Werkstatt Mods
Werkstatt Mods
Here's my Werkstatt finished (sorta) with a custom jack panel. I've added a voltage follower circuit to buffer incoming gate triggers to the envelope generator. VCO EXP IN, VCF IN, KB CV OUT, and EG OUT are routed directly to the header points. VCO out is normaled through output jack back into an additional mixer circuit along with the Audio Input. This makes it possible to either route the VCO through modules and back into the filter or bypass the VCF and VCA. I think this is how Steve Dunnington designed his audio input on the werkstatt prototype. The diode clip switch bypasses an added distortion circuit inserted between the VCF and VCA. The diode clip uses a pair of diodes to ground then goes into an additional opamp circuit. Because of the positioning of the jacks, i short changed the amount of usable space on the experimenter pads.
The components are cramped together and i had to place components on both sides in order to make it all fit. In hindsight, i'm not sure if I would recommend adding the jacks to the back panel, because there's not a lot of room to spare between the PCB and the case. The right side of the case would have made more sense, but the back seemed more "moog". This was a bit of work, but completely worth the effort to make the Werkstatt part of my modular rig.
Re: Werkstatt Mods
cool - looks awesome...
would you please also provide the modified schematics?
thanks!
would you please also provide the modified schematics?
thanks!
::red
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Re: Werkstatt Mods
This is perfect! Will you be offering this service for others? If so please let me know.
Thanks,
Jamie
SynthGraphics.com
Thanks,
Jamie
SynthGraphics.com
Re: Werkstatt Mods
Really nice work and answers a question I had about the patch section: no gate input! How strange... Also, when I use the envelope from my Pittsburgh SynthBlock I just get a 'tick' not the full envelope. Is there a publish spec for the voltages of each in/out of the patch section?
Re: Werkstatt Mods
Thanks, Red, I have those. Still the question remains: voltages for the patch panel?
*EDIT* Actually, no, I did not have this manual! Thanks Red, this appears to have more info than the one in the box
*EDIT* Actually, no, I did not have this manual! Thanks Red, this appears to have more info than the one in the box
Re: Werkstatt Mods
@peff, I borrowed your Gate IN voltage follower idea. If anyone's interested, I drew up a schematic of what to do to get an external Gate IN. It's fairly simple, but you will need to cut a trace for it to work properly.
Re: Werkstatt Mods
why is a voltage follower necessary? why not simply switch internal/external gate with the jack?
::red
Re: Werkstatt Mods
I'm kind of an idiot savante with this stuff. I really want to add a few mods but need someone to spell it out for me. What I would like is to add a gate in, gate out, midi in, audio in and a permanent ground. Is there anyone who could walk me through this stuff.
Re: Werkstatt Mods
jackson five
... the most difficult part is done
... the most difficult part is done
Last edited by red on Tue Aug 29, 2017 3:46 pm, edited 1 time in total.
::red
Re: Werkstatt Mods
Werkstattumbau abgeschlossen
The five jacks are connected to VCF IN, VCO EXP IN, GATE IN, LFO IN and LFO OUT
Now it's a real funky little Moog synth
The five jacks are connected to VCF IN, VCO EXP IN, GATE IN, LFO IN and LFO OUT
Now it's a real funky little Moog synth
Last edited by red on Tue Aug 29, 2017 3:47 pm, edited 1 time in total.
::red
Re: Werkstatt Mods
How did you wired the GATE IN ?
Re: Werkstatt Mods
The GATE IN is inserted between U-14 pin 8 and C68. You have to cut the trace (marked //)...
Last edited by red on Tue Aug 29, 2017 3:48 pm, edited 1 time in total.
::red
Re: Werkstatt Mods
Thank you very much for a quick answer.
What is the difference in outcome between your solution and the op-amp mod at:
http://laurentidesynthworks.blogspot.se ... -mods.html
What is the difference in outcome between your solution and the op-amp mod at:
http://laurentidesynthworks.blogspot.se ... -mods.html
Re: Werkstatt Mods
I don't know... that's why I asked this before:
The only thing I know is that my Werkstatt is working and sounding perfectly
why is a voltage follower necessary? why not simply switch internal/external gate with the jack?
The only thing I know is that my Werkstatt is working and sounding perfectly
::red