Intro
THE PENFOLD BOOK
Errata: There is one coloured diagram, the VCO, the original circuit is in black, an aftermarket mod to give saw and pulse instead is in blue. Two of the sequencer overlays are incorrectly labelled as each other, but it's pretty obvious which is which when you look at them
Not all the figures mentioned in the text show up in the pages however all the figures are in the "Text and .GIF images" zip file.