The crossover used in the car is basically the same as the crossover used in the home and other occasions.
Introduction to crossoverPassive crossover network (Crossover Network), domestically called "crossover", its design is affected by a lot of variables and considerations, so it is a very complicated task. (There are passive crossovers and active electronic crossovers)
Passive crossover
The "function and purpose" of the passive crossover is between the amplifier and the speaker. Since a single speaker cannot achieve the "full frequency response" (the full frequency band is 20HZ-20KHZ, which is the hearing range of the human ear), the single speaker size is used Different physical bandwidth response to achieve the required "full-band response" purpose, and therefore produced a way of using multiple sizes of monomers on the same channel. The passive microphone function is responsible for dividing the full frequency band of the amplifier into sounds of different frequency bands, and sending them to the speakers of different sizes to show their due characteristics. The resulting multi-channel speaker combination or "crossover horn" has its uses and multiple choices from one-channel car horns to multi-channel speakers.
compositionThe component composition of the passive crossover: L/C/R, that is, L inductance, C capacitor, and R resistance, which can be flexibly used in the frequency division network according to the characteristics of each component's frequency division.
L inductance: Its characteristic is to block higher frequencies and only let lower frequencies pass, which is also called a "low pass filter (Low Pass Filter). How much the lower frequency passes is determined by the inductance of the "L inductance" To decide, the unit of inductance is represented by "μH, mH". Common inductor materials include air core inductors, iron oxide inductors, silicon steel chip inductors, etc. Iron oxide inductors, silicon steel chip inductors usually only require high inductance values It is only used in situations where low DC resistance cannot be obtained from air-core inductors. Because iron-core inductors have the nature of magnetic saturation and cause distortion in high-current situations, iron-core inductors are a compromise product.
C capacitor: Its characteristics are just opposite to the inductance, that is, it blocks frequencies from passing through and allows higher frequencies to pass, which is called a "high pass filter (High Pass Filter). How much high frequency passes is determined by the capacitance of the C capacitor. Its unit is "ÎœF". There are many types of capacitor materials, but non-polar capacitors are used in passive crossovers.
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