What is a speaker and what types are there?


Loudspeakers are devices that convert electrical signals amplified by an amplifier into air vibrations that can be heard by humans as sound. Loudspeakers are produced in different shapes and sizes, types and models. Regardless of their design, the goal of speakers is to produce audio output that can be heard by a human or listener.

Two-way speakers typically have a tweeter and a midrange speaker, while three-way speakers have a midrange speaker, tweeter, and subwoofer. The amplitude or loudness of the sound is determined by changing the air pressure created by the sound waves of the speaker. So, when you turn up your speakers, you’re actually increasing the air pressure of the sound waves. Since the signal produced by some audio sources is not very loud (such as a computer sound card), it may need to be amplified by a speaker. Therefore, most external computer speakers are amplified, meaning they use electricity to amplify the signal. Speakers that can amplify audio input are often active speakers. You can usually tell a speaker is active if it has a volume control or can be plugged in. Speakers that have no internal amplification are called passive speakers. Since these speakers do not amplify the audio signal, they require a high audio input level that may be generated by an audio amplifier.

Speakers are usually divided into two groups that allow them to produce stereo sound. This means that the left and right speakers transmit sound in two completely separate channels. Using two speakers, the sound sounds more natural. Pervasive systems are possible

Speakers are one of the most important audio technologies in the world that provide the possibility of playing and amplifying sounds. This technology is widely used in various types of devices and tools including televisions, radios, computers, mobile phones, cars and audio systems. The history of the speaker began at the end of the 19th century, and until today, due to numerous technological advances and many innovations, it has influenced the improvement of sound quality and the experience of listening to music and sounds. In this article, we will examine the history of the speaker from the early days to the peak in audio technology.


The earliest days of the speaker

The speaker was one of the great technological inventions of the 19th century, which made it possible to convert electrical energy into mechanical sounds. The earliest models of speakers were built based on the electromagnetic theory presented by Michael Faraday in 1831. These first speakers used a history of current magnetic force to move work that caused changes in magnetic fields, and these magnetic changes produced sound waves.

Technological revolution in the 1920s

In the 1920s, with the invention of dynamic and carbon microphones, speaker technology became a major revolution. These microphones could take sound energy in analog form from air vibrations and convert them into electrical waves. These electric waves were then converted into mechanical sounds by speakers. These types of speakers made it possible to amplify sounds and improve the experience of listening to sounds.

The difference between a speaker and a speaker

The difference between the speaker and the speaker cannot be considered too much, in fact the difference between the two is very small, but in any case there is a difference between the two. In the first place, it is better to know that both of them have the task of producing sound and in any situation they are used only for this purpose. The difference between speakers and loudspeakers in the first option is their size, which also determines their use.

How are the speakers used?

It is worth mentioning that speakers can be used in many cases, which we briefly discuss in the following text:

To listen to music from mobile, computer and…

For blind people who understand the content easily by listening to the sound.

Watching movies or videos in organizations, centers, schools, announcements and also playing music

And finally, graduation ceremonies, weddings, sports clubs, etc.

If you are looking for a variety of speakers that are suitable for travel, outings, etc., the best and most appropriate option is portable speakers. These types of speakers fit easily in your pockets and hands. Standing speakers, as their name suggests, are standing and have a tall stature, and this causes the sound to be heard directly.

Speaker types:

The speakers that exist in the market today can be classified based on different features. Below, this division is done based on the type of activity and their function, which we recommend you read to the end:


ceiling speaker

It can be safely said that this item is one of the most widely used speakers. As their name suggests, these are mounted on the ceiling and spread the sound evenly. Ceiling speakers are used in both small and large environments and can be installed as surface or built-in.

wall speaker

These types of speakers are installed vertically or horizontally on the wall. They are an excellent option for playing music or paging system. The above speakers are generally waterproof and can output between 5 and 100 watts. These speakers have strong bodies and sometimes adjustable bases so that they can be easily installed on all kinds of columns. The wall speakers are divided into two categories, ohmic and volt, which can be easily paired with amplifiers and have good sound. You can choose the output power of the device by considering the volume of the sound you need.