M2 Power Supply Board Construction Steps; Installing The Valve Bases - Audio Note L2 Line Preamplifier Instruction Manual

M2 Power Supply Board Construction Steps

Installing the Valve Bases

Lets start by installing the 8-pin valve base with correct orientation.
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The 8-pin (octal) valve base is shown opposite.
It's a fairly tight fit into the board so take you will need to
take your time and make sure all the legs are individually
positioned over the holes in the board.
Now, let's make sure we have the correct orientation - note
the Notch on the valve base along with the Notch on the
PCB. These need to line up - see next image.
Here you can clearly see the notches lined up – this is a
correct orientation of the 8-pin valve base.
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