As Trever said there are many ways to build speakers.

To build really high quality speakers is a pretty involved process. You need a large metal band saw, a large lathe to make the metal parts. The cage is normally die cast. I guess it could be 3D printed. Then there is the question of how to build a Magnetizer. The voice coil is made from paper and wound on a lathe. Lots of glue and a couple of screws to hold things together. All this requires a high degree of machine shop skills and specialized speaker construction skills.

Now we come to the question of the speaker cone. These cones are made in factories specializing in their fabrication. Sheets of paper are liquefied to create a pulp. The pulp is applied to a form. The rough paper cone is placed in a heated press to form the finished cone. Glue like material is painted on the cone in certain places to make the cone more flexible. There is a considerable amount of research that has gone into the type of paper and the thickness, all of which affects the tone of the speaker.

There are a couple more parts but you get the idea. This does not even address the acoustic technology involved in the speaker enclosure.

So no....I have no intent of making speakers.

It is possible if I lived in a condition where I had no way to make money the speaker in the video could be very appealing. It did demonstrate a high level of ingenuity in taking very cheap common materials and turning that into what is a pretty complex device.

Cheers,

Billy

“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”