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Re: Rim trigger with RHP120SD pad

2007-11-07 by Keith

> Thank you very much for you answer Keith, it's pretty clear that I 
> will not be able to get the cross stick using the Snare input ( and 
> I don't want to use the 9/10 input because they are already in use 
> by other pads, also the snare would be misplaced for all the factory 
> drumkits). I still have on question, what is exactly the difference 
> between a piezo input and a rim switch???
> 
> Nicolas.
>

Nicolas,

The piezo actually produces the signal.  The normal pads (stereo or
otherwise) only have one piezo.  To get the rim sound they have a
switch on the rim which is connected to the ring of the connector. 
When you hit the rim, the signal still comes from the piezo, but the
switch being closed tells the module to make a different sound.  The
old RHP pads just had two piezos and used two inputs.  Pintech snares
do the same.

There is one other solution if you are handy with a soldering iron. 
Look in the files section for "DTXpander cheap".  This is a circuit I
designed which converts two piezo signals into a single signal plus a
simulated rim switch signal.  It would allow you to feed the RHP into
the snare input.  I cannot say how well it will work with the RHP.  It
has been used with quite a range of pads and modules, from Roland,
Pintech, Yamaha and home made, so it is worth a go.

I do have a few made up which I sell to people who don't want build
their own, but with the dollar being worth less than two sheckles at
the moment and me being in the UK, it tends to work out expensive if
you are in the USA.

Keith.

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