Akashic Guitar effects circuit lookup
FEEDBACKMIXDELAY

Enclosure not stated · 3 knobs

Tagboard Effects

Madbean Cave Dweller (2015)Verified

Based on the Madbean Cave Dweller (2015)

Category
Delay
Controls
Feedback · Mix · Delay
Difficulty
Medium
Build
Vero· 19×17· 28 cuts, 10 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Delay, Madbean

From the post

Here is the newer version of the Cave Dweller.

You can find Brian's original project here.

Original info:

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The Cave Dweller 2015is a total re-design of the Cave Dweller project from 2012.

While the original Cave Dweller was a simple and colorful sounding delay it had a few drawbacks;

it was pretty lo-fi, and darkened the dry guitar tone somewhat. This was due to the limitation of using only the PT2399 for both dry signal and delay signal processing. The objectives for the re-design were to improve the quality of delay and dry guitar signal without requiring as many parts as a full-fledged delay circuit such as the MBP ZP Micro. This is accomplished by introducing a new input stage for dry signal processing and also by adding additional filtering to the delay signal. The result remains fairly low in parts count without compromising on the delay tone.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 25 rows

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RefValueNormalizedTypeNotes
Resistors 9
×21M1Mread from the layout by eye
×21K1kread from the layout by eye
×34K74.7kread from the layout by eye
×310K10kread from the layout by eye
×222K22kread from the layout by eye
×118K18kread from the layout by eye
×115K15kread from the layout by eye
×12K2kread from the layout by eye
×11K51.5kread from the layout by eye
Capacitors 7
×12100n100nread from the layout by eye
×247n47nread from the layout by eye
×110n10nread from the layout by eye
×22n22.2nread from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
×210u10uelectrolytic; read from the layout by eye
×11u1uelectrolytic; read from the layout by eye
Diodes 1
D21N58171N5817read from the layout by eye
Transistors 1
×12N54572N5457JFET, printed 5457; read from the layout by eye
ICs 2
×1PT2399PT2399printed 2399; read from the layout by eye
×178057805regulator; read from the layout by eye
Potentiometers 3
FeedbackB50KB50kPotentiometerread from the layout by eye
MixB50KB50kPotentiometerread from the layout by eye
DelayB50KB50kPotentiometerread from the layout by eye
Trimmers 1
×150K50kJFET bias, around 6V; read from the layout by eye
LEDs 1
D15mm diffused green5MM DIFFUSED GREENon board; read from the layout by eye