Types of speakers ������

Types of loudspeakers

What is a loudspeaker or sound radiation system?

This is an electroacoustic transducer which converts an electric signal into a sound. The first practical moving-coil loudspeakers were manufactured by Danish engineer Peter L. Jensen and Edwin Pridham in 1915, in Napa, California. Like previous loudspeakers these used horns to amplify the sound produced by a small diaphragm.



Other the other hand, the first electric loudspeaker was patented by Alexander Graham Bell in 1876 as part of his phone. It was later improved by Ernst Siemens in 1877.



Louds speakers today are used to communicate sound and information to people on large sized areas and short distances. Loudspeakers are designed to provide audible and clear sound to the listeners. Today we are going to learn a out the type different types of speakers including:

Full-range drivers

Subwoofer

Woofer

Mid-range driver

Tweeter

Coaxial drivers

Horn loudspeakers

Transmission line loudspeaker



Full-range drivers: This is a unit which

reproduces as much sound of the audible frequency range as possible, within the limitations imposed by the physical constraints of a specific design. The frequency range of these drivers is maximized through the use of a whizzer cone and other means.



Most full-range speakers have a low frequency of around 60-70 Hz. Larger units with 15” drivers will reach low frequencies, while those of 10” LF drivers or less will roll off closer to 100 Hz.



Subwoofer: A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies known as bass and sub-bass, lower in frequency than those which can be (optimally) generated by a Woofer.



One of the first subwoofers was developed during the late 1960s by Ken Kreisel, the former president of the Miller & Kreisel Sound Corporation in Los Angeles.



Woofer: A woofer or bass speaker is a technical term for loudspeaker driver designed to produce low frequency sounds, typically from 40 Hz up to 500 Hz.



The name is from the onomatopoeic English word for a dog's bark, "woof" (in contrast to the name used for loudspeakers designed to reproduce high-frequency sounds, tweeter).



Mid-range driver: A mid-range speaker is a loudspeaker driver that reproduces sound in the frequency range from 250 to 2000 Hz. It is also known as a squawker. Mid-range drivers are usually cone types or, less commonly, dome types, or compression horn drivers.



Mid-range drivers reproduces sound in the frequency range from 250 to 2000 Hz. 



Tweeter: A tweeter or treble speaker is a special type of loudspeaker (usually dome or horn-type) that is designed to produce high audio frequencies, typically from around 2,000 Hz to 20,000 Hz (generally considered to be the upper limit of human hearing).



They use drivers to help translate electrical signals into physical vibrations so that you can hear recorded sounds. A tweeter is the type of speaker driver that produces the highest range frequency. ... Basically, a driver moves a flexible cone, or diaphragm, back and forth very quickly to produce sound waves.



Coaxial drivers: Coaxial speakers in automobiles are 2 or 3 way loudspeakers in which the tweeter, or the tweeter and a mid-range driver, are mounted in front of the woofer, partially obscuring it. The low frequency sound waves from the woofer are not reduced too much by the drivers in their path.The advantage of this design is the ability to use a smaller area, hence their popularity in car audio.



SEAS designed and manufactured the first coaxial drivers more than 1990s. R&D engineer Bjørn Børja recognized the unique possibilities created by the new neodymium magnet technologies; allowing us to design a high performance tweeter in a very compact package.



Horn loudspeakers: A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving elements The horn serves to improve the coupling efficiency between the speaker driver and the air.



Werner von Siemens filed a patent for a “mobile coil transformer” in 1877, he was multi talented.



Transmission line loudspeaker: A transmission line loudspeaker is a loudspeaker enclosure design which uses the topology of an acoustic transmission line within the cabinet, compared to the simpler enclosures used by sealed ir closed or ported bass or reflex designs.



Under the company audioXpress, Thor the first transmission line loudspeaker was designed by Joseph (Joe) D'Appolito, who is world-renowned for his pioneering work on MTM-based (mid-tweeter-mid) loudspeaker configurations.



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