If you plug a stereo damper pedal into a mono pedal jack, it will only see one output, so it'll function as a simple on-off sustain. So there's no issue with backwards compatibility. Since the MIDI protocol for sustain is simply on-off, it wouldn't matter whether you have a switch or a continuous output. This would be simple enough to check if someone has one with a multimeter and/or simply taking the unit apart. So if the newer ones have a pot, then I would guess that the above would be true? The DP can then interpret the variable signal in whatever way is appropriate. I've taken apart old fashion switched pedals and they are just that, an electrical switch. if you plug it into a dp without half damping capabilities, the contact would end up touching the "on/off" only part) and the other would send a variable voltage (if your comment about it having a pot is true). My guess (and it is just that, a guess) would be that it uses one signal line for backward compatibility (i.e. OR, you could connect two on-off mono damper pedals to two different pedal inputs, set them to CC#64, and depress both simultaneously to see if you can get a half damper effect! Now THAT would be interesting!
#Wah pedal on kurzweil pc2x Patch
If my theory is correct, then you could conceivably split the signal from a TRS damper pedal using a Y cable, patch each mono output to different mono pedal inputs on the digital piano or MIDI controller, and set both inputs to CC#64 to achieve half-dampening. (Or if there's only one pot, perhaps the PCB splits the signal and implements it differently for TIP and RING.) And that somehow, MIDI interprets the overlap in a way that halves the damper effect. Here's my theory: The TRS is needed for half-dampening effect because it's actually sending TWO MIDI CC#64 messages simultaneously, but with different pot resistances/ranges that overlap in a middle section of the pedal's travel. They're all mono and their volume pots are of course continuous. You can easily have a mono signal send continuous data. How? I don't know, maybe different voltages?īut this is what's confusing me. 3 cables are needed for continuous pedal. Oh jscomposer, that link also "kinda" explain why TRS is needed. And if that were the case, wouldn't it be simpler, cheaper, and more universal to simply use mono?
#Wah pedal on kurzweil pc2x software
I could imagine using a simple pot-based pedal with a mono plug, and having the digital piano, MIDI controller, or software piano recognize something like 0-20 = OFF, 21-60 = HALF, and 61-127 = FULLY ON. They make no mention of being able to change that, and one of their tech guys here in the US said it's not possible. So even if you were to use a pot-based pedal, it'd work like a simple on-off switch. According to their manual, MIDI CC#64 (sustain) has values 0-63 corresponding to OFF and 64-127 corresponding to ON. So the question is, is it really possible to have half-damper effect with a mono plug? For example, the Studiologic VMK-188 has 3 pedal jacks, all mono. Plus, my MIDI Solutions Pedal Controller comes with a TRS jack and their description says it can be used with "any potentiometer connected to a 1/4" stereo phone plug." I seem to remember the CME GPP-3 pedal using a pot, and it still had a TRS jack. Someone at Kawai told me that it could be because they use optical technology, and that older sustain pedals that were capable of half-damper came with mono plugs and used a potentiometer.
![wah pedal on kurzweil pc2x wah pedal on kurzweil pc2x](https://images.reverb.com/image/upload/s--DJtSXj3I--/a_exif,c_limit,e_unsharp_mask:80,f_auto,fl_progressive,g_south,h_620,q_90,w_620/v1467562211/xjupsgx1b7evezy9yada.jpg)
Seems like all the sustain pedals capable of half-damper effect feature TRS plugs.