Polytonal synthstick

[skoster]

Hi there, I haven't been doing any DIY electronics for quite a while since I'm currently in grad school, but while I was researching ideas for an electro-skiffle band I hope to form I ran across this:

http://www.geocities.com/tpe123/folk...ynthstick.html

and I thought it sounded like a fun, quick project.

I'd like to adapt it to polytonal use by using three or four synthsticks and then mixing the outputs together. I was considering just throwing together a quick mixing circuit using a resistor on the output of each synthstick circuit and tying them together to form one input into an amplifier (tying the grounds together as well, of course).

But it occurs to me that I might have a couple of problems:

1. The attenuation introduced by the passive mixer circuit into an already pretty low level signal might not allow it to drive an amp (I figure I can fix this by following the mixer with a single transistor amplification stage).

2. More importantly, if more than one synthstick is playing a note then I would have a higher volume than if only one of them was playing a note, is this correct? I'd like to keep at least a modicum of uniformity of volume.

So, my questions are:

1. Are the problems I foresee actual problems, or am I missing something?

2. If they are problems, what is the most reasonable way of handling them?

3. What problems am I missing?

Thanks!

[skoster]

Nevermind, I figured it out I think.