Yamaha DTXpress/DTXplorer/DTXtreme

Kevin,
 
Sorry about the name confusion, it's been really hectic at work and the mind
is in overload.
 
But I agree with Stewart, and this is what I was trying to point out. Within
the KP65, one lead and ground goes to input 9 and the other lead and
"common" ground goes to the input 10. When you pull a cable out it will in
most case, from my experience, short one of the leads across the ground and
thus trigger a sound. When you plug the KP65 output into inputs 9/10, there
is no "rim" switch available, so you cannot actually trigger a rim sound. 
 
(In fact the KP65 doesn't have a rim switch circuit within, as there is no
need for one, although the input 1 on the module does have the capability to
receive one.)
 
So, when you plug something into to "input" jack on the KP65, you are not
connecting to a "rim" switch, but instead you are connecting to the
lead/common ground associated with the input no. 10, assuming the KP65 is
plugged into input 9/10 at the module with a stereo cable (TRS).
 
If the KP65 is plugged into input no. 1 and you remove the cable, you would
still get a sound generated in most case, as the plug shorts across the
"rim" lead/common Ground. Since you must activate the pad piezo at the near
same time as you close the "rim" piezo for the "rim" switch to activate, it
is possible that if you carefully insert the cable, you may not trigger the
pad piezo on the KP65, because it is extreme well isolated from the PCB that
contains the 1/4" input phone jack within the KP65. If you use sufficent
force while inserting the jack, you could activate the pad piezo at the same
time that the "rim" lead/common ground is being shorted across, thus
activating the "KickR" voice.
 
OGD

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From: moosetication [mailto:moosetication@...] 


--- Kevin Richard wrote:
> But from what I'm understanding there is no reason
> for the "rim" to be triggered from the second input.

Yes, there is. The "second input" is wired to the rim (sleeve) 
conductor of the KP65 stereo output. If you momentarily short it 
while plugging it in, it will "fool" the module into thinking the 
rim has been triggered.

Stewart


 
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