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How do speakers work | A comprehensive guide 2025

Publicado por JiangDavid en

How do speakers work | A comprehensive guide 2025

How a Loudspeaker Makes Sound

Speakers make sound by using magnetism and electric current to move air, creating sound waves.

Inside a speaker, there is a strong magnet that stays in place. A coil of wire, called the voice coil, sits in a small gap near this magnet and is attached to a thin surface called the diaphragm. When an audio signal is sent to the speaker, electricity flows through the voice coil. This creates a magnetic field, turning the coil into a temporary magnet.

Since the audio signal is always changing, the voice coil’s magnetism changes too. This makes it push and pull against the fixed magnet. As a result, the voice coil moves back and forth, carrying the diaphragm with it.

The diaphragm’s movement pushes the air, making areas of high and low air pressure—these are sound waves. When these waves reach our ears, we hear sound.

The speed of the voice coil’s movement depends on the audio signal. A fast-moving coil creates high-pitched sounds, while a slow-moving coil makes low-pitched sounds.

In short, electricity creates a magnetic force, which moves the voice coil, which moves the diaphragm, which moves the air—turning electrical signals into sound.

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10 Bad Habits of Unsuccessful People

Publicado por JiangDavid en

10 Bad Habits of Unsuccessful People

The first successful person I ever met — truly successful, with accomplishments I admired and ambition I strove to emulate — was an entrepreneur in his forties, a client of mine in the first real business I’d ever started. I was 24 and eager to learn; he was constantly cheerful, and had more money than he could count. We became close friends, and he told me eventually that he’d lost his wife, the love of his life, a half-decade before we met — the kind of loss, he said, that you never get over. It was a story that made...

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Reading daily can change the structure of your brain

Publicado por JiangDavid en

Reading daily can change the structure of your brain

Do you enjoy reading? If so, you're doing something incredible for your brain. From novels to business books, reading has a profound impact on brain function and can even alter its chemistry. It offers numerous benefits, such as enhancing intelligence, improving mental health, and even increasing lifespan. Yet, in today's screen-obsessed world, reading remains an underutilized habit. Let’s explore why picking up a book is one of the best things you can do for yourself. How Reading Transforms Your Brain Sabrina Romanoff, a clinical psychologist based in New York City, explains that reading stimulates neurogenesis—the process of creating new neurons—and...

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