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GAINTREBLEVOLUME

1590B · 3 knobs

Effects Layouts (blog)

Klon Centaur - True BypassVerified

Based on the Klon Centaur· 49 other boards clone it

Category
Overdrive
Controls
Gain · Treble · Volume
Build
Perfboard
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Klon, Overdrive
Open the layout at Effects Layouts (blog)

From the post

Here's the Klon again. I wanted one with board mounted pots and for a smaller enclosure. You might be able to fit this in a 1590B with low profile jacks, but it will easily fit in a 125B. It's designed for 9mm PCB mount pots, though it might be difficult to find the dual-gang Gain pot. Look for Alpha part number RD902F-40-00. I've removed a few components that were apart of the stock bypass switching for the sake of space, so you'll want to use your true bypass method of choice with this one.

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 41 rows

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Check before you build · 3 values the reader of this layout was not sure of
  • 1uF drawn as a bright yellow oval left of D1 (not a round can): taken as a tantalum or non-polar 1uF, type not stated
  • 392K and 422K resistors: printed clearly, unusual values (1% Klon values)
  • 4742 below the 10uF in the middle: read as 1N4742 (12 V zener); printed without prefix
RefValueNormalizedTypeNotes
Resistors 18
×12.2M2.2Mread from the layout by eye
×11M1Mread from the layout by eye
×1422K422kread from the layout by eye
×1392K392kread from the layout by eye
×2100K100kread from the layout by eye
×147K47kread from the layout by eye
×327K27kread from the layout by eye
×122K22kread from the layout by eye
×215K15kread from the layout by eye
×112K12kread from the layout by eye
×210K10kread from the layout by eye
×15.1K5.1kread from the layout by eye
×14.7K4.7kread from the layout by eye
×12K2kread from the layout by eye
×11.8K1.8kread from the layout by eye
×21.5K1.5kread from the layout by eye
×21K1kread from the layout by eye
×1560Ω560read from the layout by eye
Capacitors 13
×1390pF390pread from the layout by eye
×1820pF820pread from the layout by eye
×12.2nF2.2nread from the layout by eye
×13.9nF3.9nread from the layout by eye
×127nF27nread from the layout by eye
×268nF68nread from the layout by eye
×182nF82nread from the layout by eye
×3100nF100nread from the layout by eye
×1390nF390nread from the layout by eye
×11uF1udrawn as a yellow oval, not a can; read from the layout by eye
×31uF1uelectrolytic; read from the layout by eye
×410uF10uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 5
D11N34A1N34Agermanium; read from the layout by eye
D21N34A1N34Agermanium; read from the layout by eye
×21N58171N5817read from the layout by eye
×11N47421N4742 / 12Vzener, printed 4742; read from the layout by eye
×11N40011N4001read from the layout by eye
ICs 2
×2TL072TL072read from the layout by eye
×176607660charge pump; read from the layout by eye
Potentiometers 3
GainB100KB100kPotentiometerdual; read from the layout by eye
TrebleB10KB10kPotentiometerread from the layout by eye
VolumeB10KB10kPotentiometerread from the layout by eye

Other boards based on the Klon Centaur