How about a switch Dieter
2011/3/27 Florian Anwander <
fanwander@...
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>
>
> Hi,
>
> If you own an A-127, then you that it can be changed from band pass to
> low pass with internal jumpers.
>
> Now: If you have an A-127 Version 3 (the version is written on the
> pcbs), then it is also possible to get a high pass signal too. You
> simply have to feed pin 14 of IC1 to the center pin of the selection
> jumper; you can pick this signal at the right side of R15, which is the
> resistor direct aside the unused trimmer P8. One cable nothing else!
>
> Btw: the A127 is a hidden gem as it provides in fact three SEM filters!
>
> Florian
>
>
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