Akashic Guitar effects circuit lookup
GAINTONESHAPEVOLUME

1590B · 4 knobs

Effects Layouts (blog)

Caroline Wave CannonVerified

Based on the Caroline Wave Cannon· 2 other boards clone it

Category
Distortion
Controls
Gain · Tone · Shape · Volume
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Caroline, Distortion

From the post

Here's a very cool Rat variant now out of production. Fairly straight forward Rat with a variation of the Ruetz Mod, LEDs for clipping and a switch to toggle a feedback loop. On the original this is a toggle (SPST), but would be fun to put on a momentary footswitch. Couldn't confirm the IC in the original, as the markings were painted over. Might be easy to assume the IC is an LM308 or OP07 since it's based on the Rat, but it's missing the compensator cap (30pF cap across pins 1-8 in a normal Rat) so I'm guessing a TL071/LM741, but an OP07 would work too. Fits nicely in a 1590B or 125B. Schematic here

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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 28 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • Havoc switch: only the wire pads Havoc 1 and Havoc 2 are shown, no switch type in the legend
RefValueNormalizedTypeNotes
Resistors 9
×31M1Mread from the layout by eye
×3100K100kread from the layout by eye
×31K1kread from the layout by eye
×110K10kread from the layout by eye
×14.7K4.7kread from the layout by eye
×12.2K2.2kread from the layout by eye
×1820Ω820read from the layout by eye
×1180Ω180read from the layout by eye
×147Ω47read from the layout by eye
Capacitors 9
×1100pF100pread from the layout by eye
×11nF1nread from the layout by eye
×210nF10none ceramic, one film; read from the layout by eye
×122nF22nread from the layout by eye
×147nF47nread from the layout by eye
×11uF1uelectrolytic; read from the layout by eye
×13.3uF3.3uelectrolytic; read from the layout by eye
×34.7uF4.7uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 1
×11N58171N5817read from the layout by eye
Transistors 1
Q12N54572N5457JFET; read from the layout by eye
ICs 1
IC1TL071TL071or similar; read from the layout by eye
Potentiometers 4
GainA100KA100kPotentiometerread from the layout by eye
ToneB50KB50kPotentiometerread from the layout by eye
ShapeB1KB1kPotentiometerread from the layout by eye
VolumeA100KA100kPotentiometerread from the layout by eye
Switches 1
Havoc??type not given; wire pads Havoc 1 and Havoc 2; read from the layout by eye
LEDs 2
D1red LEDRED LEDdiffused; legend: D1-2 diffused green/red LEDs, drawn red; read from the layout by eye
D2green LEDGREEN LEDdiffused; legend: D1-2 diffused green/red LEDs, drawn green; read from the layout by eye

Other boards based on the Caroline Wave Cannon