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GAINTREBLEVOLUME

1590B · 3 knobs

Effects Layouts (blog)

Klon CentaurVerified

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) Madbean'sKingslayerLinked in the post (freestompboxes.org)

From the post

Don't want to spend two grand on an original? Yeah, me neither. Regarded as one of the best overdrives of all time, the Klon Centaur seems to be something that every guitarist wants on their board. This one's not going to fit in a 1590B (if you want that, check out Madbean's Kingslayer), but you might have enough room in a 125B if you turn the board sideways. This layout follows the original Centaur with buffered bypass (using a DPDT footswitch). If you want to wire it for true bypass, ignore the footswitch wiring pads, and eliminate the 4.7µ cap, 560Ω and 100k resistors on the lower right side of the board near the input. Schematic and more info can be found here.

UPDATE:

For those confused by the footswitch wiring for non-true bypass, here's a wiring diagram for reference.

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 39 rows

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Check before you build · 2 values the reader of this layout was not sure of
  • 1uF yellow drop-shaped capacitor at column U, rows C-D (top centre): drawn non-electrolytic, entered as tantalum from the drawing style; the type is not stated
  • 392K (row E) and 422K (column Y): printed clearly, unusual values
RefValueNormalizedTypeNotes
Resistors 18
×3100K100kread from the layout by eye
×327K27kread from the layout by eye
×2560Ω560read from the layout by eye
×21.5K1.5kread from the layout by eye
×21K1kread from the layout by eye
×215K15kread from the layout by eye
×210K10kread from the layout by eye
×14.7K4.7kread from the layout by eye
×11.8K1.8kread from the layout by eye
×1392K392kread from the layout by eye
×147K47kread from the layout by eye
×122K22kread from the layout by eye
×112K12kread from the layout by eye
×15.1K5.1kread from the layout by eye
×12K2kread from the layout by eye
×1422K422kread from the layout by eye
×11M1Mread from the layout by eye
×12M2Mread 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
×2100nF100nread from the layout by eye
×1390nF390nread from the layout by eye
×11uF1utantalum; read from the layout by eye
×61uF1uelectrolytic; read from the layout by eye
×24.7uF4.7uelectrolytic; read from the layout by eye
×247uF47uelectrolytic; read from the layout by eye
Diodes 3
×21N34A1N34Agermanium; read from the layout by eye
×31N58171N5817read from the layout by eye
×11N47421N4742 / 12Vzener, printed 4742; read from the layout by eye
ICs 2
×2TL072TL072read from the layout by eye
×17660/10447660 / TC1044charge 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