Specifications

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Tweed 5E3 PCB Valve Junior Conversion
Build Manual v3.0 13 Feb 2011
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1. Introduction
This manual contains instructions to convert an Epiphone Valve Junior, Harley
Benton GA-5 or Legacy Valve Edition into a 14-18 watt Push Pull tube amplifier
modeled after the legendary Fender Deluxe Model 5E3 (AKA Tweed Deluxe
5E3). The heart of the amp is the Tweed 5E3 PCB, which conveniently lays out
the circuit in a printed circuit board, PCB, package.
This manual provides instruction for the assembly of version 3.3 & 3.4 of the
Tweed 5E3 PCB.
To simplify things,
x The Epiphone Valve Junior, GA-5 & Legacy Valve Edition will collectively
be referred to as the EVJ or VJr
This manual guides you through the conversion which includes:
x removing the stock EVJ chassis from its cabinet,
x extracting the stock EVJ PCB,
x drilling the chassis,
x assembling the Tweed 5E3 PCB,
x installation and hookup of the Tweed 5E3 PCB into the EVJ chassis,
x initial power-up and testing, and
x re-installing the chassis back into the EVJ cabinet to finish up the job.
+HUH¶VWKH7ZHHG(3&% v3.3.
Whilst it is labeled 9HUVLRQLWLVWKHILUVWµSURGXFWLRQ¶UHOHDVHRIWKHERDUG
There were a number of prior prototypes that led to this.