I couldn’t get the three pedals to work, just the rightmost pedal, the damper. Ultimately, the problem was the stereo jack wasn’t fully inserted in the Pedal 4 socket on the SL73 keyboard. It took a good while to troubleshoot because inserting this cable has a different feeling from the mono jack on the SLP-100 pedal that came free with the keyboard. Troubleshooting this was useful because I learned that Logic Pro didn’t have instruments that could test the Soften and Sustenato pedals so I used Midi Monitor and the demo version of Pianoteq to see what MIDI control signals were coming from the keyboard, plus I was obliged to read the SLStudio manual carefully to discover about switching off other zones or at least setting all zones to the multipedal for pedal socket 4 when using the multi-pedal in one zone. So now I can use all 3 pedals of the SLP3-D multipedal as Una Corda, Sustenato and Sustain, with the free SLP-100 as a Harmonic pedal. Pity that doesn’t make me any better of a pianist. Love the keyboard and multi-pedal unit from Studio Logic.
Addendum: I wrote this MIDI plug-in script for Logic Pro to use with the Una Corda pedal:
/*
Soft Pedal script for Logic Pro X to load into the MIDI Effect Slot in the Left inspector channel strip via Scripter
Author: Adrian Ó Mealláin
When the Una Corda (or Soft) pedal is depressed, this script lessens the volume of notes, shortens them and removes AfterTouch events.
To emulate the duller tonal quality with a real Una Corda pedal when the hammer hits felt not-so-often hit,
the note is shortened to make it stop more abruptly and seem to ring less.
*/
var softPedal = false; // Toggles true/false with the soft pedal switch
var cc = 67; // pedals CC64 sustain, CC65 portamento, CC66 sostenuto, CC67 una corda or soft, CC68 legato, CC69 Hold 2 or harmonic
//create sliders to adjust the velocity (of loudness) and note-length Una Corda properties in the plug-in settings pop-up menu
var PluginParameters = [{name:'Fractional Velocity', type:'lin', minValue:0, maxValue:1, numberOfSteps:100, defaultValue:0.6},{name:'Length in millisecs', type:'lin', minValue:100, maxValue:1000, numberOfSteps:9, defaultValue:300}];
var noteVel;
function HandleMIDI(event)
{
if (event instanceof ControlChange && event.number == cc) {
//toggle the Soft Pedal ON and OFF (i.e., TRUE or FALSE) when the pedal is pressed to send a Control Change 67 signal
softPedal = !softPedal;
noteVel = GetParameter('Fractional Velocity');
}
if (softPedal == true) { //the Una Corda pedal is pressed
//alter (i.e., soften) the velocity of the note by the franctional amount set in the slider
event.velocity *= noteVel;
if (event instanceof NoteOn) {
//shorten notes
var shorten = new NoteOff(event);
var noteLeng = GetParameter('Length in millisecs');
shorten.sendAfterMilliseconds(noteLeng)
}
}
if (event instanceof PolyPressure && softPedal == true){
//don't respond to AfterTouch with the Soft Pedal on
}
else {
event.send();
}
}
