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20 W Stereo Audio Amplifier
– 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.
– Insert the Molex socket into the
Conn3
connector on the left channel PWB. Note that the
drain wire goes to the first “GND” position.
– Route the cable to the rear of the chassis using the cable clamp along the side of the
chassis.
– Attach a connector pin to the white wire in the audio cable from Conn3 on the left channel
PWB. Clip off the shield wire as it is not used. Insert the pin into the socket housing on
Conn7
on the left channel speaker PWB as follows: white to position #2.
– Insert the 4-pin Molex socket for the left channel feedback connection on the
Conn7
header on the left channel speaker PWB. Use the legend on the PWB as a guide.
5.6.15 Audio Cabling
Hardware for the following steps can be found in the “Molex Housing and Terminals” package.
– Prepare a 5-inch long audio cable. Attach connector pins to each of the two wires on one
end of the audio cable. Insert the connector pins into the socket housing as follows: shield
to position #1 and white to position #2.
– 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.
– Insert the Molex socket into the
Conn2
connector on the right channel PWB. Note that the
drain wire goes to the first “GND” position.
– Attach the shield wire of the audio cable to terminal #1 (low) on the
right channel
Volume control
. Do not solder.
– Attach the white wire of the audio cable to terminal #2 (arm) on the right channel Volume
control. Solder. Dress the cable against the chassis.
– Prepare a 5-inch long audio cable. Attach connector pins to each of the two wires on one
end of the audio cable. Insert the connector pins into the socket housing as follows: shield
to position #1 and white to position #2.
Summary of Contents for J C Whitaker 20 W Stereo Audio Amplifier
Page 1: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Page 10: ...10 WhitakerAudio Figure 1 1 b...
Page 14: ...14 WhitakerAudio Figure 1 2 The preamplifier power supply PWB...
Page 20: ...20 WhitakerAudio Figure 1 4 Power management expansion circuit for the 40 W Stereo Amplifier...
Page 37: ...37 20 W Stereo Audio Amplifier Figure 3 1 Component layout for the Amplifier PWB 1 right board...
Page 39: ...39 20 W Stereo Audio Amplifier Figure 3 2 Rectifier PWB component layout...
Page 42: ...42 WhitakerAudio Figure 3 3 Component layout for the Amplifier PWB 2 left board...
Page 46: ...46 WhitakerAudio Figure 3 5 Layout of the preamplifier power supply PWB...
Page 86: ...86 WhitakerAudio Figure 5 7 Power management expansion PWB a component side b foil side a b...
Page 135: ...135 20 W Stereo Audio Amplifier Figure 5 15 Chassis view of the 20 W Stereo amplifier...
Page 179: ......
Page 180: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Page 184: ...184 WhitakerAudio Figure 1 1 Completed cable assembly...