With the pace of life, people nowadays are in the era of entertainment. Many people have bought speakers at home and can listen to songs and sing at home, but people don’t know what speakers are. Brand, I don’t know much about these. Next, we will introduce the brand of modern audio and the types of modern audio. I hope you can refer to it!

1. The brand of modern audio

1. Modern Audio, JBL, (400-630-6678, founded in the United States in 1946, a global manufacturer of audio and infotainment products, the world's largest professional speaker manufacturer, Harman (China) Investment Co., Ltd.)

2·Modern Audio, Hivi, (400-0909-199, a famous domestic home theater/audio brand, a Hi-End advanced speaker manufacturer with international reputation, a leader in electroacoustic technology, Zhuhai Hivi Technology Co., Ltd.)

3·Modern Audio, Yamaha, (400-051-7700, founded in Japan in 1887, started with high-quality reed organs, the world's largest musical instrument manufacturer, specializing in the production of musical instruments/audio equipment/ Audio-visual products/semiconductor materials, etc., Yamaha Musical Instruments and Audio (China) Investment Co., Ltd.)

4·Modern audio, PHILIPS, (4008-800-008, started in the Netherlands in 1891, a world-renowned multinational electronics company Brand, a large electronics company focusing on healthcare/quality life and lighting fields, Royal Philips of the Netherlands)

5·Modern audio, Harman Kardon, (400-630-6678, founded in 1953 in the United States , an internationally renowned manufacturer of audio products, an enterprise specializing in the R&D/production/sales of home and car audio, Harman (China) Investment Co., Ltd.)

6·Modern audio, Edifier EDIFIER ( 400-810-5526, founded in 1996, a famous trademark in Beijing, a high-tech enterprise with multimedia audio and home audio as its core products, Shenzhen Edifier Technology Co., Ltd.)

7·Modern Audio SONY Sony, (400-810-9000, founded in Japan in 1946, a representative Japanese enterprise, a giant in the world's electronic 3C/games/finance/entertainment fields, the founder of portable digital products, Sony Corporation)

8·Modern Audio, SANSUI Shanshui Audio, (0760-88886978, founded in Japan in 1944, its speakers are internationally famous, providing diversified electronic products and services, the world's largest audio-visual enterprise with a long history, Guoguang Electric Co., Ltd.)

2. Types of modern audio

1. Closed Enclosure is the simplest speaker system. It was proposed by Frederick in 1923. The speaker unit is installed in a fully sealed box. It can completely isolate the forward-radiated sound waves and backward-radiated sound waves of the speaker. However, due to the existence of the closed box, the rigidity of the speaker's moving mass to produce maximum vibration is increased, making the speaker's lowest vibration frequency rise. The sound of sealed speakers is a bit deep, but the bass analysis is good. When using ordinary hard ring speakers, in order to obtain satisfactory bass reproduction, a large box with a large volume needs to be used. The new sealed speakers use a large box enclosed in the box. Due to the elastic effect of compressed air mass, although the speaker is installed in a smaller box, the air cushion behind the cone will exert a counter-driving force on the cone, so this small sealed speaker is also called an air-cushion speaker.

2. Bass-Reflex Enclosure, also known as Acoustical Phase Inverter, was invented by Thuras in 1930. In its load, there is a sound outlet opening in a panel of the cabinet. There are many opening positions and shapes, but most also have sound conduits installed in the holes. The relationship between the internal volume of the box and the hole of the sound conduit, according to the Helmholtz vibration principle, produces vibration at a specific frequency, which is called the anti-vibration frequency.

The sound waves radiated backward by the speaker are inverted through the conduit, radiated to the front from the sound outlet, and superimposed in phase with the sound waves radiated forward by the speaker. It can provide a wider bandwidth than a closed speaker, with higher sensitivity and smaller Distortion, under ideal conditions, the lower limit of low-frequency playback frequency can be as much as 20 lower than the maximum vibration frequency of the speaker. This type of speaker can reproduce rich bass with a smaller cabinet and is currently the most widely used type.

3. The acoustic resistance speaker (AcousticresistanceEnclosure) is essentially a deformation of the inverted speaker. It is filled with sound-absorbing materials or structures in the sound outlet duct and serves as a semi-sealed box to control the inverted phase. It acts as a buffer to reduce the feedback vibration frequency and widen the bass reproduction frequency band.

4. Transmission line speakers (Labyrinth Enclosure) are named after the transmission lines of classical electrical theory. There is a sound conduit made of sound-absorbing wall panels behind the speaker. Its length is the required length to increase the wavelength of low-frequency sound. one-quarter or one-eighth. Theoretically, it attenuates the sound waves coming from behind the cone and prevents them from being reflected to the open end and affecting the sound radiation of the woofer. But in fact, transmission line speakers have a mild damping and tuning effect, which increases the sound output of the speaker near or below the maximum vibration frequency, and reduces the stroke amount while enhancing the bass output. Usually the sound ducts of this kind of speakers are mostly folded into a labyrinth shape, so they are also called labyrinth or labyrinth type.

5. Passive radiating speakers (DroneConeEnclosure) are a branch of bass reflex speakers, also known as empty paper cone speakers. Published by Olson and Preston in the United States in 1954, its open-hole sound outlet is replaced by an empty paper cone (passive cone) without a magnetic circuit and voice coil. The radiated sound generated by the vibration of the passive cone is different from the forward radiated sound of the speaker. In the same phase working state, the composite sound composed of the air in the box and the passive cone support element is used to form a resonance with the passive cone mass to enhance the bass. The main advantage of this kind of speaker is that it avoids the unstable sound generated by the reflected sound hole, and can obtain good sound radiation effect even if the volume is small. Therefore, it has high sensitivity, can effectively reduce the working amplitude of the speaker, has little standing wave influence, and has a low sound effect. Clear and transparent.

With the improvement of living standards, many people are installing speakers at home. The above article talks about the brands and types of modern speakers. I don’t know what the editor said.