Akashic Guitar effects circuit lookup
BALLSSHIFTTONELEVEL

Enclosure not stated · 4 knobs

Tagboard Effects

Pink Jimi Photon's Transmission ODVerified

Based on the Pink Jimi Photon's Transmission OD

Category
Overdrive
Controls
Balls · Shift · Tone · Level
Build
Vero· 16×10· 8 cuts, 2 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Overdrive, PJP

From the post

Incorporating couple of cool ideas, here' one from the man, Pink Jimi Photon. Note that the master volume control is optional and anything smaller than 1M will probably hurt the output level. The level should be within reasonable limits without it.

Here's the original description:

Positive it's been done a gazillion times before. but one little twist... i added a simple control to be able to "pan" between the two clippers... one made with 1n4001's (slower clipping for the lows) and one with 1n4148's (faster clipping for the highs)... it works, kinda sorta.. it's more noticeable at some settings than others, it's mostly useful for dialing in "touch sensitivity"..

the tone control is what it is, fairly simple and crude... but for one freekin' transistor, it actually works pretty well!! at least i think it does..

i didn't put a master volume on it. you just crank up the gain to where ya want it. unity gain is about 8:00, above that it just kinda gets more saturated (and a bit louder)...

how does it sound? kinda like a tube screamer. ::) which wasn't what i really expected at all... it's a kinda nasal middy overdrive, cleanish, but enough to bump an amp into a really nice natural overdrive sound.

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 23 rows

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RefValueNormalizedTypeNotes
Resistors 5
×11M1Mread from the layout by eye
×1470Ω470read from the layout by eye
×110K10kread from the layout by eye
×139K39kread from the layout by eye
×122K22kread from the layout by eye
Capacitors 6
×322nF22nread from the layout by eye
×1100nF100nread from the layout by eye
×1220pF220pread from the layout by eye
×1470pF470pread from the layout by eye
×147uF47uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 6
D11N40011N4001read from the layout by eye
D21N40011N4001read from the layout by eye
D31N41481N4148read from the layout by eye
D41N41481N4148read from the layout by eye
D51N41481N4148read from the layout by eye
D61N40011N4001read from the layout by eye
Transistors 1
×1BC547BC547read from the layout by eye
Potentiometers 4
BallsB1MB1MPotentiometerread from the layout by eye
ShiftB10KB10kPotentiometerread from the layout by eye
ToneB1MB1MPotentiometerread from the layout by eye
LevelC1MC1MPotentiometeroptional; read from the layout by eye
Trimmers 1
×1500K500kread from the layout by eye