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BASSGAINPRESENCETREBLEVOLUME

125B · 5 knobs

PCB Guitar Mania

Twin Tweed 57

Based on the Fender Twin Tweed amp

Category
Overdrive· Pre amp Emulator
Controls
Bass · Gain · Presence · Treble · Volume
Difficulty
Average
Price
€11.90out of stock
Tags
diy-originals

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 Twin Tweed 57 emulates part of a series of preamps in a box, emulating the tone of some of the most iconic amplifiers.

For this occasion, we have not only the preamp section, but we have also included the tone stack and the power section of this all-time classic.

Introduction

Not just a good preamp. It’s probably THE Fender Tweed 57 you hearing in your head when you are thinking about sparkling clean sounds, and what can I say… Here is a Bajaman creation that gives you the most accurate emulation of this legendary tone in a small footprint. After all his designs, I have high expectations in his schematics, and what can I say… He nailed that one!

Because the EQ is a massive part of the overall tone, it’s included in the pcb.

Side note 2.5nf are pretty hard to source. You can use a 2.7nf and still have more than just decent-sounding emulation of the amp, and it works best in the return of an FX loop. But I still had great results to shape a clean channel when used in front of my amps.

Controls

• Gain

• Presence

• Bass

• Treble

• Volume

• Bright switch

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

Tweed Twin 57 – Building Docs

Twin Tweed 57 – Drilling Templates

Schematic

The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 55 rows

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RefValueNormalizedTypeNotes
Resistors 25
R11M51.5M
R21M1M
R3100K100k
R41M1M
R51K51.5k
R62K72.7k
R71K51.5k
R83K33.3k
R92K22.2k
R10390r390
R112K72.7k
R122K22.2k
R1322k22k
R1422k22k
R1522k22k
R1647K47k
R172K22.2k
R1822K22k
R192K22.2k
R20100k100k
R216K86.8k
R221M1M
R231K1k
R2410K10k
R2510K10k
Capacitors 17
C11u1u
C2100n100n
C3390p390p
C5220n220n
C61n1n
C71n81.8n
C82n52.5n
C9470p470p
C1047n47n
C111u1u
C12100n100n
C1312n12n
C141u1u
C151u1u
C161u1u
C410u10u
C171u1u
Diodes 4
D01N58171N5817
D11N41481N4148
D21N41481N4148
D31N41481N4148
Transistors 1
Q1J201J201
ICs 2
IC2TL062TL062
IC3TL062TL062
Potentiometers 5
BASSB50KB50kPotentiometer
GAINB100KB100kPotentiometer
PRESENCEB10KB10kPotentiometer
TREBLEB10KB10kPotentiometer
VOLUMEB100KB100kPotentiometer
Jacks & sockets 1
J201Q1Q1