What is speaker made of?

Speakers contain many components, including a frame, a magnet, an iron core, a voice coil, and a cone. The magnet and the cone are attached to the frame. The voice coil is an insulated wire wrapped around a bobbin and connected to the audio source. The bobbin is attached to the cone and contains a soft iron core.

What current flows inside a loudspeaker?

Alternating current supplied to the loudspeaker creates sound waves in the following way: A current in the coil creates a magnetic field around it. Repeatedly alternating the current direction makes the cone vibrate in and out. The cone vibrations cause pressure variations in the air, which are sound waves.

Why do speakers have magnets?

Answer: Every amplifier (speaker) has an electrical current. When the current is changing, it produces a magnetic field. To make the cone (or panel) of the speaker move, magnets are used to create an opposing magnetic field which creates vibrations. These vibrations are the sound we hear.

What are the parts of a speaker?

A summary of the parts that make up a speaker, and some of the critical design issues is shown here.

• Yoke. the back of the loudspeaker.
• Magnet. The driving force of the speaker, but magnets are available in a wide variety of specifications and sizes.
• Front Plate.
• Chassis.
• Voice coil.
• Suspension.
• Cone.
• Surround.

How is sound produced in a loudspeaker?

Loudspeakers produce sound waves by causing a thin diaphragm to vibrate and disrupt the air pressure around it in the form of the intended sound wave. An amplified audio signal (alternating current) that has the same waveform as the sound wave is responsible for vibrating the speaker diaphragm.

Why are magnets used in loudspeakers?

To make the cone (or panel) of the speaker move, magnets are used to create an opposing magnetic field which creates vibrations. Speakers often contain large magnets inside of them, as a larger opposing magnetic field creates more vibrations. The larger the magnet, the louder the speaker.

What does the spider do in a speaker?

The Spider fits around the speaker voice coil and is attached to the speaker basket. It is one of the components (along with the cone) that help to keep the voice coil centered in the magnetic gap and affects excursion (movement).

Do TVS have magnets?

Television. All televisions have cathode ray tubes, or CRTs, and these have magnets inside. In fact, televisions specifically use electromagnets that direct the flow of energy to the corners, sides, and half of your television screen.

What is inside a stereo?

In most stereo systems, the preamp and amp, along with an FM tuner, are packaged in one unit (see stereo receiver). In high-end systems, the preamp, amp and all audio sources are separate components.

What is the front of a loudspeaker made of?

At the front of a loudspeaker, there is a fabric, plastic, paper, or lightweight metal cone (sometimes called a diaphragm) not unlike a drum skin (colored gray in our picture). The outer part of the cone is fastened to the outer part of the loudspeaker’s circular metal rim.

What is a speaker enclosure made of?

The enclosure, also known as “the Box” can be made of various materials including wood or plastic. This houses all the components of your speaker. You decision on which one to buy will often be based on visual elements at this point.

Why are there different types of loudspeaker drive units?

Some only have a single drive unit or loudspeaker unit, but often these single speaker systems have limited response at the low and high frequency ends of the frequency spectrum. As a result many systems consist of two or even three different loudspeaker drive units, each targeted at covering a different frequency range.

What is the outer part of a speaker called?

The outer part of the cone is fastened to the outer part of the loudspeaker’s circular metal rim. The inner part is fixed to an iron coil (sometimes called the voice coil, colored orange in the diagram) that sits just in front of a permanent magnet (sometimes called the field magnet, and colored yellow).