Wampler Tweed '57

effect pedal project by Fender

Here's the Wampler Tweed '57 effect pedal project from Fender.

This project has been described using terms like amp emulation, overdrive, stripboard, vero, and wampler and is reportedly verified, meaning many hobbyists have already completed this project and verify that the instructions are without issue.

Beyond the specs and details found on this page, you'll want to check out these stripboard resources too.

Project Resources

Parts List

  • C1
    220n
  • C2
    1u
  • C3
    1n5
  • C4
    1n5
  • C5
    47u
  • C6
    100n
  • C7
    470p
  • C8
    1n5
  • C9
    100p
  • C10
    220n
  • C11
    220n
  • C12
    1u
  • C13
    220u
  • C14
    220n
  • C15
    22u
  • C16
    2n2
  • C17
    47u
  • P1
    500k Gain
  • P2
    25k Treble
  • P3
    100k Bass
  • P4
    2k Mids
  • P5
    100k Volume
  • R1
    10k
  • R2
    100R
  • R3
    10k
  • R4
    1M
  • R5
    12k
  • R6
    1M
  • R7
    1k
  • R8
    1M
  • R9
    100k
  • R10
    10k
  • R11
    16k
  • R12
    1k
  • R13
    1M
  • R14
    22k
  • R15
    1M
  • R16
    1M
  • R17
    68k
  • R18
    10k
  • R19
    1k
  • R20
    22k
  • R21
    1k
  • R22
    22k
  • R23
    5k6
  • S1
    DPDT
  • T1
    J201
  • T2
    J201
  • T3
    J201
  • T4
    J201
  • T5
    J201
  • T6
    J201
  • U1
    9V

Similar transistors & Potential Alternatives

Can't find an exact match for the recommended transistor in this project within your stash? Or maybe you just feel like experimenting. Use these tables below to get started finding a suitable or otherwise interesting transistor substitution.

There may be 2 alternatives for the J201 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's FETType, CntlChType, Vgs, Vds, and Id values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

J201
more info
CntlChType
N
channel
FETType
JFET
Id
0.001
A
Pd
0.625
W
Tj
150
°C
Vds
40
V
Vgs
1.5
V
MMBFJ201
more info
CntlChType
N
channel
FETType
JFET
Id
0.001
A
Pd
0.35
W
Tj
150
°C
Vds
40
V
Vgs
1.5
V