Electrical characteristics of dynamic loudspeakers

Ok kiddo, so let's talk about dynamic loudspeakers and what makes them work.

A loudspeaker is a device that turns electrical signals into sound waves that you can hear. Dynamic loudspeakers are one type of loudspeaker that uses a magnet, coil of wire, and a cone to make sound.

Now, you know that magnets have two sides, right? A north and a south pole. And you also know that opposite poles attract each other and the same poles repel each other.

Well, in a dynamic loudspeaker, there's a permanent magnet with a north and south pole. And then there's a coil of wire that's wrapped around a part called a voice coil. This voice coil is attached to a cone that moves back and forth to make sound.

When an electrical current goes through the wire coil, it creates a magnetic field that changes polarity depending on the direction of the current. This changing magnetic field interacts with the permanent magnet, causing the voice coil to move back and forth along with the cone.

And that's how sound is made! The back-and-forth motion of the cone creates sound waves that travel through the air to your ears. And depending on how the electrical signals (music or speech) are sent to the coil, different frequencies and volumes of sound can be produced.

So there you have it, a dynamic loudspeaker works by converting electrical signals into vibrations and sound waves using a permanent magnet, coil of wire, and a cone.