Yamaha DTXpress/DTXplorer/DTXtreme

I, for one, would be surprised if there is a ground loop through the 
frame-if this were possible- one would expect a whole bunch of stray 
triggers. Sadly I would recommend a factory reset- this will "restore" 
normal voice and trigger settings and eliminate the possibility of a 
second voice being assigned to the hi hat pad. I have never tried to set 
up my hi hat as a second bass pedal- it sounds as though this might be 
what happened?

Creighton

(just back from vacation and feeling...well kinda tired and sad)