Akashic Guitar effects PCB lookup
GAINTREBLEVOLBASSMIDPRES

125B · 6 knobs

PCB Guitar Mania

Dirty Freeman

Based on the Friedman’s Dirty Shirley

Category
Distortion· Distortion, Overdrives, Pre-amp
Controls
Gain · Treble · Vol · Bass · Mid · Pres
Price
€9.90out 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

The Dirty Freeman overdrive pedal crams all the British-style grit, supple touch sensitivity, and tonal flexibility of its namesake all-tube amplifier head into a pedalboard-friendly enclosure. It includes a tight switch to reign in your amp’s low end when being pushed.

Introduction

• This board has been designed for on-board pots and switches and keeps your project tidy without long cables around.

• Works using four TL072.

• Internal Trimpot to set the max amount of gain at taste.

• Fits on a 125B enclosure with top-mounted jacks.

If you like this pedal, we recommend taking a look at our Freeman Unchained. This new launch is inspired by the BE-OD Deluxe, a dual pedal that features the BE-OD and Friedman’s Dirty Shirley together, unleashing the full potential of the Friedman brand in a single board.

Controls

• Gain

• Treble

• Vol

• Bass

• Mid

• Pres

• Trim

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.

Dirty Freeman – Building Docs v2

Dirty Freeman – Building Docs

Dirty Freeman – Drilling Templates

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 77 rows

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RefValueNormalizedTypeNotes
Resistors 34
R11m1M
R2330k330k
R310k10k
R422k22k
R539k39k
R622k22k
R710k10k
R822k22k
R922k22k
R1022k22k
R1122k22k
R12220k220k
R1327k27k
R1410k10k
R152k22.2k
R1633k33k
R1733k33k
R182k22.2k
R19470k470k
R202k22.2k
R2122k22k
R222k22.2k
R23100k100k
R243k33.3k
R2518k18k
R263k93.9k
R3010r10
R3110k10k
R3220k20k
R3322k22k
R342k22.2k
R3520k20k
R3622k22k
R372k22.2k
Capacitors 22
C122n22n
C247p47p
C310n10n
C41n1n
C5100n100n
C647p47p
C747n47n
C8120p120p
C9220p220p
C1010n10n
C114n74.7n
C1222n22n
C13220n220n
C142n22.2n
C1510n10n
C16220n220n
C20100u100uelec
C23100n100n
C25100n100n
C2622u22uelec
C27100n100n
C2822u22uelec
Diodes 5
D11n41481N4148
D21n41481N4148
D31n41481N4148
D41n41481N4148
D91n58171N5817
ICs 4
IC1TL072TL072
IC2TL072TL072
IC3TL072TL072
IC4TL072TL072
Potentiometers 6
GAIN1MAA1MPotentiometer
TREBLE100KBB100kPotentiometer
VOL50KAA50kPotentiometer
BASS100KCC100kPotentiometer
MID100KCC100kPotentiometer
PRES10KCC10kPotentiometer
Trimmers 1
TRIM100K100kTrimmer
Switches 1
SW1SPDTSPDT
LEDs 4
LED1LEDLED
LED2LEDLED
LED3LEDLED
LED4LEDLED