76 ELECRAFT
Using a sharp tool, cut through and peel off about 1/2" x 1/2"
(12 x 12 mm) of the masking material covering the EXT SPKR
hole. Note: Leave the other holes covered with masking material
until the associated options are installed.
Install the external speaker jack in the EXT SPKR hole.
Orient the jack as shown in Figure 7-1 and Figure 7-4, with the
"AF" tab nearest the inside of the top cover. (Caution: Mis-
identification of the three tabs could result in a ground short.)
24" (61 cm) of 2-conductor speaker cable is supplied. Cut it
into two pieces, 15" (38 cm) and 9" (23 cm) long.
Solder crimp pins to the two wires at one end of the 15" (38
cm) length of speaker cable (Figure 7-3).
Pin 1 side
Copper wire
Crimp pin
Housing
Figure 7-3
i
When you insert crimp pins into the housing in the next
step, they should snap into place. Each pin has a small tab on the
back that latches into a hole in the housing when inserted.
Insert the copper wire into the pin 1 position of a two-pin
housing as shown. Insert the other wire into the pin 2 position.
Connect the other end of this cable to the external speaker
jack as shown in Figure 7-4. The copper wire must be connected to
the "AF" lug of the speaker jack. Solder only the copper wire.
SP
AF
Co
er wire
Ground
Figure 7-4
Connect one end of the 9" (23 cm) speaker cable to the
speaker terminals. The copper wire should be connected to the lug
marked (+) on the speaker. Solder both wires.
Connect the other end of this cable to the external speaker
jack as shown in Figure 7-5. The copper wire must be connected to
the lug marked "SP" below. Solder all three lugs.
SP
Copper wire
Ground
Figure 7-5
Use three cable ties at the points shown in Figure 7-1 to hold
the speaker cables in place. (Save the fourth cable tie for use with
the supplied RF probe.) The ties should be pulled tight. Trim any
excess cable tie length.
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