[sdiy] Attempting Korg MS-20 clone as first COMPLETELY diy project... Questions

[Stewart Pye]

Hi Ed,

The 2SC945 transistors are for the VCA section. For a stand alone module 
you would normally just take the output from the IC3 buffer and leave 
out the VCA section.

I assume the a798f is a 2SA798F

The 4558 could be any 4558 op amp or many other op amps.

Regards,
Stewart.


ordeish at aol.com wrote:
>  Hi all. I have been doing projects from boards purchased, like CGS, etc. But have decided to try my hand at breadboarding my own project, the ms20 filter. I know its been done to death, but not by me, and I am on a low budget and want it myself. 
>  Anyway, the questions I have is... In the schematics it calls for the 4558. Very newby question, but I see many varieties of that chip. Which do I go for? 
>  I have already purchased the lm13600, so that is good to go.
>  It also call for a798f. For the life of me I can't find that anywhere!
>  It also shows 2 2sc945 transistors and mentions them as (selected) and says K*2. Does this mean matched? 
>  Sorry for the very newbie questions, but, I just don't know the answers, and don't know where to look!
>
> Thanks
>
> Ed
> Sent via BlackBerry from T-Mobile
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