Cgs synth

>Well I am getting my bandpass filters mounted up and runinng.
>I have rev1 boards. The freq pots works as expected, but the Q
>or bandwitdh pot seems to have little effect. I read on the list
>that you can drop the 4k7 res. inline to 2k2 or1k...anyone done
>that? I am looking for more of an "effect" from the res pot.

Yes, and it can be made to "scream". You may even need to go a little under 1k.

>also - any suggestion for a simple summer, passive or active for
>the combined output of the 3 bpf? I could use an op amp summer, but
>can I do the same with a transistor and just fly the leads n
>the jack?

Use an op-amp summer, such as that in the CGS04 DC mixer. I'm building a
module with 5 of the BPF in parallel right now, and have added such a summer
myself.

Ken
_______________________________________________________________________
Ken Stone sasami@...
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