[sdiy] adding multiple signal/cv inputs: SSM2044

[Dan Snazelle]

using this schematic

http://modular.fonik.de/pdf/SSM2044small.pdf

i would like to be able to add a total of 4 audio ins (each with a pot to control its volume)
and 4 cv ins.

i was under the impression i could just add more 100k resistors to opamp U2 for more CV ins.
as far as the extra audio ins...could i just put an opamp summer (with a 100k pot for each input instead of the fixed 100k resistor) before pin the 10uf cap on pin 1 of the ssm2044??

any help would be greatly appreciated.

in a sense i am basically trying to make the summer before the filter my "audio mixer" and the filter is the last state in the hardwired synth before the vca

does that makes sense?

or would it be best just to build an opamp mixer as a seperate unit and plug that into the audio input he already has in place?