![]() Skin vibrate a greater distance and produce a louder sound. Why? Think about drums.īanging a drum skin really hard makes the Loudspeakers will play loud when the cone vibrates a large amount, or ![]() ![]() How speakers make sounds of different volume and frequency As the coil moves, it moves the cone (gray) back and forth, pumping sound waves into the air (light blue). When a fluctuating electric current flows through the coil (orange), it becomes a temporary electromagnet, attracted and repelled by the permanent magnet (blue/red). This is why loudspeakersĪre technically called drivers: they "drive" (move) the air to produce sound.Īnimation: How a loudspeaker works. Like a drum skin vibrating back andįorth, the moving cone pumps sounds out into the air. This moves the coil back and forward, pulling and This turns the coil into a temporary magnet or electromagnet.įlows back and forth in the cables, the electromagnet either attracts or repels the When you hook up the loudspeaker to a stereo, electrical signals feed through the speaker cables (red) into the coil. To an iron coil (sometimes called the voice coil, colored orange in the diagram) that sits in a hollowed-out ring at the front of a permanent magnet (sometimes called the field magnet, and colored yellow). Part of the loudspeaker's circular metal rim. The outer part of the cone is fastened to the outer Unlike a drum skin (colored gray in our picture below). Paper, or lightweight metal cone (sometimes called a diaphragm) not Loudspeakers work in aĪt the front of a loudspeaker, there is a fabric, plastic, The tight drum skin moving up and down very quickly for some timeĪfterward-pumping sound waves into the air. Sound is invisible most of the time, but sometimes you canĪctually see it! If you thump a kettle-drum with a stick, you can see When things shake about, or vibrate, they make the sounds we can How loudspeakers turn electricity into sound Why bigger and more powerful isn't always louder.Listening with both ears: stereo, quad, and binaural. ![]() ![]() How speakers make sounds of different volume and frequency.How loudspeakers turn electricity into sound. ![]()
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