Akashic Guitar effects PCB lookup
CUTDRIVE

125B · 2 knobs

PCB Guitar Mania

1991 Drive

Based on the 1981 DRV

Category
Distortion· Vintage
Controls
Cut · Drive
Difficulty
Average
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

This is an exceptional, vintage, versatile, highly interactive, nuanced preamp/distortion circuit. A little gem inspired by the well-thought-out 1981 DRV, resulting in something genuinely worthwhile of attention.

Introduction

1991 Drive delivers refined open and responsive distortion and overdrive tones, all immersed in its distinct vintage aura.

Created by the pure necessity of a vintage distortion pedal able to achieve unique soundings, this circuit was crafted with a lot of consciousness, caring, and passion; and all that shows in the final result. With only three highly interactive knobs, you can find a wide variety of sounds. It has a broad range of great drive waves, from clean tone shaping or shiny drive to entirely saturated distortion tones. It can also be a fantastic dirty boost, shaping your amp to get a perfect distortion with an airy and open breakup that also tightens into more precise playing.

This board includes an internal charge pump powered by IC3 LT1054*. You can use 7660s or Max1044, among others, but you must connect the two pads under IC3 with a little solder bridge.

Controls

• Cut

• Drive

• 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.

1991 Drive – Building Docs

1991 Drive – 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 48 rows

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RefValueNormalizedTypeNotes
Resistors 20
R12m20.0022
R2100k100k
R31k1k
R42m20.0022
R5470r470
R610k10k
R72k22.2k
R81k1k
R92m20.0022
R101k1k
R11470r470
R121k1k
R131k51.5k
R1410k10k
R152m20.0022
R162m20.0022
R17470r470
R184k74.7k
R1910k10k
R2010k10k
Capacitors 18
C24u74.7u
C447u47u
C84u74.7u
C124u74.7u
C13100u100u
C1410u10u
C1510u10u
C1847u47u
C122n22n
C3390p390p
C5100n100n
C63n33.3n
C7220n220n
C93n33.3n
C1022n22n
C113n33.3n
C16100n100n
C17100n100n
Diodes 5
D01n58171N5817
D11n9141N914
D31n9141N914
D51n58171N5817
D71n58171N5817
ICs 3
IC1TL072TL072
IC2TL072TL072
IC3LT1054*LT1054
Potentiometers 2
CUT100KAA100kPotentiometer
DRIVE100KAA100kPotentiometer