Love veroboard, its old school and if you got some handy you can start building right away, but on this build with 12 transistors a voltage reg and 16 - pin chip? Not in a hurry to do another one!!!
This is an original circuit btw 10 transistor buffers to guarantee complete isolation in all the controls, plus add a certain analog vibe to the sound, plus two transistor gain stages, one silicon (up front) and one germanium in the feedback loop to add even more old school vibe to the princeton delay chip...
Next up, found this schematic and thought it looked good...and it is, real nice and warm if somewhat predictable...
it also runs off a dual polarity supply somewhat unnecessarily complicating matters...
point-to point wiring on this build too
FInally got inspired to try a madbean circuit the infamous cave dweller... amazing how good it sounds considering
there is no further op-amps or transistors in the signal stage, it makes use of the onboard op-amps of the princeton chip,
yet at the expense of some bleed between the feedback/echo control and the dwell... I wasnt that excited by the circuit as is...sounds pretty much like you expect a delay pedal to sound like so spent a few evenings tweaking and without doing too much to the circuit, boosted the gain in the feedback loop and added a LP filter and a LF 3- stage toggle so you can really get this thing humming and control the osc simply by tweaking the eq in the feedback - renaming it the dub dweller, turns this thing into a dubby bliss stoner rock monster...
