Crossover: INPUT: audio input port WOOFER: midrange TWEETER: treble
Under normal circumstances, the frequency divider has three interfaces as above. "INPUT" is the input terminal, which is divided into positive and negative poles. It is connected to the output terminal of a certain channel of the power amplifier. There is an audio line connected in the middle. The length of the line is better according to the matter. It should be noted that the two ends of the audio cable correspond to the positive and negative connections. "WOOFER" is the woofer output terminal, and "TWEETER" is the treble output terminal. These two terminals are usually located at the other end of the crossover (on the same side), and they also have positive and negative poles. Use the audio cable to connect the positive and negative poles of the mid-woofer and the tweeter. Also note that the two ends of the audio cable should be connected correspondingly. Under normal circumstances, a set of crossover speakers should be equipped with two crossovers, two mid-woofer speakers and two high-pitched heads. Form a set of left and right channels respectively (1 crossover + 1 mid-woofer + 1 tweeter) The connection method is roughly as above, relatively simple
In the case of LC frequency division, the “+†before the frequency divider is connected to the “+†of the amplifier output, and the “—†is connected to the “—†of the amplifier output. Pay attention to the next frequency divider. The frequency division output has "H (high)" and "L (low)". If there is an intermediate frequency, there is also "M (medium)", generally only high and low. For the 12-step crossover (more commonly used), the “+†of the treble output is connected to the “-†of the speaker, and the “+†of the bass output is connected to the “+†of the speaker. In this way, the phase shift produced by the LC can be compensated in the wiring. Corresponding to the electronic crossover, connect the corresponding speaker directly according to the output of the amplifier connected to the crossover. Similarly, for the 12-step electronic crossover, the tweeter is still reversed, corresponding to the 24th step, and the tweeter is connected ("+" is connected" +", "—" followed by "—").
How to connect the crossover to the speakerConnecting a capacitor in parallel with an inductance coil is a high-frequency output, a capacitor connected in series with an inductance coil is a low-frequency output, and a capacitor and an inductance are connected in parallel in the frequency divider and a capacitor and an inductance are connected in series for a midrange output!
If it is a -6dB frequency divider, the treble has only series capacitors, and the bass has only series inductance. The midrange may be series capacitors and then parallel capacitors, or series inductors and parallel capacitors!
Is it necessary to add a frequency divider for car audio modification?But it depends on what system it is
Generally, the original cars are passive crossover systems (a few original cars have active crossovers, and some are semi-active crossovers). Passive crossover systems require frequency dividers, because most trebles cannot withstand excessive power. It will burn. Therefore, the original car usually connects a small capacitor in series with the tweeter to perform the most basic frequency division.
Upgrade and modification are the same. If it is a passive crossover system, it needs to rely on a frequency divider to divide the frequency. If it is an active frequency division system, no frequency divider is needed. Because the frequency has been cut before or on the power amplifier
Is car audio crossover necessary? It depends on the function of the car amplifier you buy. A professional car amplifier does not need a frequency divider, because the amplifier has its own high and low pass filter switch, but it may not be for each channel. Many of them are front left, front right. The door is a filter switch, and the rear left and right doors are a filter switch. If the frequency divider is added, each door needs a frequency divider, or the front left and front right doors need a frequency divider, and the rear left and rear doors need a frequency divider. The right door does not have a frequency divider, because the front left and front right cars need to have a high-frequency head to have a crossover to have a good effect! It is recommended to increase the frequency so that the effect will be better!
If it is a passive frequency division system, it needs to rely on a frequency divider to divide the frequency. If it is an active frequency division system, no frequency divider is needed. Because the frequency has been cut before the power amplifier, or on the power amplifier. Generally, the original cars are passive crossover systems (a few original cars have active crossovers, and some are semi-active crossovers). Passive crossover systems require frequency dividers, because most trebles cannot withstand excessive power. It will burn.
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