[sdiy] SH-1000 clues, and anyone know knob source?

Bob Weigel sounddoctorin at imt.net
Sun May 18 23:19:25 CEST 2008


Cy of chipforbrains has them for almost 2 bucks a knob for a whole set 
of 41 (compliment for SH5)  Is there a near equiv. anyone knows of more 
in the dollar each zone?

The SH-1000 after making a time consuming study of the schematic and 
figuring out all their crappy abbreviations and nuances... I'm baffled 
as to why they did what I'm seeing here is that the vca hold and/or adsr 
switch have to be hit to enable the ADR sliders of the envelope control 
section.  So this disallows one from say setting a fixed envelope tab 
and still having EG control on the VCF which..is absurd.  WHY WHY WHY 
WHY?  I'm thinking of modifying it.

It would seem most logical that they would have made it so that if the 
vcf adsr tab is selected that it gives, regardless of what else is/is 
not hit, a vcf modulation from the eg.   The diagrams with the overall 
on two pages and having to trace wires as to what goes where.  Well I'm 
documenting it on my page as much as possible so that future people 
won't have to suffer this confusion anyway.

Who was that Roland guy who said 'learn to fix' again that Lightener 
referred to some years back?  He's PROBABLY the guy who spawned THIS 
brainchild :-)   All the ADSR switch for VCF does is connect the adsr 
amount travel to the VCF input mix.  It's an spst switch in 
implementation though all those switches have multiple connections and 
could be used for more. 

Anyway if anyone has ANY insight into why they did this I'd be most 
appreciative.  -Bob




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