Audio Systems

A stock car audio system refers to one that was specified by the manufacturer when the car was built. This is the audio system that comes ready to be used when a vehicle is purchased. A custom car audio installation, on the other hand, can involve anything from the upgrade of the radio to a full-blown customisation of a car based around its audio equipment. Events are held where entrants compete for the loudest or most innovative systems.

Audio components typically found in vehicle multimedia systems:

  • Speakers

  • Amp

  • Head unit

  • Headphones

  • Sound processor

  • Crossovers

The most common and familiar piece of audio equipment is the radio/tape player/CD player/DVD player – referred to generically as the head unit. Various aftermarket units are available corresponding to different needs, such as iPod control, Built-In Bluetooth, Audio Quality etc.

In modern cars, the speakers are usually located in doors and rear parcel shelves.

High-end audio systems include Component Speakers, which consist of

  • A matched tweeter (small, high frequency)

  • A midrange (medium, medium frequency)

  • A woofer (large, low frequency) set.

-These component pairs are available in two- and three-speaker combinations. They also include an audio crossover which limits the frequency range that each component speaker must handle. This enables each cone to produce its optimal frequency for maximum sound quality & volume.

Custom subwoofer box gl63

In addition, subwoofer(s) are provided for bass and sub bass (ultra-low frequency), which is felt more than heard depending on the sub frequency. A lower frequency is picked up less by the human ear but is increasingly “felt” as the vibration level rises. Sub bass is omni-directional, which means that the human ear does not have the ability to distinguish the direction where the sound is from. Humans cannot hear subsonic frequencies (below the frequency of 20hz) but are however, able to feel it.

Crossover systems can be active or passive crossover networks. Active electronic crossovers divide the signals before they are sent to the amplifiers, giving a dedicated amplifier channel to each individual driver in the component system. Passive crossover networks divide the signal after amplification, making it possible to run multiple speaker component sets using just one channel.