[sdiy] Korg Volca Bass service manual

[Jacob Watters]

They released the schematics for the original Volcas, Monotribe, and
Monotrons. They marketed them as DIY/hacker friendly. I haven't seen anyone
do any mods on the Volca Bass or Keys.


*Jacob Watters*
JacobWatters.com <http://jacobwatters.com/>


On Fri, Oct 30, 2026 at 1:39 PM Mike Beauchamp <list at mikebeauchamp.com>
wrote:

> I wasn't expecting to see a service manual with full schematic for a
> budget synth. Pretty impressed with Korg for doing this.. do they do
> this for all of their modern synths?
>
> Mike
>
>
> On 2026-10-26 17:00, Sean Ellis via Synth-diy wrote:
> > https://cdn.hackaday.io/files/1698407266434560/korg_volca_bass_sm.pdf
> > <https://cdn.hackaday.io/files/1698407266434560/korg_volca_bass_sm.pdf>
> >
> > Not sure if this has been shared but here's the manual, as usual some
> > interesting circuits from Korg. Schmitt-trigger in the VCO and a very
> > low parts count on the VCF, not a trimpot on board! Has anyone heard one
> > of these? I'd be interested in how the filter sounds.
> >
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