Akashic Guitar effects circuit lookup
CALIBRATERANGESCANSIGNAL

Enclosure not stated · 4 knobs

Tagboard Effects

Spaceman Sputnik IIVerified

Based on the Spaceman Effects Sputnik II· 3 other boards clone it

Category
Fuzz
Controls
Calibrate · Range · Scan · Signal
Difficulty
Difficult
Build
Vero· 24×21· 46 cuts, 17 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Fuzz, Spaceman, Sputnik

From the post

"Starting with the same germanium transistors as the much-loved original Sputnik, but with slightly different specs, we added a few slight tweaks to get very close to the sonic details of the original circuit. Many of the other parts in the Sputnik II are different but of same or similar value, including many vintage and rare parts.

While extremely similar to the original, the Sputnik II is a beast all its own. The Sputnik II takes everything we loved about the original, and adds in the things we dreamed of after its original release it:

• Full-size control knobs for every parameter
• Foot-switchable DRIFT mode, with its own status indicator
• Additional FILTER options for maximum tone-shaping
• Additional circuitry making it more friendly to active pickups, buffers, synths, pedals, etc

Within Sputnik II lies a plethora of fuzz tones. Smooth, gritty, vintage, modern, thick, thin, buzzy, bassy, splatty, sputtery, noisy, buttery, controlled or very much out-of-control. A truly endless cornucopia of fuzz."

Here is another pedal reverse-engineered by Dino (Digi2t).

He also added an extra diode reverse switch.

For all infos on how to build this pedal you can find Dino's original thread (with his own vero) and schematic on the DIY forum here.

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 48 rows

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Check before you build · 4 values the reader of this layout was not sure of
  • 5n red cap at the top of the board, right of Q3: printed clearly, unusual value
  • 499K and 475K resistors: printed clearly, unusual (1% series) values
  • 4u7 at the top centre next to D2 is drawn as a red oval like the small ceramics, not as a can; could be tantalum, no type given
  • Transistor types BS250 / 3904 / BS170 / BS170 / 2SK30 are assigned from the labels under the board by position; the drawing gives them no designators
RefValueNormalizedTypeNotes
Resistors 15
×31K1kread from the layout by eye
×23K63.6kread from the layout by eye
×13K93.9kread from the layout by eye
×310K10kread from the layout by eye
×120K20kread from the layout by eye
×122K22kread from the layout by eye
×127K27kread from the layout by eye
×147K47kread from the layout by eye
×162K62kread from the layout by eye
×1100K100kread from the layout by eye
×1220K220kread from the layout by eye
×2475K475kread from the layout by eye
×1499K499kread from the layout by eye
×11M1Mread from the layout by eye
×12M72.7Mread from the layout by eye
Capacitors 13
×1270p270pread from the layout by eye
×15n5nread from the layout by eye
×210n10nread from the layout by eye
×212n12nread from the layout by eye
×115n15nread from the layout by eye
×118n18nread from the layout by eye
×122n22nread from the layout by eye
×139n39nread from the layout by eye
×2100n100nread from the layout by eye
×1220n220nread from the layout by eye
×2330n330nread from the layout by eye
×14u74.7uread from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
Diodes 2
D1Ge diodeGE DIODEGe Diode (Test); read from the layout by eye
×21N41481N4148D2, D3; read from the layout by eye
Transistors 7
Q12SB1722SB172Ge PNP (2SB172, ...); original hFE 72; read from the layout by eye
Q22SB1722SB172Ge PNP (2SB172, ...); original hFE 82; read from the layout by eye
Q32SB1722SB172Ge PNP (2SB172, ...); original hFE 80; read from the layout by eye
×1BS250BS250MOSFET; read from the layout by eye
×12N39042N3904printed 3904; read from the layout by eye
×2BS170BS170MOSFET; read from the layout by eye
×12SK302SK30JFET; read from the layout by eye
Inductors 1
×2Ferrite beadFERRITE BEADF.B.; read from the layout by eye
Transformers 1
×142TL01942TL019read from the layout by eye
Potentiometers 4
CalibrateB100KB100kPotentiometerread from the layout by eye
RangeB100KB100kPotentiometerread from the layout by eye
ScanB100KB100kPotentiometerread from the layout by eye
SignalA100KA100kPotentiometerread from the layout by eye
Trimmers 1
×225K25kread from the layout by eye
Switches 4
High FilterDPDT on/off/onDPDT ON/OFF/ONSwitch 1, toggle; read from the layout by eye
Low FilterSPDT on/off/onSPDT ON/OFF/ONSwitch 2, toggle; read from the layout by eye
D.P.S.DPDTDPDTSwitch 4; read from the layout by eye
Drift3PDT3PDTSwitch 5; read from the layout by eye

Other boards based on the Spaceman Effects Sputnik II