[sdiy] Juno 106's 80017A structure

[mark verbos]

Welcome Sergio!

It will be very interesting to see what is in fact inside those, and how 
it is connected.

On the filter, there is this http://www.synth.clara.net/images/IR3109VCF.gif

It appears to be an IC version of the 3080 filter Roland used in the 700 
or the BA662 4 pole that's in the 100m.

Mark



sergio koval wrote:

> Hi to all...
>
> My name is Sergio and I live in Barcelona (Spain).
> This is my first post to the list... and sorry about my
> poor english.
>
> Recently, I made an archeological work by opening
> an 80017A hibrid pack of an Juno 106, and inside it
> I found two BA662 and one IR3109 chips (in SMD
> format, of course).
>
> I know that the BA662 can be partially replaced
> with an CA3080... but I ignore if there are any
> replacement (even on discrete mounting) for
> the IR3109 filter chip.
>
> There are any info about it ?
>
> And, my next step will be to read the conecctions
> between those 3 chips... then, if you knows that
> somebody had made this diagram, please, tell me.
>
> Very thankful...
>
> Sergio
>
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