The development history of car audio

Although the audio equipment for the car, just a kind of auxiliary equipment, the running performance of the car has no impact. However, as people's demand for enjoyment is higher and higher, automobile manufacturers also pay more and more attention to the audio equipment of cars, and it is used as one of the bases to evaluate the comfort of cars. The development history of car audio is also the development history of electronic technology. Every major technological progress of electronic technology promotes the development of car audio. As early as 1923, the first car equipped with radio appeared in the United States, and then many cars followed suit and installed radio in the dashboard assembly. At that time, car radios were all electronic tubes. Until the advent of semiconductor technology in the 1950s, car radios had a technological revolution, and semiconductor tubes were gradually replaced by electronic tubes, which improved the life of car radios. In the early 1970s, the cassette recorder entered the market. A kind of car retractable and playback machine that could play cassette tapes appeared in cars. At the same time, the movement began to use integrated circuits. Until the end of the 1980s, the general car audio is based on a card retracting and retracting machine and a pair of speakers. The speakers are divided into two channels, some are placed on both sides of the instrument panel assembly, some are placed in the door, and some are placed behind the back seat. The output power of the retracting and retracting machine is about 20 watts.

Today, car audio has entered a new mileage, to high power multi-channel output, multi-speaker loop back sound, multi - trex laser CD development direction. The world audio manufacturers will also car audio as a special industrial sector, for the special environment of the car, fully consider the sound effect of the carriage, the use of high-tech manufacturing car audio equipment, the broadcast sound effect can be comparable to home audio. The AM/FM sound system of the Lexus LS400 sedan in Japan has 5 amplifiers and 7 split horns, including 2 arched HF horns, 4 broadband horns and a rear-mounted 8 "low frequency horn, which makes the whole car full of stereo loopback feeling.

There are a variety of advanced audio equipment for cars on the market, some car audio enthusiasts will be high-power amplifier and electronic network device placed in the luggage of the car, the ultra-low tone large diameter horn and other types of horn are embedded in the rear window panel and the door panel, the use of independent DC power supply, power output of more than one hundred watts, rich and beautiful sound, high and low wrong, Turn the small space inside the carriage into a pleasant music appreciation room, giving people the enjoyment of beauty.

The running environment of the car is very bad, including vibration, high temperature, noise, electromagnetic wave and so on will interfere with the normal work of the electronic equipment in the car, so the special audio equipment of the car is stricter than the requirements of the design and manufacturing process than the home audio, and the price is not cheap, in this sense, High-performance car audio is actually the top of the line in today's audio world.