The history of car audio dates back to the early 1900s. George Frost carried out the first car audio experiment in 1922. The evolution of car radios began with the Transitone Th-1, in 1927. The first FM rollover tape in cars was introduced in 1952. In 1965, the 8-track player was introduced in Ford vehicles. In the early 1960s, cassette tapes were introduced, but did not become popular until 1977. FM became more popular in the 1980s, and the first car compact disc players were introduced in the 1980s. In the early 2000s, the XM satellite was introduced to the country. Car audio has had such an impact on vehicles over the past seven decades. Car audio has evolved from the simplest to the most complex forms. The car audio system model varies with each vehicle model. The history of the automobile began in the early 1900s, when car radios weren't even an idea. “The first car radios were receivers that used the battery voltage of 6.3 volts at the time to operate the filaments and generated the required high voltage using a vibrator to drive a step-up transformer.” “The receivers have taken more steps than the typical home receiver to ensure that sufficient gain is available to allow the AGC to mask signal fading when the car is moving.” "Soon after, when cars switched to 12 volt batteries, the same arrangement was used where, in place of tubes, 12 volt heaters were used (http://ezinearticles.com/?Origin ,-Development-And-History-Of-The- Car Stereo System&id=924534).The car stereo industry was founded in the 1920s. Although radio was created in the early 1900s, it did not was widely used only in the 1920s. George Frost carried out the first car radio experiment in 192...... middle of paper ...... from 4 inches to 12 inches Car speakers have. two different types of component and coaxial Component speakers are part of a speaker set Component speakers depend on each other to deliver a full range of sound Most of the time this would include a subwoofer for bass. and tweeters for clarity Coaxial speakers are called two-way speakers. In 1954, The Acoustic Research Company released the Ar-1W, a high-excursion woofer. They included their subwoofers in compacted and sealed speaker enclosures. Bass from the speakers dropped to 20Hz levels without being connected to an equalizer. Works Cited Cosper, Alex. Www.EHow.Com. Contributor Ehow. Internet. 10/01/2011Épand, Victor. Www. ezinearticles.com. Internet. 1-10-2011Staff, CAE. www.caraudiomag.com. Car Audio & Electronics, Formation Media, Inc. Web. 2-3-2011Miller, Gerald. Personal interview. 1-18-11