PLAN B analog blog

I recently bought a model 15 vco... first off it sounds incredible.  It 
really is 'obese' as advertised.

I was curious how everyone's morph section sounds.  On my module, manually 
morphing between waves seems to take place only between the 11 and 12 
o'clock tick marks.  Heck, maybe even less range.  I was thinking maybe I 
got a bad vactrol?

Anyone?

Thanks,
Tim

hello tim,

the usable morph knob range is relatively small on my
model 15's too, but not as small as you described.
i doubt that the vactrol is broken, but maybe the
behaviour is caused by component tolerances.

best wishes

ingo



--- Tim J <bob_aloha@hotmail.com> schrieb:

> I recently bought a model 15 vco... first off it sounds incredible. 
> It 
> really is 'obese' as advertised.
> 
> I was curious how everyone's morph section sounds.  On my module,
> manually 
> morphing between waves seems to take place only between the 11 and 12
> 
> o'clock tick marks.  Heck, maybe even less range.  I was thinking
> maybe I 
> got a bad vactrol?
> 
> Anyone?
> 
> Thanks,
> Tim
> 
> 
> 


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TIm,

Not broken...just matched.

here's the thing...vactrols are slow, there's no way around that.  
You can hate it, or embrace it and I chose the second option.  But 
to get the best transfer form one waveshape to another, I match 
the two vactrol ion each board so that their decay's are close to 
kill dead spots.  What i can't do however is select them within a 
range. and depending on the range of a given set, the sweet 
spot may be a little smaller than others.  At $4 a pop, if I were to 
say I can only use vactrols on the VCO xfade which have, say, a 
2.3 ms decay time, my yield would go down appreciably.  Am I 
being cheap?  No!  Practical.  My feeling is the main function of 
the knob is to set the offset to the VC and for this it works 
excellently.  

I have compensated for the sweet spot by making the sine a bit 
louder form this output than the main sine out.  This way the 
harmonics don't grab your ears quite so quickly.

Tim - if you would like a larger range I would be happy to try out 
others for you - please don't hesitate to contact me for a warranty 
(read: no charge) replacement on this.  I want my customers 
happy! 

And foremost, thanks for the kind words on the VCO.  I've got to 
tell you - it's this kind of thing that keeps it all worth while for me.  
You have no idea what a kick I get out of these types of 
messages.  Totally appreciated, thanks again.

- P
peter@ear-group.com

















--- In PLAN_B_analog_blog@yahoogroups.com, "Tim J" 
<bob_aloha@...> wrote:
>
> I recently bought a model 15 vco... first off it sounds incredible.  
It 
> really is 'obese' as advertised.
> 
> I was curious how everyone's morph section sounds.  On my 
module, manually 
> morphing between waves seems to take place only between 
the 11 and 12 
> o'clock tick marks.  Heck, maybe even less range.  I was 
thinking maybe I 

> got a bad vactrol?
> 
> Anyone?
> 
> Thanks,
> Tim
>