Washer with a^1 ⁄ 4 " inner diameter (ID) and 1^1 ⁄ 2 " outer diameter (OD)
^3 ⁄ 16 " ID rubber 0-ring
^1 ⁄ 4 " thick rubber gasket material
1" diameter schedule 40 PVC pipe, 16" long
1" clamp
Four^1 ⁄ 2 " 8-32 panhead screws
Four 8-32 nuts
You should be able to find the last 12 parts on this list at your local building
supply or hardware store. Take this book with you: The photos should help
you pick out the right parts, and everybody who sees you with it will realize
just how smart you are.
Microphone
cartridge
Right-angle
phono plug
SPST toggle switch Phono jack
Electrolytic
capacitor
Potentiometer
Ceramic capacitor IC Headphone jack
Figure 6-3:
Key
components.
Chapter 6: Focusing Sound with a Parabolic Microphone 121