3. MAKE THE PLUG
3a. Cut and strip both ends of three 16"
pieces of stranded wire. Twist the ends.
3b. Remove the audio plug cover. Slip
the wires through the right, left, and
center terminals of the plug and twist
them into place. Solder.
3c. Cut two 1" pieces of heat-shrink
tubing. Slip them over the right and
left terminals and shrink.
3d. Using a black marker, mark the
bottom of the wire leading from
the center terminal. This will be the
ground wire. Slip clear ¼"-diameter
heat-shrink tubing over all 3 wires. Do
not shrink. Replace the plug cover.
4. BUILD THE CIRCUIT
Speaker
If you’ve never built a circuit on a
perforated board before, go to
craftzine.com/07/speakers for more
detailed information on how to use a
perf board.
220μF
+
The illustration at right shows how
the components of the circuit are
connected to each other.
+9V
0.05μF
10Ω
87
65
LM386
NOTE: This schematic is not
a direct translation of how the
circuit will be played out on
the perforated board.
Plug
1234
50KΩ
GROUND
WIRES
CONNECT
WIRES DO NOT
CONNECT
