carlaz wrote:However, Mission also has a "2 cable out" expression pedal that includes a on-off switch in the toe, just like a "traditional" wah. The AXE I/O has inputs for two cables, so you can run the two cables out from the expression pedal (if you got that kind) and control both the rocker and the on/off with the toe switch. This ought make things "work like you expect" for controlling wahs, etc.
Just as an update to my ongoing experiments with the AXE I/O and expression pedals, I can confirm that that expression pedals with 2 "switches" (a rocker pedal and a normal on/off switch, as per a traditional wah) can indeed be made to "work like you expect". There are a few tricks (which may be obvious to others, but were not initially obvious to me
):
- One of the outputs of such a pedal (probably output 1) is the rocker pedal, which needs to be set in the AXE IO control panel as "EXPRESSION PEDAL".
- The other output of such a pedal (probably output 2) is the switch, and needs to be set (apparently) in the AXE IO control panel as "SINGLE SWITCH" of the type "MOMENTARY" (and not "LATCH" as I might have expected).
- In the AmpliTube GUI, right-clicking on the "treadle" part of the wah pedal UI naturally enough gives you access to the options to "learn" the MIDI controls from the expression pedal. (Telling AmpliTube to "learn" the wah and rocking the "treadle" part of the pedal achieves this.
- Slightly less obvious can be setting the on/off part for the switch. Some Amplitube wahs have simple 2-way on/off switches in the GUI; others have a 3-way on-auto-off switch. You can right-click on a 2-way on/off switch to teach Amplitube about your pedal's switch as you expect, but this doesn't work so well with a 3-way switch. For these, however, you can right-click on the pedal GUI's red "on" LED, and this lets you teach AmpliTube to use your pedal's switch for bypass.
It took me a while to work all that out, but I am so digging -- after all these years! -- being able to not just control AmpliTube's wahs with an expression pedal, but turn it on and off with a switch in my physical pedal, just like a traditional wah.
I also got a separate little double-switch pedal, which has two switches each of which can control one "on/off" switch in AmpliTube via a single TRS cable into a single expression pedal input on the AXE I/O. These (in contrast, apparently, to the on/off switch on my dual-switch expression pedal) do need to be set to "LATCH" (in the "DOUBLE SWITCH" controller type in the AXE IO control panel) to work as expected, though actually I can see uses for setting them as "MOMENTARY". It's kind of too bad the that the AXE I/O only has 2 expression pedal inputs: with 3 inputs, you could then have a dual-switch rocker pedal to control wahs and similar rocker pedal stomps in a traditional way (with an on/off toe-switch)
and also a separate dual-switch on/off pedal to turn two other stomps on and off as well. Still, that's not a huge issue for me as someone who is principally recording at home, and I guess people who are wanting to do the live things are probably using the iRig Stomp I/O or the iRig BlueBoard.