untitled

2. Place the speaker against the face of the box where you want to
   mount it and mark positions for the four screws you’ll use to secure
   the speaker.


3. Drill holes to allow clearance for 6-32 screws.
   We used a^9 ⁄ 64 " drill bit.


4. Draw an outline about^1 ⁄ 4 " smaller than the speaker shape for the open-
   ing to let sound from the speaker out.
   Use a coping saw to cut the opening.

Pin 5 of IC2 to open region

Pin 5 of IC1 to R1 TB

L1/C2 TB to Pin 8 of IC 1

Battery pack TB to Pin 6 of IC 1

Open region to speaker TB

Pin 8 of IC2 to open region

R1 TB to Pin 3 of IC 2 L1/C2 TB to Pin 1 of IC 1

Connecting pins of L1/C2 terminal block

Figure 8-8:
Hook up the
ICs, terminal
blocks (TB),
and discrete
components.

Chapter 8: Surfing the Airwaves 175