The sound system fitted in an automobile can be described by the term car audio. A little different is the stock car audio system which refers to one that was specified by the manufacturer when the car was built. On the other hand, custom car audio installation can involve anything from the upgrade of the radio to a full-blown customization of a car based around its audio equipment like car stereo CD changers.
Most commonly used audio equipment is the radio/tape player/CD player/DVD Player which is generically described as a Head unit. Recent developments in head unit technology have been the addition of CD players with MP3, WMA, AAC, and USB, Bluetooth and Wi-Fi support.
Most modern cars include at least a CD player/ CD recorder, and some have the option for car stereo CD changers, which hold multiple disks either in the head unit itself or in a separate unit usually located in a trunk or console. The main types of CD changers are External Cartridge, Internal Cartridge and Carousel CD changers.
The stereophonic sound, commonly called stereo, is the independent reproduction of the sound using two or more channels audio in way to create a natural impression of the heard sound from several directions, similar to that one in the natural hearing. In popular use, stereo audio of the car means generally the recording of 2 sounds on 2 channels and the reproduction of the sound using the data for more than a loudspeaker simultaneously.
During the time of mono radio, the most common speaker location was in the middle of the dashboard pointing through perforations towards the front windshield. With the advent of stereo system, car audio speakers are located in doors and rear parcel shelves in modern cars. High-end or competition stereo systems like car stereo CD changers have speakers mounted in kick panel enclosures, allowing for larger drivers and better driver placement.
Amplifiers are used for driving the speakers. They provide the necessary music power that is measured out in watts. An amplifier is a really important part of a good car audio system. You should always be sure that the power handling capacity of the speakers that are connected to the amplifier / head unit is larger than the power of the amplifier or head unit itself.
Car audio stereos have become standard inclusions in most modern vehicles, with the option to choose from a variety of car stereo cd changers, which hold multiple CDs either in the main unit or in the trunk or console. Most common types are External Cartridge, Internal Cartridge and Carousel CD changers. They typically use two channels, each providing data for several speakers. As with natural hearing, sound appears to come from various directions. A good car audio speaker system must have an amplifier. Be sure that the total handling capacity of the car audio speakers connected to the amplifier is greater than the power amplifier.