WhitakerAudio 60 W Stereo Power Amplifier, User And Assembly Manual

Page: 81 / 154

81
60 W Stereo Power Amplifier
– Connect the free end of the right channel input cable to the right channel RCA input jack.
Solder the white conductor to the center pin. Solder the shield wire to the ground (shell)
end. Dress the cable to rest against the chassis.
– Prepare a 26-inch long audio cable. 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.
– Connect the white wire of the cable just prepared to the high side (terminal 3) of the left
channel Volume control. Solder in place. Connect the shield wire to the low side of the left
channel volume control (terminal 1). Solder in place (2 wires).
– Route the audio cable to the rear panel using the cable clamps provided along the side of
the chassis.
– Connect the free end of the left channel input cable to the left channel RCA input jack.
Solder the white conductor to the center pin. Solder the shield wire to the ground (shell)
end. Dress the cable to rest against the chassis.
The audio input and feedback circuit connections have now been made. Double check your
work before moving on.
5.4.14 Speaker PWB Assembly and Installation
Find the speaker terminal PWBs. Two are provided—one for the right channel and one for the left
channel. Each board mounts on the speaker terminals for the respective channel.
Temporarily fit each PWB on to the speaker terminals. The board should fit tightly over the
posts. Upon completion the boards will be soldered to the posts. Note that it may be necessary to
trim the end points of the posts in order to provide for a good fit with the boards.
Remove the boards from the chassis and perform the following steps.
– Using the technique shown in Figure 5.1, mount the 11 quick-disconnect posts on the right
channel PWB. Solder.
– Using the technique shown in Figure 5.1, mount the 11 quick-disconnect posts on the left
channel PWB. Solder.
– Install R16 – 200
Ω
, 0.5 W – on the right channel speaker PWB in the position “ Rfb ”.
Solder in place.