[sdiy] old popular electronics schematics??

[ultrahype]

does anyone know of a source for old PE schematics?

the web site doesnt go back far enough and im looking for this old drum synth schem that they had in the early 80s 
i think it was called CABONGO or something like that 

any help?


also any info on other strange drum/percussion circuit would be great too

thanks alot

Jim Heinz
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