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The coil is energized by electric current from an amplifier. the current generates a magnetic force that interacts with the loudspeaker's magnet and forces the coil to move this moves the speakers kone to generate acoustic compression waves.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoThe coil in a loudspeaker forms an electromagnet, which makes the diaphragm, or cone, move.
The electrical signal from the amplifier, flows through the coil. The coil is suspended in a permanent magnetic field, formed by the magnet on the back of the speaker.
As the signal varies, the coil reacts with the magnetic field and causes it to move. As the coil is firmly attached to the paper, or plastic cone, this moves too, pushing air ahead of it and making sound waves in the air.
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What is the purpose of the coil in a speaker?
The coil produces a magnetic field. When power is applied to the wire in the coil, the result is a magnetic charge. This magnetic charge is part of how the speaker produces sound.
How does a audio speaker work?
an audio speaker works by an electro magnetic coil that vibrates when a sound wave or current is running through it. thats what makes the sound.
How can a speaker work with holes in it?
It can work, but it will not sound good. Any deformations of the cone will "color" the sound, which will sound muddy and not clear. Eventually the speaker will die due to the voice coil dragging in the magnet because the speaker isn't moving correctly. If you have a speaker with a hole in it you should replace it.
What is the name of the speaker that used Ultra sound?
You can't produce ultra-sound from a normal speaker. There would be no current to drive the coil due to the high frequency. It would have to be an ultrasound transducer.
What piece of station equipment converts electrical signals to sound waves?
a speaker's 'coil' (and magnet) converts electrical signals to sound
What is the part of a loudspeaker that vibrates to make sound?
a speaker uses a voice coil a coil copper wire and a magnet and pole to vibrate a cone
What is the energy transfer of a loud speaker?
Electrical energy -> magnetic energy ---------> sound energy (signal) (electricity in voice coil) (sound waves)
Why is electrical to sound energy taking place when you turn on a radio?
Electrical signals from the radio's circuitry energizes the voice coil of the speaker, which moves the cone of the speaker, that in turn disturbs air particles in its proximity, creating sound.
How do speaker use electromagnet?
Sound is made by pushing air with the cone. A coil of wire is attached to the cone. The "sound"current is passed through the coil. Any current running through magnetic flux causes the coil and cone to move. The larger the magnet the louder the sound. A strong permanent magnet is used. Electromagnets are not used, however
Does a spinning coil of wire is what moves the cone in a speaker producing the sound?
False
Why does a speaker need an electromagnet not a permanent magnet?
One of the main kinds of speakers needs both. Sound in the form of varying electricity is fed through part of the speaker known as the 'voice coil' which is actually just an electromagnet. Since the electricity in it is varying the magnetism produced by this coil varies too. The voice coil is placed close to a permanent magnet and the voice coil is permitted to move back and forth in response to the electricity going through it. A big cone is fastened to the voice coil to transmit the movements of the voice coil to the air more efficiently. Thus overall the permanent magnet and the electromagnet work together to produce the sound waves that we hear from a speaker. For a more detailed explanation go to the How Stuff Works web site and search for speaker.
How can you tell if your speaker is blown?
It may not make any sound, it may make a small crude sound, take the speaker and smell the open part of it. if there is any burning smell then there is a high chance that you have blown your speaker. Push on the cone. If it will not move than it is not customer servicable. If it is making extra crnching noise it is blown. If it moves VERY easily there is a small chance the coil burnt itself off of the former. Also the coil could've liquified.
