SPKR MiK: How to make a microphone from a speaker.

Step 5 Mount the components

Trim the shafts of the switch and the potentiometer to the right length to fit your knobs with a hacksaw or cutting disc with a rotary tool. File down any sharp burrs.

Mount the components in the shell and make them snug. Don't over tighten. You don't want to strip the threads. :) Also mount the container for the transformer. A metal container will help shield from outside interference.

Wait to mount the speaker until step 7.