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Doepfer

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Message

Re: pitch problems using a171 vc slew limiter

2002-10-25 by Joe Buechler

I removed the jumper to break the connection from my A190 to the 
bus, and patch the A190, or the A156, or whatever, to the A185 
instead.

Hope that helps.

Joe
--- In Doepfer_a100@y..., "duffnuff" <duffnuff@h...> wrote:
> hmm, ok.  thanks for the suggestion but i'm confused as to how i 
> would patch it in.  does it work just being on the bus?  so i start 
> drawing cv from the 185 instead of the 190?  
> -duff
> 
> 
> --- In Doepfer_a100@y..., "Joe Buechler" <buechlerjoe@t...> 
> wrote:
> > I had the same problem until I added the Bus Access module 
> to 
> > buffer the pitch CV. Then the problem went away. Ditto for A156 
> - 
> > produced pitch CV.
> > 
> > Joe
> > --- In Doepfer_a100@y..., "duffnuff" <duffnuff@h...> wrote:
> > > i'm having problems performing simple portamento using 
> the 
> > > a171 vc slew limiter.   when i apply the a171 slew limiter to 
> pitch 
> > > cv it results in serious intonation problems.  i went back and 
> > > checked the a190's scale adjustment w just the a190 and an 
> > > oscillator, checking across 4 octaves w a tuner, it's fine.
> > > 
> > > seems my a171 will not pass cv cleanly regardless of slope.  
> it 
> > > causes portamento, will adjust from slow to fast, but notes 
> are 
> > > wrong.
> > > 
> > > when i patch the a190's cv1 output to the a171, then to the 
> osc, 
> > > middle C drops 1/4 step, and intonation goes completely out 
> of 
> > > whack.  this occurs even when using only one osc.  very 
> > > frustrating.  completely unusable.  that's w no slew applied.  i 
> > > also taped the middle C key down and left it for several 
> minutes 
> > > but no change in pitch during that period.
> > > 
> > > could this possibly have anything to do w using non-doepfer 
> > > osc's?  i recall having to alter the scaling of the a190 when i 
> > > began using it w a pair of ASys rs95's.  once the scaling was 
> > > adjusted they played perfectly together, except now when the 
> 171 
> > > intercepts the pitch cv, then the a190's scaling wants to be 
> > > adjusted back down to doepfer's default position.  
> > > 
> > > any thoughts?  is there a bias adjustment i don't know about 
> > > within the 171?  
> > > -duff

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