I read both manuals, I see where it tells me how to setup the system for a quillable whistle/horn, but I saw nothing that tells me what to do to make it operate (quill) once it's setup. If I simply press the whistle/horn button on the CAB1-L I get the horn to blow (GP9), but the sound stays the same, or close to the same.
Isn't there a slide control on the CAB2 that enables the whistle/horn to be quilled? Do I press the whistle/horn button on the CAB1-L PLUS something else?