[sdiy] Simple VCO: 4069 or 7555

[Dave Magnuson]

Hi List,

After playing with my SH-101 for a while, my 7 year old daughter decided
she wants a monosynth.  Err, umm, actually, after playing my SH-101, I
decided I WANT IT BACK, so I'm building her a monosynth to keep her
occupied so I can go steal it!

I have enough left over circuits here to build almost the entire project
already (LFOs, EGs, VCFs, VCAs).  The only thing I'm lacking is a VCO.  I'd
like to keep this VERY simple, and scalability isn't too important (I can
build a better VCO later if it ever becomes an issue).  I'd like maybe 2 or
3 octaves of range, so I'm thinking of trying the 7555 or 4069 based VCOs
that we've been discussing lately. 

What are people's opinions of the SOUND of these two oscillators?  I know
Scott G has heard both for sure... anyone else want to say which design
they think *sounds* better?  I'd prefer to build the VCO with the most
"character".  I know this is a very subjective matter, but...

Thanks!!!

Dave Magnuson

Resonant Frequency:
resfreq at hoohahrecords.com
http://www.hoohahrecords.com/resfreq/index.html