating the knob to one part of its sweep is "slow", and the other part of its sweep is "fast"? If so, then that is a good feature, and then I can see how the rise and fall acceleration effects would come into play. I originally thought that you could only change the speed of the rotary speaker just by directly setting the speed with a knob, where the continuously variable sweep of the knob would directly correspond to the rotary speed, and that the rate of change of the rotary speed would just be dependent on how fast you turn the knob. In that case, your left hand would be occupied adjusting the knob to get the speed-up and slow-down effects characteristic of a real Leslie speaker. But if you can simply "snap" the knob left or right while playing to instantly switch between fast and slow modes, while letting the keyboard handle the rotary speed ramp-up and slow-down after you "snap" the knob to the desired speed, then you can much more easily play the keyboard like a real organist, and just quickly use your left hand to select speed modes, and then go back to using your left hand for playing the keyboard while the keyboard ramps up or slows down the rotary speed. I'll really have to get my hands on one of these keyboards to test this out. Of course, even if this is the case, this does not explain how these parameter settings work in my old CTK-691, as this keyboard does not have any kind of live-control knobs or buttons to change the parameters while playing, but that is a discussion for another day and another part of the forum.

When I check the manual of these new CTS keyboards, I see how the DSP effects can be customized. With the Leslie speaker simulation, I see that one of the parameters you can adjust is the acceleration/rate-of-change of the speeding up or slowing down of the Leslie speaker effect. My questions is, when and how would this be used? There is no button on the keyboard to change the Leslie/rotary speaker speed, so when would a Leslie speed-up/slow-down effect come in to play? I'll add that I have an old CTK-691 from about 2003 that has this same feature, and I never knew how it would be used on that keyboard, either. I assumed that it might be something that would be used if the keyboard was being controlled through MIDI, but I never looked into it.

I now understand that these parameters can be saved to a registration. But you only quoted part of my sentence to provide the answer of checking out pages EN-61 to EN-62 in the manual, which did not answer my original question (it appears we're talking about the CTS-500 manual). The original sentence quoted from my original post is... However, as I've looked at the details of what can be saved in a registration, I don't see any mention of the parameters that you can set with the assignable knobs, such as filter cutoff and resonance and envelope generator attack and release. You deleted the part about what can be saved in a registration, which was what I was asking. I had seen the pages (61-62) that you referenced to find out what can be set and controlled by the knobs, but nothing on those pages discuses whether those parameters (and by parameters, I mean the actual values you set with the knobs) can be saved to a registration or not. And again, on the pages that DO list what is saved to a registration, the actual parameters you set with these knobs is NOT listed. The manual lists the knob assignment, what parts of the keyboard are affected by the knobs, and the K1-K2 link on/off as to what can be saved, but does not state that the actual parameter values can be saved. Again, based on the post above and what I've read elsewhere, I've found that these parameter values can be saved to a registration, but this capability seems to have been accidentally omitted from the manual. And, as I wrote this, I realized that I may have not been entirely clear with my question, as the word "parameters" may have been a little vague. So, to be clear, I already knew that the functions that you assign the knobs can be saved to registration -- so that if you assigned K1 and K2 to, say, filter cutoff and resonance, then those functions of K1 and K2 can be saved to a registration. What I did not think the manual made clear is whether the actual vales that you set with those knobs could be saved, so that, if for example, you set cutoff to 500 Hz and resonance to 30% (just giving general values, here), could those actual values you set be saved? Like I said, it appears the answer is yes, but I did not see that in the manual.

I've been checking out the manuals for the new CTS-500 and 1000V, and these seem like impressive keyboards. However, as I've looked at the details of what can be saved in a registration, I don't see any mention of the parameters that you can set with the assignable knobs, such as filter cutoff and resonance and envelope generator attack and release. The manual mentions saving other aspects of the assignable knobs to a registration, such as what the knobs are assigned to do or the part of the keyboard that they affect, but I don't see anything about saving the actual parameters that these knobs set. In other words, if you call up a sound, and then use the assignable knobs to change the filter and envelope settings to create a new sound, I don't see anything mentioning that you can save these parameter changes, and therefore your new sound, to a registration. Has anybody tried this out, yet?