How do speakers work?

Answer by  meatpaste (29)

An electrical current is passed through a coil creating a magnetic field. This causes the cone of the speaker to move in and out, creating sound.

Answer by  mandriloquai (324)

Speakers reproduce vibrations induced by electrical current. A current signal is sent from the amp unit to the speaker coil. This coil induces a variable magnetic field. As the field varies, it causes a magnet attached to the speaker's cone to shift back and forth, thus producing vibrations and sound.

Answer by  afree01 (128)

By passing an electric current though a wire wrapped around a speaker you create a magnetic field which pushes the speaker. This creates pressure waves that we interpret as sound.

Answer by  kennethjgoodson (4903)

Speakers take the electrical signals sent by your cd player or any other electrical device and send it back to you as vibrations or sound waves. There is a diaphragm, voice coil, dust cap, magnet, spider, a basket and a suspension and the diaphragm, voice coil, and dust cap all are moving up and down to the signals creating sounds.

Answer by  James1290 (86)

Speakers contain a small coil of wire around a magnet attached to the cone of the speaker. When current is passed through the coil it shakes the magnet producing sound.

Answer by  pryoplasm (444)

Exactly like a microphone, but backwards. They take an electrical signal, the sound, and send it to something called a diaphragm. This moves air in and out, and moves depending on the electrical input, reproducing sound. On some powered speakers, there is circuitry to amplify the sound, or improve it.

Answer by  thorsdecree (409)

Magnetic induction via the power cables create an electromagnetic field that causes ferrous material to move. Speakers contain strong magnets that act on this field. Thus, by calculating the energy required to induce a particular motion that will generate a specific sound, a controller can cause a speaker to move in a way that produces that sound.

Answer by  MikeLegs (75)

Speakers are just pressure waves. Usually when you have sub-woofers they have more diameter so they get the lower tones.