Over the last century, the audio world has produced many alternative speaker designs, even though it’s protected to say that the proven moving coil reigns supreme. However, this doesn’t stop many engineers from trying recent ways of making sound [R.U.H] is here with a homemade version of one in all them. It is a foil tweeter whose design is that a corrugated strip of foil is held in a magnetic field and vibrates when an acoustic frequency current is passed through it.
It shows several versions of this design, each with neodymium magnets, but with different foils and 3D printed or picket frames. They each make sounds when connected to an amplifier, and it’s no surprise that the thicker foil emits less high tones.
We see that it is feasible to get a high-quality tweeter, but we cannot shake off one concern. This device has extremely low impedance in comparison with an amplifier and would due to this fact likely draw far an excessive amount of current. We would expect it to be driven by a transformer as an alternative if it was concerned with not killing the amplifier.
Fortunately, there are other uses for ribbon. These are significantly better often known as microphones.
