In the article "Retro style phone sound booster" We examined how to make a passive amplifier. Unfortunately, the author did not provide the video article and it is impossible to evaluate the sound of the device. In this article we will look at how to make such a device and, thanks to the author, we will hear the “gramophone” sound of the device on the video.
Tools and materials:
-Copper tubes and adapters;
-Wooden stand;
-Aluminum profile;
-Trumpet;
-Glue;
-Paint;
-Decorative elements;
Step one: bell
The author made a bell of paper, painted it and glued, on the bottom, a copper adapter.
Step Two: Pipe and Stand
Further, the author connected the copper tubes, used glue for fixing. The phone holder was made of aluminum profile. On one side of the profile, I cut an oval hole and secured the “flattened” end of the copper tube in it. On the sides of the profile fixed decorative elements.
Step Three: Stand
Fastens the pipe to the stand. Installs the phone.
All is ready. How such an amplifier works, you can see and most importantly listen to the video.