Akashic Guitar effects circuit lookup
DISTORTIONVOLUME

1590B · 2 knobs

Effects Layouts (blog)

MXR Distortion +Verified

Based on the MXR Distortion+· 22 other boards clone it

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

From the post

The classic '70s overdrive by MXR, and is essentially the same as the DOD 250 and Ross Distortion. I designed the layout to have onboard pots, to alleviate some offboard wiring. It also has the LED resistor on the board, again to reduce offboard wiring a bit.

It'll fit perfectly in a 1590B enclosure. Might be a good idea to socket the diodes. The original had germanium diodes, but silicon diodes or LEDs will sound good as well (just different).

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 15 rows

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RefValueNormalizedTypeNotes
Resistors 5
×41M1Mread from the layout by eye
×210K10kread from the layout by eye
×14.7K4.7kread from the layout by eye
×12.2K2.2kread from the layout by eye
×11.5M1.5Mread from the layout by eye
Capacitors 4
×41uF1utantalum per legend; two drawn as tantalum beads, two as film boxes; read from the layout by eye
×110uF10udrawn as a box capacitor; read from the layout by eye
×147nF47nread from the layout by eye
×110pF10pread from the layout by eye
Diodes 3
D11N34A1N34Alegend: 1N34a, 1N914, etc; read from the layout by eye
D21N34A1N34Alegend: 1N34a, 1N914, etc; read from the layout by eye
×11N40011N4001printed 4001; read from the layout by eye
ICs 1
IC1LM741LM741read from the layout by eye
Potentiometers 2
DistortionC500KC500kPotentiometerprinted 500K Rev log; read from the layout by eye
VolumeA100KA100kPotentiometerprinted 100K Log; read from the layout by eye

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