Yamaha DTXpress/DTXplorer/DTXtreme

Keith,

OK thanks again. As soon as I have some time left I'll give it a try and tell the group how it 
worked out. 

> Yes, that sounds about right.  You can miss out the odd diode on any
> of the circuits, e.g. D2, but not D1 or D4.  This is because you need
>  D1 and D4 to stop the main pad signal from triggering the rim, but it
> is not strictly necessary to have D2 - it just balances the signals.
>
> Also, people have found they need to tweak the values a little,
> although that may only be on non-Yamaha pads/modules.  In particular,
> dropping R1 and R4 to 10k makes it more sensitive to rim shots.  Also,
> schottky diodes will reduce the loss through them rather than normal
> diodes.

Yes, with my Pintech ConcertCasts I also had to reduce R1 to lower values to get 
acceptable sensitivity of the "rim" (and omit D2 for sufficient intensity of the main pad). 
Can anything be improved (sensitivity/intensity) by changing R2/R5? 

Thanks again, Erik