So then I took a circular Tupper-ware lid and held it about 1/2 inch away from the speaker's diaphragm, touching nothing but my hand, and tapped on it with a stick: guess what. When I tapped on the speaker diaphragm the snare sound was triggered just like a piezo would do. So just as a little experiment I took the grill off a bookshelf speaker, hooked up leads at the back and fed them through a 1/4 jack into my 2Box module's snare input. something to try in the DIY community.Yes, this is what I think might be going on. So, maybe they decided to use speakers instead of piezos.
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