Dossiers A Better Life The Psionic Predator, by Charles Cosimano | Page 41

As you can see, everything is hooked to the center of the pattern.
To make this you will need:
1 box.
1 amplifying pattern
3 potententiometers, value unimportant.
1 foil circle
3 knobs.
2 jacks (1/8" is best though the ones in the unit pictured are bigger)
1 screw and nut