WhitakerAudio JC Whitaker 20 W Stereo Integrated Audio Amplifier, Manual

Page: 130 / 196

130
WhitakerAudio
In the following steps the Input selector switch, SW101, will be wired. Note there are two
sections to the switch, divided along a centerline down the middle of the device. The section
facing the right channel PWB will be used for the right channel inputs and the section facing the
left channel PWB will be used for the left channel inputs. The wiper arm is the connection post
nearest the front panel. Note also the position of the connection arm when the switch is in the
“Phonograph” position (check with an ohmmeter). This is position #1. Other positions go in
logical order.
Note that in order to gain access to some connection posts it may be necessary to temporarily
remove the Input switch knob and loosen the mounting nut. This will allow the component to be
rotated slightly.
– Connect the white wire of the free end of the Left Channel Line Input cable to the #2 (left)
position on front panel Input Switch SW101. Solder. Connect the shield to the #6 (right)
position on the switch. Do not solder.
Note that positions #4–6 (right) on SW101 are not used as inputs, but instead will be as a
shield termination point.
– Connect the white wire of the free end of the Right Channel Line Input cable to the #2
(right) position on front panel Input Switch SW101. Solder. Connect the shield to the #4
(right) position on the switch. Do not solder.
– Prepare an 18-inch long audio cable. Attach connector pins to each of the two wires (the
white wire and the shield) on one end of the audio cable. Insert the connector pins into a 4-
conductor Molex socket housing as follows: white to position #1 and shield to position #3.
– Cut two short pieces of small heat-shrink tubing, each about 3/4-inch long. Place the
tubing at each end of the audio cable. Process.
– Prepare an 18-inch long audio cable. Attach connector pins to each of the two wires (the
white wire and the shield) on one end of the audio cable. Insert the connector pins into the
4-conductor Molex socket housing as follows: white to position #2 and shield to position
#4.
– Cut two short pieces of small heat-shrink tubing, each about 3/4-inch long. Place the
tubing at each end of the audio cable. Process.