Cool, thanks for the tip. It already was one of my favorite filter modules.
I made an expansion module for the low-pass/bandpass modification
info here :
http://patchpierre.blogspot.com/search/label/A-127

I guess i have to expand my expansion module now...

btw... feel free to check out the rest of my blog too ;-)
Find it at http://patchpierre.blogspot.com

Greetings,
Pierre / NetPierre / PatchPierre

--- In Doepfer_a100@yahoogroups.com , Florian Anwander <fanwander@...> wrote:
>
> 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
>