[sdiy] CV questions..hardwiring

[Dan Snazelle]

I am building something that has HARDWIRED routing. my knowledge of impedance and signal routing is very poor.

SO

i have 2 questions. 
let'S say this synth has a bunch of sections just like on a modular or any other synth.
and let's say the the "blocks" or sections (vco/vcf/etc)

have summers at their inputs. (and outputs too)

now lets say i want to take a CV OUTPUT of one section(say i the triangle out of an LFO)

I am wondering if i can solder that out wire to 2 or 3  CV INS of other sections  without getting crosstalk. i was hoping that since the input and outputs are already buffered that i wouldnt need another summer somewhere. on the breadboard it seemed to work. and obviously in the modular world by using multiples we send signals to many different places at once all the time (i am not talking about 1/v oct signals either)

(keep in mind this project is NOT keyboard based. crazy sounds are
ok.the only thing not ok is damaging the equipment or hum...)




NOW

here is my other question
and it's related

DO cv signals that you want to send somewhere always need to be summed?

or can you just tie them together with 100k resistors on an input that is already going into a summer.

let me rephrase that.


lets say for example the VCLFO only has ONE cv input. that cv in DOES go into an inverting opamp.

BUT lets say (and this is really what I DO want to do) i want to be able to send up to 5 cv signals into the VCLFO. COULD i just tie them together with equal value resistors and stick the result of that into the CV IN?
or do i HAVE to add a second opamp?

chances are, there wont always be 5 signals at once.

i have tried it on the breadboard (a few months back) and while it wasnt perfect it did seem to work.
i just want to make sure i wont damage the circuit.


Luckily on the asm2 board...some of the sections HAVE 4 or 5 cv ins. but some only have one. and my etched boards only have one or two. and i am trying to avoid having to add more opamps all over the place.


SO ANY ADVICE ON EITHER QUESTION IS SUPER!!

i have learned so much from this list in such a short time

thanks