6. Transmission mechanism.
Host:
Car audio source. The host includes only RADIO receiving function RADIO host, radio and MP3 host, CD host, MP3 and CD disc box, CD and navigation host and CD/DVD/ car MP5 host, DVD player and so on.
Loudspeaker:
A vehicle audio unit that converts electrical energy into sound waves. These include treble, alto, bass and subwoofer speakers.
Power amplifier:
Power amplifier is a power amplifier. The most basic device in a sound system is the amplifier, whose job is to amplify weak electrical signals from a signal source (or, in professional audio systems, the mixing console) to drive the sound through speakers.