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Subject: Re: [Simmons Drums] SDSV Trig Voltage Decrease

From: Nick Zampiello <newallianceeast@...>
Date: 2015-05-07

make sure that the cards are properly seated in the back plane.  there is a little tab that is supposed to keep the cards aligned that easily falls out. 
 
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On Thursday, May 7, 2015 8:48 AM, "lackan110f@... [Simmons_Drums]" <Simmons_Drums@yahoogroups.com> wrote:


 
Hi everybody!

I am new to this group, and the reason I am here is that I recently bought a SDSV-brain with 5 modules. I had a couple of questions and electronic obsession-Jesper thought it might be a good idea to pop them up here. 

First:
I am triggering the SDSV with a +10V trig signal. But the DSDV prefers +15V. Since the trig inputs are wired with a 100kOhm to ground, I tought decreasing this resistor might lower the SDSV's need for 15V to 10V. 

Has anybody done this? What is a good value to aim for?

Second; 
I think that the mixer section might be faulty in some way since slot 4 triggers slot 6 as well. First I thought it was a mod of some sort but it isn't. And the sensitivity pots don't seem to do much either. 

But my question is - how does one removing the mixer section? It is multi-pin soldered to the back PCB and the trafo sits on the right wall? Its like a chinese puzzle… :-)

Thanks for reading this far, best regards Peter in Stockholm