How do you make your own talk box?
How To Make A TalkBox - YouTube
How to Set Up a Talkbox - ACM Tutorial with Brian Henry - YouTube
How Do I Talk On the Talkbox? - YouTube
What's Inside A Talk Box? - YouTube
How to Create a Talk Box Effect for Electric Guitar | Talkbox - YouTube
Typically, a talk box directs sound from the instrument into the musician's mouth by means of a plastic tube adjacent to a vocal microphone. The musician controls the modification of the instrument's sound by changing the shape of the mouth, "vocalizing" the instrument's output into a microphone.
For a talk box, you need a guitar, an amplifier, a microphone, a speaker system, a horn driver and a plastic tube to produce the sound.
The box usually sits on the floor, with the tube held onto a mic stand. You use your mouth to 'shape' the sound, and a microphone takes that sound to the PA system. So, you need: - An amp to drive the talkbox speaker.
The way traditional talk boxes work is the sound comes up through the tube from the talk box, into your mouth. Then you manipulate the sound by mouthing words, changing the shape of your mouth, and your microphone picks up those sounds. Yes, talkboxes require a microphone and PA.
THE LAST TALK BOX TUTORIAL YOU'LL EVER NEED - YouTube
How do you talk with a talkbox?
Place the end of the tube between your teeth so that the sound resonates into your mouth and takes on the characteristics of different vowels and consonants, words and phrases. Finally, the resulting sound is picked up by your vocal mic, just as if you were singing normally, with your own vocal cords.
How to hold the talkbox tube in your mouth. - YouTube

Today's Morning Edition music is from "Livin' on a Prayer" by Bon Jovi which was number one on the Billboard pop chart 30 years ago today. The song was recorded using a talkbox — a device that was connected to Richie Sambora's guitar. The sound from the guitar is fed through a plastic tube into Sambora's mouth.
How to hold the talkbox tube in your mouth. - YouTube