While I don't know if it's necessary to remove the chip, its output will be fighting with the now-jumpered direct signal. I don't know who would win that fight.
Since the chip is socketed, it's pretty darned easy to pop it out. If you want to reverse the mod, you simply re-seat the chip in the empty socket.
So, to remove and audio weirdness that might possibly result from keeping the chip in there, and because it is so easy to remove or replace the chip, I'd recommend removing it.
Chip
--- In PolySix@yahoogroups.com, Frank Carvalho <dko4342@...> wrote:
>
> Worked for me too. But I was wondering. If you are jumpering the signal
> directly to output, bypassing the VCF chip, is it at all necessary to
> remove the chip?
>
> /Frank
>