Classification of Speaker
Speaker of sound system can be divided into the following kinds based on different standards:
- Using occasion
- Speaker can be divided into two categories: professional speakers and home speakers.
- Audio frequency
- full-band speakers, bass speakers and subwoofer speakers
- Purpose
- Generally can be divided into main speakers, monitor speakers and back-to-listening speakers, etc.
- - Main speaker is generally used as the main sound box of the system to undertake the main sound reproduction task.
- - Monitor speaker is used for monitoring in control rooms or recording studios. It offers low distortion, wide and flat frequency response, and little modification of the signal.
- - Back-to-listening speakers, also known as stage monitor speakers, are generally used on the stage or dance hall for actors or band members to monitor their singing or performance.
- Cabinet Structure
- it can be divided into sealed speakers, inverted speakers, labyrinth speakers, sonic tube speakers and multi-cavity resonant speakers.
- - Closed Enclosure is the simplest speaker system. It was proposed by Frederick in 1923 and consists of a speaker unit installed in a fully sealed cabinet. This kind of small airtight speaker is also called air-cushioned speaker.
- - Bass-Reflex Enclosure) is also called Acoustical Phase Inverter. In its load, there is a sound outlet opening on a panel of the cabinet. There are various opening positions and shapes. But most of them also have acoustic conduits in the holes.
- - Acoustic Resistance Enclosure is deformation of a phase-inverted speaker. It is filled with sound-absorbing material or structure in the sound outlet duct, which acts as a semi-closed box to control the phase-inversion effect and reduce the anti-resonance frequency to broaden the bass frequency band.
- - Labyrinth Enclosure is named after the transmission line of the classical electrical theory. There is a sound tube made of sound-absorbing wall panels on the back of the speaker, the length of which is 1/4 or 1/8 of the wavelength of the low-frequency sound to be boosted .
- - Drone Cone Enclosure is a branch of bass reflex speaker, also known as empty cone speaker
- -Coupled cavity speaker is a cabinet structure between the closed type and the bass reflex type. It was published by Henry Lang in the United States in 1953. Its is output through the sound hole driven by one side of the cone.
- - Horn type Enclosure. Its horn mouth is coupled with a larger air load at the mouth, and the driving end has a small diameter. The back of this type of speaker is fully sealed, and the pressure in the chamber is mostly on the back of the speaker cone.
- Material
- wood, plastic, metal.