WhitakerAudio J C Whitaker 20 W Stereo Audio Amplifier, Manual

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– Cut an 11-inch long #22 black wire. Attach a quick-disconnect terminal to each end of the
wire. Connect one end to the available GND terminal on the rectifier PWB. Leave the
other end free; it will be connected to the preamplifier power supply board.
– Prepare an 11-inch long #18 black wire. Secure one end to the ground lug on the corner of
the right channel PWB. Solder (2 wires).
– Route the free end of the 11-inch #18 black wire to one of the available the back panel
ground lugs. Do not solder. Route the wire through the cable clamp adjacent to the right
channel PWB.
– Prepare an 14-inch long #18 black wire. Secure one end to the ground lug on the corner of
the rectifier PWB. Solder (2 wires).
– Route the free end of the 14-inch #18 black wire to the back panel ground lug that contains
the black wire from the right channel PWB. Do not solder. Route the wire through the
cable clamp in the rear portion of the chassis.
– Prepare a 10-inch long #18 black wire. Secure one end to the ground lug on the corner of
the left channel PWB. Solder (2 wires).
– Route the free end of the 10-inch #18 black wire to the back panel ground lug that also
contains the ground wires from the right channel and rectifier PWBs. Solder (3 wires).
– Prepare a 14-inch #18 black wire. Connect one end to one of the available ground lugs on
the back panel main ground point. Do not solder. Route the free end of the wire to the area
where the preamplifier power supply PWB will be mounted.
5.6.9 Primary Power Connections
Find the package “AC Power Connector Hardware.” In the following steps, the ac primary wiring
will be installed.
– Prepare an 11-inch piece of black #18 wire. Attach one end of the wire to the ground lug
on ac line filter FL51. Solder. Attach the other end of the wire to one of the available lugs
at the main ground point. Use the ground lug that already contains the ground wire from
the preamplifier power supply PWB. Do not solder.