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DESCRIPTION OF ELEMENTS OF THE POWER AMPLIFIER
1,4) 300B power tubes socket
2,3) 6SN7 driver tube socket
5) housing for the output transformers
INSTALLATION OF THE VACUUM TUBES
Place the Mira Ceti 300B power amplifier on a stable surface. Carefully remove the vacuum
tubes from their packaging and install them in the appropriate sockets, as show below, and
adhering to the numbering scheme as identified on the packaging. Please pay attention to
the diameter of the socket and to the appropriate orientation of the vacuum tube pins.
The pins in the base of each of the vacuum tubes are “coded”, and this has the r
esult that
the insertion of the vacuum tube into the socket is possible only in one correct and
appropriate orientation. If, whilst inserting the vacuum tube you sense resistance, and you
can not push the tube into the socket, please check the orientation of its pins, rotate the
tube to the correct position and try again.
