Yamaha DTXpress/DTXplorer/DTXtreme

On the Dtxpress I module inputs 1 through 8 could provide choking 
with a stereo cymbal pad.

On the Dtxpress II module inputs 2, 6 and 7 are the only ones capable 
of providing choking for the stereo cymbal pads. 

On the Dtxpress II module with the update ROM chip inputs 1 through 8 
could be choking for the stereo cymbal pads.

On the Dtxpress III module all inputs 1 through 8 are chokable with 
stereo cymbal pads, except if pad type RHH130 is assigned to input 8, 
then choking is disabled.

OGD