Akashic Guitar effects PCB lookup
BASSGAINTREBLEVOLUME

125B · 4 knobs

PCB Guitar Mania

Whiteboard

Based on the Jext Telez White Pedal· 1 other board clones it

Category
Fuzz· Fuzz - Overdrive
Controls
Bass · Gain · Treble · Volume
Difficulty
Average
Price
€11.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

Project overview

Inspired by Jext Telez White Pedal. Designed to bring back those legendary overdrive and fuzz sounds of the late 60s commonly associated with George Harrison’s Vox amplifier.

Introduction

Let’s gather around the Whiteboard and write some tunes!

The Whiteboard was designed to bring back those legendary overdrive and fuzz sounds of the late 60s. It is based on the Vox Conqueror amp topology that was the secret weapon of bands like The Beatles and Rolling Stones when they were recording their biggest hits. When the market is filled with all sorts of pedals that you might not be sure about, you know you can at least trust the sound that sold millions of albums worldwide and made probably the same amount of girls faint.

The pedal allows you to dial in the perfect sound with minimum effort. There are only 4 knobs (VOLUME, GAIN, BASS and TREBLE) and 1 switch (VOICE) between you and the tone you’re after. The VOLUME potentiometer gives you the control over how loud the pedal is – from 0 signal, through ‘unity gain’, to pushing the amp to its limits – it’s all up to you. With the GAIN control, you can roll between a slight, sweet overdrive and crazy, wild fuzz that will make you check if your speaker is all in one piece. The EQ section is divided into BASS and TREBLE potentiometers, so you can precisely tune your tone to your liking. Just to make things more interesting, the pedal also offers a VOICE switch. With this control, you can select 1 of 3 mid-range frequencies that you want to boost, giving your tone a unique flavor.

With all that said, we already feel like we’re back in the USSR (sonically, that is). Join us there!

Controls

• Bass

• Gain

• Treble

• Volume

For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.

For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Whiteboard – Building Docs

Whiteboard – Drilling template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 51 rows

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RefValueNormalizedTypeNotes
Resistors 22
R1100k100k
R2220k220k
R318k18k
R422k22k
R520k20k
R6470r470
R7330r330
R81k1k
R910k10k
R1018k18k
R1110k10k
R1215k15k
R131k51.5k
R142k22.2k
R154k74.7k
R1647k47k
R17220r220
R18220r220
R1910k10k
R20220r220
R214k74.7k
R221m1M
Capacitors 17
C568n68n
C8100n100n
C1147n47n
C1247n47n
C13150n150n
C14100n100n
C1510n10n
C16220n220n
C110u10u
C210u10u
C347u47u
C447u47u
C610u10u
C747u47u
C910u10u
C10220u220u
C17470u470u
Diodes 1
D01n58171N5817
Transistors 7
Q1BC548**BC548
Q2BC548**BC548
Q3BC548**BC548
Q42N4125***2N4125
Q52N4125***2N4125
Q62N4125***2N4125
Q7BC548**BC548
Potentiometers 4
BASS10KAA10kPotentiometer
GAIN5KCC5kPotentiometer
TREBLE1KBB1kPotentiometer
VOLUME25KAA25kPotentiometer

Other boards based on the Jext Telez White Pedal