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Robots for Robots → General Hardware / Software Discussion → trigger conversion
Not sure about the pull-up, but my tech built a little converter box for me using this schematic :
http://www.cykong.com/Synths/Moog%20Rea … ersion.gif
I use it to trigger my MG-1 with a normal v-trig.
Yes, I was thinking that I could use the available V-Trig out instead of S-Trig and make a V-Trig-to-S-Trig cable, but I am not sure if that would solve my problem, maybe I would still need to modify the synth?
uhmm... never heard about 'pullup' before? does the pro-2 handle hz/v & s-trig at all?
cs15d worked fine with my kenton pro-solo if im not mistaking. can't remember anything about a pullup setting.
Thanks Tony, I'll try to make my tech do me one of those boxes (he's very lazy).
@hans olof: Yesterday was the first time I heard about pullup too. As I understood, since Yamaha needs negative voltage for note on and positive for note on, it basically means that when converter does not output any voltage, the pullup resistor gives the output of +5 or +15v... That way when the voltage is not applied the synthesizer will turn the notes off. But doesn't that mean that my Pro-2's S-Trig which does not have a pullup voltage should still trigger the synth but just not turn the notes off when it should?
Pro-2 is fitted with the S-Trig on both channels and mine have an optional Hz/V out on one channel. Pro-Solo has an S-Trig with pullup by default. Maybe I should buy a Pro-Solo...
ok i see.
another tip for when you have solved it; use a pair of splitter cables to control the preset part aswell. it does have cv/gate inputs for both right? mine is long gone but i did it on the cs15 (which is also long gone).
ok i see.
another tip for when you have solved it; use a pair of splitter cables to control the preset part aswell. it does have cv/gate inputs for both right? mine is long gone but i did it on the cs15 (which is also long gone).
Yes it has separate controls for both sections. I actually asked the Kenton tech support if my Pro-2 would have enough voltage to drive both oscillators using a splitter cable and they said that it would be no problem. Also they said that the 5V resistor would do the trick. I just don't know where to put it. 
this thread might be the right place to ask this question:
Is it normal for my cs-15 to become about an octave higher when controlled by cv/gate ( hertz/volt ) ?
Rude66 already told me this is kind of normal for the yamaha cs series, but i just think it's so strange...
Yes it's the same with my CS15D.
Why ? Why do cs synths have that feature ?
Can't believe they implemented it, so why didn't yamaha do anything about it when they found out about this design fault ?
Or isn't it a fault and am i missing something ?
Or could it be the midi to Hz/Volt converters that are to blame ?
A lot of questions suddenly appear
I'm just so surprised about it, and even more surprised i haven't read about it before.
Seems like something worth mentioning as a downside.
Good thing it's about the only downside of the cs15
hz/volt is choosen because these were low budget synths like the korg's.
and they saved some bucks to come with a vco with a lin/exp converter in the design.
Robots for Robots → General Hardware / Software Discussion → trigger conversion
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