[sdiy] Sourcing a 2.5 Meg reverse log potentiometer (Moog Prodigy)

[The Laboratory of Sound]

On 2013-10-18 10:48, Florian Anwander wrote:
> I still don't understand, why he does not simply adopt the capacitor
> to the existing potentiometer, to get the original speed (C21 in the
> earlier or C24 in the later version). If he has an working
> potentiometer with 100k, which suits the knob, then he simply has to
> increase the cap value to 68uF and he is done.

I should have mentioned that the 100K pot seems of not so good quality 
(plastic casing). A Moog Prodigy deserves better than that :) Maarten 
pointed me in the right direction. The 3Meg pot works like a charm and 
has a nice feel in the Prodigy, comparable to the synth's other pots.
The C21/C24 cap is a 2.7 uF precision film cap, also not that easy to 
source in a 68 uF version and cost wise probably the same if not more 
expensive than a new pot.

Thanks everybody for your kind input. I still have a lot to learn, and 
this helps a lot.

Cheers,

Jack

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