Yamaha DTXpress/DTXplorer/DTXtreme

Bas,

Someone else had a similar question back in 1872, I think. I give 
you my answer from that era, because my brain seemed to be working 
better then than it is now. The answer to your question revolves 
around the difference between piezo triggers and membrane switches.

Input 9/10 will handle two mono FSRs or two piezos but not one piezo 
and one membrane switch from a "stereo" pad or cymbal, because 
stereo pads and inputs have a totally different electronic makeup 
than their dual-zone, or mono, counterparts. Inputs 1-8, as 
combinations of 1 piezo/1 (or 2) membrane switches (or FSRs), would 
seem, in principle, to permit a triggering opportunity for the two 
independent FSRs of a BP 80 or its equivalent if you could just get 
to them. The problem is that membrane switches on stereo pads are 
not independent triggers. Their open and closed positions (membranes 
are basically open/close toggles) determine what sound the piezo is 
going to make--whether the sound programed to the rim, the body, or 
a choke; the switches are, if you will, slaves to the piezo. The 
timing of how the interaction between them takes place, not to 
mention the delicacy of their relative physical locations in the 
pad, is complicated. But the upshot is that creative cabling won't 
help you; those inputs are  by nature single piezo inputs. You can't 
treat the "stereo" or "trio" inputs as taking multiple mono feeds, 
whether piezos or FSRs. 

Ed

--- In DTXpress@yahoogroups.com, "drumsix12" <sixpack1@w...> wrote:
> Thanks jim,
> 
> that's clear.
> 
> But can you tell me why that is.
> Isn't it that a stereo pad is nothing else than a pad with two 
> triggers in it.
> It also has two connections (stereo jack) so what's the difference 
> (elctrical) between a stereo pad and for instance a bar pad.
> How does the module see wether it's a stereo pad or two individual 
> pads.
> 
> Thanks in advance.
> 
> bas
> 
> 
> --- In DTXpress@yahoogroups.com, Ratzo <ratzo@t...> wrote:
> > On Mon, 24 Mar 2003 09:53:31 -0000, you wrote:
> > 
> > 
> > >What my intention was, is that I plug the KP65 into trigger 1.
> > >When i hit the base it would be pad1, and when i hit the extra 
pad 
> > >connected to the input on the kp65 it should be RIM1.
> > >The rim1 never worked on the KP65. The odd thing is that when I 
> > >connect a tp80s pas (dual trigger) to input 1, it all works 
> fine.The 
> > >normal pad is pad1, and the rimshot in the pad is rim1.......
> > >
> > >So, I'm confused here. Apparently there is a great difference 
> between 
> > >the electrical inputs on the tp80s and the KP65.
> > 
> > It's simple.  You can't have one pad trigger pad1 and another pad
> > trigger rim1.  To trigger the pad and rim on any input, you have 
to
> > use a stereo pad like the TP80S.  Input 9/10 can not be 
triggered by
> > the rim of a stereo pad.
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > ____________________________
> > 
> > Jim