To understand car stereo speakers, it helps to think of sounds as falling into three basic categories: high-frequency sounds, low-frequency sounds, and mid-range ones. Most people think of low-frequency sounds as bass and high-frequency ones as treble. The woofers and subwoofers of a car stereo’s speaker system handle the bass sounds, while tweeters handle treble.
The sound of car alarms going off in the middle of the night is a now familiar part of the urban landscape. There is a lot more to the car security systems of today, though, than simple noisemakers. Car security systems have become more sophisticated, and many now sport a dizzying array of features.
The basic purpose of the amplifier in a car audio system is to amplify the sound coming from the pre-amplifier before feeding it to the speakers. Since most installed car audio system amplifiers have relatively low power, it is common practice among car audio enthusiasts to install an aftermarket amplifier. Although many people think the main reason for getting a higher power amplifier is simply to make the car’s audio system louder (and it will do that), an amplifier also improves sound quality at all volume levels.