no sound when switching to manual operation Spider IV 75 in Spider IV / Spider Online Posted April 8, 2017 If I hit the manual button, I have nothing. I turned all knobs, even volume and master volume to max and still nothing. I thought "maybe I have to save to a preset", so I tried to do that. Still nothing. Just silence when I select that preset. What am I doing wrong? Recap: I have no sound when going to manual button or trying to save any settings while in manual setting.