[sdiy] help finding roland filter schematics?

[Louis van Dompselaar]

>>

What I find interesting in the link below is that it lists the SH-3A  
filter as
a diode ladder (and even includes a schematic for that), when the  
SH-3A actually
has a transistor ladder.  It's clearly a traditional Moog transistor  
ladder in
the Service Notes, which I have verified against the actual SH-3A I  
have here.

And the Service Notes list the transistor ladder in all revisions, so  
Roland aren't
hiding it in any way.  Not sure where the diode-ladder versions comes  
from, but
I'm sure it's not the SH-3A.


>> i found this CHART which lists which of the roland filters use  
>> regular OTA's.
>> http://fa.utfs.org/diy/roland_filters/index.html