Akashic Guitar effects PCB lookup
VOLUMEDRIVETREBLEBASS

125B · 4 knobs

PedalPCB· PCB554

Obtuse Boost

Based on the Fulltone FB-2 Fat Boost

Category
Boost
Controls
Volume · Drive · Treble · Bass
Price
$10.00in stock
Tags
125B
Buy the PCB at PedalPCB Build document8/15/23

From the vendor

Controls

• Volume

• Drive

• Treble

• Bass

Specifications

• Designed for a 125B enclosure with top-mounted jacks

Documentation

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 32 rows

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RefValueNormalizedTypeNotes
Resistors 10
R168K68kResistor, 1/4W
R21M1MResistor, 1/4W
R41M1MResistor, 1/4W
R510K10kResistor, 1/4W
R6220R220Resistor, 1/4W
R710K10kResistor, 1/4W
R81M1MResistor, 1/4W
R100100K100kResistor, 1/4W
R101100K100kResistor, 1/4W
CLR4K74.7kResistor, 1/4W* LED current limiting resistor
Capacitors 12
C110p10pCeramic capacitor
C23n3nFilm capacitor, 7.2 x 2.5mm
C310u10uElectrolytic capacitor, 5mm
C41u1uElectrolytic capacitor, 5mm� Non-polarized
C51n1nFilm capacitor, 7.2 x 2.5mm
C647n47nFilm capacitor, 7.2 x 2.5mm
C730n30nFilm capacitor, 7.2 x 2.5mm
C822n22nFilm capacitor, 7.2 x 2.5mm
C91u1uElectrolytic capacitor, 5mm� Non-polarized
C100100u100uElectrolytic capacitor, 5mm
C101100n100nFilm capacitor, 7.2 x 2.5mm
C10210u10uElectrolytic capacitor, 5mm
Diodes 1
D1001N58171N5817Schottky diode, DO-41
Transistors 4
Q12N54572N5457JFET transistor, N-channel
Q22N54572N5457JFET transistor, N-channel
Q32N54572N5457JFET transistor, N-channel
Q42N54572N5457JFET transistor, N-channel
Potentiometers 4
VOLUMEA1MA1M16mm right-angle PCB mount pot
DRIVEB10KB10k16mm right-angle PCB mount pot
TREBLEA100KA100k16mm right-angle PCB mount pot
BASSB25KB25k16mm right-angle PCB mount pot
Trimmers 1
BIAS50K50kTrimmer potentiometer, 3362P type