OK, I'll try to disseminate my hard won ability to assign a MIDI control to the Leslie FAST/SLOW…
This is about the Amplitube version, mind you. I don't have TRacks, so I don't know if the procedure is different.
In this example, I start out with the standalone version of Amplitube 4.4 and I select the 'Classic 122 Stereo' preset. What happens is that the amplifier appears (Amp A in the chain on top). The component I want, though, is the cabinet, so I click the Cab A box in the chain.
When the cab has loaded, I click the MIDI button in the lower right hand corner of the GUI. The MIDI Control window appears in Program Change mode. I want Control Change, so I click on the button that says (you guessed it…) Control Change.
With Control Change selected, the window goes blank (which can be a bit disconcerting). Also, by default, the Preset button just below the Control Change lights up. That's the way I want it – it means that the assignment(s) I'm about to make refer only to the currently selected preset ('Classic 122 Stereo' in this example).
Now comes the important part. I click the Add button below the empty grey window. A pop-up menu appears and just below the middle is a field named Cab A, with an arrow to the right signalling that there is a sub menu. On roll-over, I get a pop-out field named '122', also with a right pointing arrow. When I roll over it with the cursor, a long list of control targets appears and, close to the bottom, the magical word 'speed'.
I click 'Speed' and hey, presto! – a yellow field appear along the top of the previously blank grey window. It says to the left 'Cab A – 122 speed' and it has several options to the right: CC#, Min, Max, Curve and Latch.
I drag horisontally in the CC# field which is intitially set at '0' until I reach '64'. I then click in the rightmost 'Latch' field to change it from 'OFF* to 'ON' – this is optional, but it's because I prefer my momentary foot pedal to work as a toggle – press once for speed up, press again for speed down. Some people prefer to get the fast speed as long as the pedal is pressed; then the latch field should be left at 'OFF'.
I then click 'OK' and it's done. The last operation is to store the preset using 'Save as', adding, for instance, a handy description to the preset name, such as 'Classic 122 Stereo CC#64'.
That's it!
Kind regards,
Joachim