Specifications

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Tweed 5E3 PCB Valve Junior Conversion
Build Manual v3.0 13 Feb 2011
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6. Prepare the Chassis
6.1 Layout and Drill
The Tweed 5E3 PCB, and control potentiometers require some drilling of both
the front panel & bottom of the chassis.
6.1.1 Layout the Tweed 5E3 PCB for Drilling
Since the Tweed 5E3 PCB was designed to use the stock EVJ chassis standoffs,
one method to mark the additional chassis holes is to install the board.
Lay the circuit board in the chassis, align the stock mounting studs, and install
two or three screws to fasten the board. With the board aligned to the chassis,
mark the two additional stand-off & tube socket drill locations as shown.
You will also drill out the existing EL84 hole to make it wide enough for the
second octal base.