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Yamaha DTXpress/DTXplorer/DTXtreme

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Message

Re: Keith's "cheap" DTXpander

2005-06-04 by Keith

--- In DTXpress@yahoogroups.com, "plhalli" <phalli9966@a...> wrote:
> I have assembled the "cheap DTXpander" circuit that Keith posted to 
> this site recently and have had partial success with it.
> A mono trigger wired to input J3 plays the "pad" sound fine. 
> My problem is with input J1 and it's related circuitry: a mono trigger 
> wired to input J1 will only play a "rim" sound on a hard hit, on a soft 
> hit it plays the "pad" sound. Naturally, I want J1 to play the rim 
> sound all the time, and with at least some dynamic range. Tweaking my 
> DTX 2.0 brain did not help.
> If anyone out there has tried this neat little circuit with different 
> results, or has any ideas on circuitry modifications, please post.
> Thanks
> Phil
> P.S. Many thanks, Keith, for your hard work.

The DTX 2.0 will not adjust your way out of this problem.  Have you
got an output adjustment on the pad itself?  If so, increase the pad
signal as much as pissible using it.  Another possibility is to
reverse the connections from the pad (a bit of a long shot, but you
want the positive going peak first).

If neither of those suggestions don't work then unfortunately you will
need the complicated circuit - with gain on the rim detect.

Keith.

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