success!
 
to answer my own question:
 
connecting the SH7 'pedal vcf input' to the VAC
output of the A101-9 Universal Vactrol module worked fine!
 
now the vcf frequency is controlled by this vactrol,
who is in turn controlled by its own cv input on the A101-9.
so, i also have build in 'growl' response... due to
the vactrol's own time lag...
 
but, i am still waiting, from someone on this list,
to confirm that it is safe to connect it that way and that i will not damage the
SH7 or the modular.
 
thanks,
Bakis.

--- On Sun, 8/7/11, Bakis Sirros < synth_freak_2000@... > wrote:

From: Bakis Sirros < synth_freak_2000@... >
Subject: using the SH-7 with the A101-9 Universal Vactrol module...
To: "Doepfer_a100 group" < doepfer_a100@yahoogroups.com >
Date: Sunday, August 7, 2011, 11:58 AM

hi all,
  
the important (and relevant to Doepfer A100) question:
 
since it looks like (to my ignorant eyes) that the SH7 
'pedal vcf input' (seems to be powered) works like a simple variable resistor (i guess that i can
simply connect a variable resistor to this input to change the filter cutoff),
could i use the Doepfer A101-9 Universal Vactrol module, to
operate the SH7 filter without any modification to the synth (using the 'vac
out' connected to the SH7 'pedal vcf input')
 
here is the link to that module:
http://www.doepfer.de/A1019.htm

here is a link to the SH7 service manual (thanks
CEM3374 !) :

http://www.cem3374.com/docs/Manuals/Roland/SH-7_SM.pdf




(check page 24 and the vcf circuit page, to see how
the pedal input is...)

if this cannot be done, any help on converting the SH7 pedal vcf input to a regular cv input


many thanks in advance for your help!
 
best regards,     :-)
Bakis.
 

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

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