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Doepfer

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Re: a-136 distortion and mixer issues

2004-04-10 by klamb000

Was your A136 working correctly before, or is this something to do 
with a particular patch?  It would help to know what else you have 
patched into the mixer, as the A136 can invert phase, and phase can 
cause cancellation.

Here's a very general idea:

Unless you attenuate the VCO going into the A136, the VCO waveform 
will be clipped.  I've put an image in the files section 
called "neutral_A136.jpg" that shows how I get a neutral waveform 
coming out of an A136.

Now with a neutral setting, the A136 inverts the phase of, as well as 
amplifies, the waveform when "A" is greater than 5.  When "A" is less 
than 5, the waveform is simly amplified to the point of clipping.

In short, depending on what you have summed at the mixer, the phase 
of the waveform coming out of the A136, and relative levels, you 
might be experiencing a simple phase issue.

Regards,
Kevin



--- In Doepfer_a100@yahoogroups.com, "Julian" <julian@2...> wrote:
> Hello there,
> 
> Im curious as to why my a-136 is behaving like it is.
> 
> On some settings its fine all the way, but then on others:
> 
> If i have other things plugged into the mixer module, and i turn 
the level
> of the mixer up, past about 8, then all other inputs are cut from 
the mixer.
> 
> When i say cut, im talking as if someones removed the jacks - not a 
slow
> fading.
> 
> Im presuming that level 8 is aproximatly where the mixer swaps 
between
> atenuation and gain, but whats going on beyond this i have no idea 
about.
> 
> Any suggestions?
> 
> Cheers, Julian

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