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BASSGAINMIDPRESENCETREBLEVOLUME

125B · 6 knobs

PCB Guitar Mania

Tweed Bassman 59 SMD

Based on the Fender Bassman pre amp· 1 other board clones it

Category
Overdrive· Pre amp Emulator
Controls
Bass · Gain · Mid · Presence · Treble · Volume
Difficulty
Easy
Price
€21.90out of stock
Tags
smd, 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

About The Pedal Creators

Everyone can build excellent boutique guitar pedals. Everything we do is to make that experience more accessible and user-friendlier. The Pedal Creators series are the best and easiest to build PCBs ever. Including most resistors and capacitors already soldered on board as SMD components, leaving the key values for you to experiment and craft your own tone. Now you can build a pedal you are proud of in less than an hour without any previous experience. What are you waiting for to become a Pedal Creator?

The Pedal creators – key features:

• Easy to build, no previous experience required. It’s like Lego for musicians.

• Fast assembly, finish a pedal in less than an hour. Play your favorite record and enjoy the ride along.

• 100% mistake-proof. Even my grandma can build one while she cooks.

• Build your own boutique pedal. Experiment with different values and make the pedal you always dreamed of.

• Easy to scale. Turn your passion into a money-making machine.

Project overview

The Tweed Bassman 59 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

The Fender 1959 Bassman was originally designed (as the name says) to be a Fender’s first dedicated Bass Amplifier that delivers a lot of volume without getting distorted. Over the year, guitar players started to fall in love with it as well because of its massive headroom that provides you with the famous F-cleans, and that’s one of the reasons it’s being built with a short time out from 1951 till now. Bajaman did a great job emulating this amplifier’s preamp, and we made a pcb for you to join the party.

Because the EQ is a massive part of the overall tone, it’s included in the pcb, as well as the power section after it, so prepare yourself cause this little thing can get pretty loud!

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

• Mids

• 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 Bassman 59

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 26 rows

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RefValueNormalizedTypeNotes
Capacitors 11
C11u1u
C101u1u
C111u1u
C12560n560n
C14680n680n
C151u1u
C171u1u
C181u1u
C447u47u
C810u10u
C191u1u
Diodes 5
D01N58171N5817
D21N41481N4148
D31N41481N4148
D41N41481N4148
D51N41481N4148
Transistors 1
Q1J201*J201
ICs 2
IC2TL062TL062
IC3TL062TL062
Potentiometers 6
BASSB50KB50kPotentiometer
GAINB100KB100kPotentiometer
MIDB1KB1kPotentiometer
PRESENCEB10KB10kPotentiometer
TREBLEB10KB10kPotentiometer
VOLUMEB100KB100kPotentiometer
LEDs 1
D13mm LED3MM LED

Other boards based on the Fender Bassman pre amp