Korg35 Experts

[Tony Hardie-Bick]

On 24/07/14 22:17, foRUMS 4 punkdISCO wrote:
> Would it be easy to stop within a preset which part of the circuit is
> doing the Res? For example, on page 6, the 8' Saw is a patch with a
> lot of resonance (either IC12 or IC9; not sure which).
>
> http://www.synfo.nl/servicemanuals/Korg/KP-30_SERVICE_MANUAL.pdf

they're using the korg35 in more minimalist fashion, compared to the
ms10/20. this is a pure sallen-key configuration:

https://en.wikipedia.org/wiki/Sallen%E2%80%93Key_topology (see fig 3)

c38 and c39 around ic12 have a different ratio from c31 and c32 at ic9,
and this is how different resonance for each voice is achieved

i can imagine adjusting the circuit somehow to change the resonance
continuously, but you're looking at cutting tracks and changing
the topology, adding an op-amp etc, so nothing simple

beautiful design of circuit, speaks of a real intensity and
determination to bring amazing sounds to the world

t.