Yamaha DTXpress/DTXplorer/DTXtreme

--- In DTXpress@yahoogroups.com, "emanuelefgalati" <galahad89@...> wrote:
>
> I'm sorry maybe i don't explain myself...my english is quite bad...
> I have a PCY65S but i would like to build another chokable cymbal...I've read a lot of forum, but i couldn't understand how to make piezo/piezo to piezo/switch adapter circuit...I'm sorry but I haven't electronic knowledge...It's possible for me building a chokable double zone cymbal with pvc plastic cymbal?
> thank you
> Emanuele

Ok, I understand now.  I guess you have seen most of these?

http://launch.groups.yahoo.com/group/DIY-edrums/

http://www.toontrack.com/edrum_for_free.asp

http://www.vdrums.com/forum/forumdisplay.php?f=48

http://www.dtxpander.co.uk/

A chokable cymbal would need a rim switch, but that is difficult to make so most DIY e-cymbals use two piezos.  I don't know anything about making e-cymbals, but there is loads of information on those first three links about it.

To make the DTXpress choke with a dual piezo cymbal you need to convert the second piezo signal to a rim switch signal.  That is what the DTXpander circuit does (my design).  You could use a single piezo cymbal and any momentary switch to choke it, just wired between the connector ring and sleeve.  A dual piezo cymbal would obviously give you two sounds as well as the ability to choke.

Keith.