[sdiy] Kobol Schematics?

Gergo Palatinszky Gergo_Palatinszky at epam.com
Fri Jul 13 08:00:16 CEST 2012


Hi,

Moreover you can use Juergen Haible's(RIP) linear detuning modification which is available for SEM VCO in the net...

Br,

Pala

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Julien Delgoulet
Sent: Friday, July 13, 2012 7:03 AM
To: Dave Manley
Cc: Synth DIY List
Subject: Re: [sdiy] Kobol Schematics?

Here comes a french ;-)
So James, what you would like to do ?
If you are looking for the schematics for some DIY, may be you don't need the whole schematics ...
Here are my tought:
Basically, the interesting part of the kobol is its VCO (env and filter are ssm based) According to Mark Verbos, the VCO is a ripoff of an oberheim SEM with a UA726 for the expo. So you might use the original SEM VCO design which uses CA3046.
Now the interresting part is the waveshaper... and a NICE person (Mark Verbos) decided to share his redrawn schematic here :
http://www.simple-answer.com/kobolws.pdf

There is also his redraw of the VCO core : 
http://www.simple-answer.com/kobolosc.pdf

From that you could start building the VCO ...

Also from this page of the schematics (http://www.univertron.com/SAS/manuals/RSF/Kobol%20Expander%20Schematics/4.jpg) , this picture (http://www.flickr.com/photos/roginator1/5227283469/in/photostream/) and the BOM which is also in the bad scans you might end up with the correct values for resistors and stuff...

Hope it helps ...

Julien



Le 13 juil. 2012 à 01:41, Dave Manley <dlmanley at sonic.net> a écrit :

> Ahhh...the Brits and the French BFF.
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy

_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy


More information about the Synth-diy mailing list