Yamaha DTXpress/DTXplorer/DTXtreme

Hi

can someone explain why when i attach a 3 zone pad using a stereo cable 
to input 3 (tom) and then assign it as a 2 zone pad in the menus i get 
the 2 sounds - pad and rim  as i would expect

why is it then if i attach 2 mono pads via a stereo splitter  to the 
same input, still calling it a 2 zone pad in the menus 1 only get 1 
sounds from 1 pad ie its only recognising 1 trigger - surely the 2 pads 
should act like rim and main pad of a 2 zone pad?? 

isnt it just a case of 2 triggers into a stereo input - why is it 
making a difference whether its a 2 zone pad or x2 mono pads??? - help 
please

A two or three zone pad has only one piezo.  The rim switch is
connected to the connector ring and is used by the module to determine
if it is the main area or rim that has been hit.  You therefor cannot
feed a piezo into the connector ring (and you risk blowing up the input).

It can be done using the "magic box" which turns two piezo signals
into one signal plus a pseudo rim signal.  (search the archives or
look for the "DTXpander cheap.pdf" circuit in the files section if you
want to build one).

Keith.