- Woofer: Larger arealoudspeakerthat reproduces bass, mid-bass and midrange (50 Hz to 5,000 Hz) well. They have rigid rim and their size can range from 1.2 “to 18”. It is suitable for playing bass drum, drum, piano, bass and guitar sounds
- Subwoofer: Your playback is further down than the playback of the woofers. It is a type of loudspeaker used to reproduce low frequencies (bass and sub bass), usually below 45 Hz. He is the speaker of which Automotive Sound lovers drivers are more proud. It is suitable for playing double bass, electronic bass and drum bass sounds. There is no specific location for your installation, but care should be taken not to obstruct it with luggage or to disturb the circulation inside the car.
- Mid-range: a loudspeaker used to reproduce the midrange frequencies, usually between 300 Hz and 5,000 Hz. Thus, they can reproduce most musical instruments, but they reproduce even the range that covers the human voice. A Mid-Range should be positioned at the bottom of the car and also behind the back seat on the inside lid of the trunk, if possible aimed at the occupants. They usually have size less than 8 “.
A variation derived from this type of loudspeaker is the mid-bass, focused on sounds in the mid-bass range (between 50 and 500 Hz, typically between 100 and 300 Hz).
- Tweeter: Small speaker (ranging from 0.5 “to 3”), which reproduces well the highest sounds (frequency of 5,000 Hz on). It should be aimed at the ears of the occupants of the car, and should be installed on the dashboard or above the doors. This system is responsible for the reproduction of the stereo effect, a sound characteristic that conveys the sense of spatial distribution of music in the environment. The most modern vehicles already leave the factory with an exclusive place for installation of this device that is usually next to the external mirrors.
- Triaxial: The triaxial system is not quite a speaker, but a set of technologies. Within a same housing are placed a woofer, a mid-range and a tweeter. The frequency range it operates ranges from 50 to 20,000 Hz, and is suitable for reproduction of allinstruments except double bass, electronic bass and drum bass.
- Coaxial: similar to triaxial, but without mid-range. It has a woofer and a tweeter, much used in original speaker kits. It is used for reproduction of all instruments except double bass, electronic bass and drums.
But how does the speaker work?
Basically a speaker consisting of a cone, or diaphragm, basket, suspension and tripod. The suspension, or surround, is a flexible material flap that allows the cone to move, and is attached to the driver’s metal frame, called the basket. The diaphragm, usually made of paper, plastic or metal, is attached to the wide end of the suspension. The narrow end of the cone is connected to the voice coil. The spiral is attached to the basket by the tripod, a ring of flexible material. The tripod holds the spiral in position, but allows it to move freely back and forth.
There are two types of amplifier. The so-called Mosfet, which amplifies the signal sent by the RCA outputs of the main unit, and the so-called Booster, which amplifies the signal sent by the amplifiedoutputs of the main unit. Mosfets have better audio quality, as they not only amplify the sound but retain its quality. However, boosters are still more used in Brazil, because they are cheaper.