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GAINTONEVOLUME

1590B · 3 knobs

Tagboard Effects

Klon CentaurVerified

Based on the Klon Centaur· 49 other boards clone it

Category
Overdrive
Controls
Gain · Tone · Volume
Build
Vero· 21×26· 32 cuts, 14 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Charge pump, Klon, Overdrive
Open the layout at Tagboard Effects SchematicThat layout

From the post

[Updated 4th July 2014 - correction to treble control resistors]

Note: A new revision of the Klon layout has been done which is smaller and makes better use of the space, so if you want to build this I'd suggest using that layout instead which will also be easier to fit in a 1590B for those wanting to use a smaller box.

Based on Madbean's Sunking schematic. At 21 x 26 it at least has the potential to fit in a 1590B, so I'll be really impressed if someone can manage that, especially with the dual gang pot. Don't forget to sprinkle fairy dust over the diodes.

Video of Geiri's build:

True bypass version:

(kit is for the original buffered bypass version)

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 41 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • D1 and D2: no single type given; legend says they are 'magic' germanium diodes and that OA91 and 1N277 measured close
RefValueNormalizedTypeNotes
Resistors 18
×2560R560read from the layout by eye
×21K1kread from the layout by eye
×21K51.5kread from the layout by eye
×11K81.8kread from the layout by eye
×12K2kread from the layout by eye
×24K74.7kread from the layout by eye
×15K15.1kread from the layout by eye
×210K10kread from the layout by eye
×112K12kread from the layout by eye
×215K15kread from the layout by eye
×122K22kread from the layout by eye
×327K27kread from the layout by eye
×147K47kread from the layout by eye
×268K68kread from the layout by eye
×4100K100kread from the layout by eye
×1392K392kread from the layout by eye
×1422K422kread from the layout by eye
×21M1Mread from the layout by eye
Capacitors 12
×1390p390pread from the layout by eye
×1820p820pread from the layout by eye
×12n22.2nread from the layout by eye
×13n93.9nread from the layout by eye
×127n27nread from the layout by eye
×268n68nread from the layout by eye
×182n82nread from the layout by eye
×2100n100nread from the layout by eye
×1390n390nread from the layout by eye
×71u1uelectrolytic; read from the layout by eye
×24u74.7uelectrolytic; read from the layout by eye
×247u47uelectrolytic; read from the layout by eye
Diodes 5
D1OA91OA91germanium; legend: 'magic (OA91 and 1N277 were very close in measured forward voltage)'; read from the layout by eye
D2OA91OA91germanium; legend: 'magic (OA91 and 1N277 were very close in measured forward voltage)'; read from the layout by eye
D31N47421N4742 / 12Vzener; read from the layout by eye
D41N40011N4001legend: 1N5817 will get closer to 18V; read from the layout by eye
D51N40011N4001legend: 1N5817 will get closer to 18V; read from the layout by eye
ICs 3
IC1TL072TL072read from the layout by eye
IC2TL072TL072read from the layout by eye
IC3ICL7660SCPAICL7660SCPAread from the layout by eye
Potentiometers 3
GainB100KB100kPotentiometerdual; read from the layout by eye
ToneB10KB10kPotentiometerread from the layout by eye
VolumeB10KB10kPotentiometerread from the layout by eye

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