It is better to actively divide or passively divide the car audio

Active frequency division is the frequency division of the audio signal of the host in the host ** processor before being amplified by the power amplifier circuit. The principle is that the audio signal is sent to the host processor, and the audio signal is divided into low-frequency signal and high-frequency signal according to the frequency response range in the host processor, and then the two signals are input into the amplification circuit and amplified separately.

Passive crossover means that the audio signal is amplified by the power amplifier circuit and then divided by the passive crossover, which is input to the corresponding tweeter or woofer respectively. The principle is to filter out the high-frequency sound by the inductor circuit, leaving the low-frequency sound, and then input the low-frequency sound to the low-frequency speaker. The electrolytic capacitor filters out the low-frequency sound and leaves the high-frequency sound, which is then fed to the tweeter.

Active frequency division is processed at the input end of the power amplifier, the load is the input end of the power amplifier, the impedance is high and stable, and it is not easy to produce the situation of frequency drift, the signal of the frequency division processing is amplified by the power amplifier and directly drives the horn in the middle of the missing nonlinear distortion components, the distortion is reduced, the power transmission ratio of the intermediate intervention loss is improved, and the transient of the speaker is also improved without the intervention loss, the analysis of the audio system has been improved, and the details are displayed more clearly. Moreover, for changes in the automotive environment, the frequency divider can be adjusted according to the position of the speaker, so that the frequency connection is smoother, and the sense of hierarchy will be explained clearly. Each amplifier operates in a different frequency band to reduce intermodulation distortion and distortion. Different speaker signal transmission can use signal lines and speaker lines that are more suitable for a certain frequency band, so that the signal transmission efficiency or sound characteristics are more stylish.

However, due to the need to use multi-channel power amplifier drive for active frequency crossing, each speaker needs to drive an independent channel, which is costly and difficult to debug, and most car audio modifications still use passive crossover.

Whether it is active or passive crossover, it should be said that your sound effect shall prevail, and it depends on your brand**, generally speaking, the brand is good, **high, his effect must be better, of course, everyone's **appreciation ability may be different.

The principle is that the audio signal is divided into the host processor (CPU), and the audio signal in the host processor is divided according to the frequency response range in the host processor, and then the two signals are input into the amplification circuit separately and amplified separately.

The difference between an active three-way and a passive sound system.

Active frequency division is processed at the input end of the power amplifier, the load is the input end of the power amplifier, the impedance is high and stable, and it is not easy to produce the situation of frequency drift, and the signal of the frequency division processing is amplified by the power amplifier and directly drives the horn in the middle of the missing nonlinear distortion components, the distortion is reduced, and the power transmission ratio is improved without the intervention loss in the middle.

Similarly, without the transient change of the intervention loss speaker, the analysis of the audio system has been improved, the details are displayed more clearly, and the crossover point can be adjusted according to the position of the speaker for changes in the automotive environment, so that the frequency connection is smoother, and the sense of hierarchy will be explained clearly.

The active sound division of the audio is also called the active frequency division, is the audio signal of the host in the host before amplification by the power amplifier circuit in the host processor for frequency division, the principle is that the audio signal to the host processor (CPU), in the host processor in the audio signal according to the frequency response range is divided into low-frequency signal and high-frequency signal, and then the two signals are input into the amplification circuit respectively, and the frequency division is digital.

Passive crossover, also known as passive crossover, is the audio signal amplified by the power amplifier circuit and then divided by the passive crossover, respectively, input to the corresponding tweeter or woofer, the principle is to filter out the high-frequency sound by the inductive circuit, leaving the low-frequency sound, and then input the low-frequency sound to the low-frequency speaker. The electrolytic capacitor filters out the low-frequency sound and leaves the high-frequency sound, and then inputs it to the tweeter, and the frequency division method is adjusted by the variable resistor to adjust the fuzzy type.

The difference between an active three-way and a passive sound system.

Active frequency division is processed at the input end of the power amplifier, the load is the input end of the power amplifier, the impedance is high and stable, and it is not easy to produce the situation of frequency drift, and the signal of the frequency division processing is amplified by the power amplifier and directly drives the horn in the middle of the missing nonlinear distortion components, the distortion is reduced, and the power transmission ratio is improved without the intervention loss in the middle.

Similarly, without the transient change of the intervention loss speaker, the analysis of the audio system has been improved, the details are displayed more clearly, and the crossover point can be adjusted according to the position of the speaker for changes in the automotive environment, so that the frequency connection is smoother, and the sense of hierarchy will be explained clearly.

The speaker crossover can improve the detailed performance of the sound to a certain extent, and the sound quality is more related to the quality of the audio source amplifier, and the crossover can not greatly improve the sound quality. Only in the original sound quality of the audio in the audio as far as possible to separate the different frequency bands, respectively drive the corresponding speakers, by the multiple speakers to restore the sound field fidelity will be higher, but also cleaner.

For amplifiers without crossover, only one full-band audio signal is output to drive the speaker. The real full-band high-quality speaker is very rare, either the bass is enough and the treble component is missing, or the middle and high tones are rich and the low frequency is missing, in short, it is difficult to obtain high sound quality when the amplifier directly drives a speaker. The structure and material of the speaker also determine the frequency band in which the speaker works, so the speaker has a difference in bass, midrange and treble.

Each speaker has its own area of expertise, so dividing the audio signal output from the amplifier into three frequency bands or two frequency bands to drive the corresponding speaker separately will achieve satisfactory results.

The passive crossover is an LC filter composed of inductance and capacitance, and the common crossover boards in the speaker belong to the passive crossover. After the audio signal passes through a "low-pass filter", the mid-to-high components are filtered out, leaving only the bass components to drive the woofer. After the audio signal passes through a "high-pass filter", the mid-bass component is filtered out, and only the high-frequency signal is retained to drive the tweeter.

It can be seen that the crossover only separates the high, medium and low frequencies in the audio, which can improve the resolution and improve the detail performance. After the frequency band is separated, the bass is not muddy, the midrange is full, and the treble is slender. Therefore, today's loudspeakers are equipped with a crossover device, either with a crossover board or a simple crossover with a non-polar capacitor.

The crossover quality and listening effect of the wheel, the crossover board is better, and a crossover point can be specially set according to the structure of the speaker unit cabinet. Therefore, the more expensive the divider, the better, but the right one is the best.

With a crossover, the sound system can only be reasonably displayed, and the sound quality of the sound without a crossover will be held back, just like no matter how good the sound is, a pair of garbage speakers will not make a good sound. If you want to get high sound quality, you must first have a high-quality sound source, front, and secondly, the quality of the power amplifier. If the quality of the audio source is poor, then no matter how good the amplifier is, it will not release good sound, but only infinitely amplify the shortcomings of the audio source.

It can make the sound quality better, because the crossover is able to separate the frequencies of the sound, which can make the surround effect of the speaker better.

The car audio package speaker will be equipped with a crossover as standard, the main function is to decompose the output signal of the audio host or power amplifier into high-frequency, medium-frequency and low-frequency signals, and send sound to the speaker at the output. This causes the speaker to emit the frequency range that it is allowed to work in, so that the human ear hears the clearest and brightest sound.

The crossover in the car has a great impact on the sound quality effect, and the higher the quality of the crossover in the audio, the better the sound quality will be.

The passive audio system is simpler, more cost-effective, and easy to be accepted by more car owners, so the passive audio system is the first choice for many audio enthusiasts to upgrade their audio for the first time. The active sound system has better sound quality, more tuning, more accurate sound field positioning, and richer details, regardless of the high and low volumes, the layers are just as clear.

The difference between the active three-way frequency and the passive audio system is: the active crossover is processed at the input end of the power amplifier, the load is the input end of the power amplifier, the resistance is high and stable, and it is not easy to produce frequency drift. Similarly, without the transient change of the intervention loss speaker, the analysis of the audio system has been improved, the details are displayed more clearly, and the crossover point can be adjusted according to the position of the speaker for changes in the automotive environment, so that the frequency connection is smoother, and the sense of hierarchy will be explained clearly.

The active sound division of the audio is also called active frequency division, which is the audio signal of the host in the host processor before amplification by the power amplifier circuit, the principle is that the audio signal is transferred to the host processor (CPU), and the audio signal in the host processor is divided into high, medium and low frequency signals according to the frequency response range, and then the divided signals are input to the power amplifier for separate amplification, and the power amplifier only plays the role of an amplified signal, eliminating the frequency divider and reducing the loss in the transmission process. The crossover method is digital. Dividing the digital signal directly through the town (electronic crossover) has much smaller frequency divider loss than the analog signal, and can reproduce good sound quality.

Passive crossover, also known as passive crossover, is the audio signal amplified by the power amplifier circuit and then divided by the passive crossover, respectively input to the corresponding tweeter or woofer, the principle is to filter out the high-frequency sound by the inductive circuit, the remaining low-frequency sound, and then input the low-frequency sound to the low-frequency speaker, filter out the low-frequency sound by the electrolytic capacitor and leave the high-frequency sound, and then input to the tweeter, and the crossover mode is adjusted by the variable resistance fuzzy.

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The connection is generally divided into three parts:

1.Electrical: long electric, acc, ground.

2.Enter the letter sermon number:

Left channel, right channel (two-in).

Front left, front right, rear left, rear right, ultra-low L+R (6 into the scrambled limb) output to the power amplifier, corresponding to the speaker unit, you can.

Active frequency division, also known as electronic frequency division, is a kind of audio system that divides the frequency band through the electronic frequency division circuit before the amplifier is amplified, its circuit is more complex, and each speaker is required to occupy an independent channel channel, such as two-channel two-way stereo sound, which is required.

Four-channel amplifier circuitry. After using active crossover, the woofer in the speaker does not need a crossover, but a high and low level.

The sound horns are connected to the corresponding channels of the amplifier. Speakers with active crossover will have a better listening experience, but the cost is higher.

Active frequency division is also called electronic frequency division, is a kind of audio system that divides the frequency band through the electronic frequency division circuit before the amplifier is amplified, its circuit is more complex, requiring each speaker to occupy an independent channel, such as two-channel two-way stereo, to four-channel power amplifier circuit. After using active crossover, the woofer in the speaker does not need a crossover, but connects the woofer to the corresponding channel of the amplifier. Speakers with active crossover will have a better listening experience, but the cost is higher.

Active systems such as two-way and three-way frequency.

Active systems. The crossover can make the treble and mid-bass work in the appropriate frequency range, the original components such as capacitors, resistors, and inductors increase distortion, and the crossover has power loss and reduces the efficiency of the power amplifier.

It is not complicated to do active information and line macros, and most of them are supported by DSP functions, and it needs to be considered that each speaker needs an independent power amplifier.

The active system has high requirements for the debugger, and the original factory data is lost, so the sound phase, frequency division point, and EQ must be matched according to the model. If you want to continue to upgrade, there are many products to pay attention to, such as wire, process, debugging, installation, sound source, and even soldering solder wire, changing the power cord, etc. The pointing of the horn installation and the internal treatment of the door panels can all bring about a makeover, but the equipment itself is still the basis for commissioning.

Construction parts: Particularly many.

Car audio products are not updated quickly (except for DSP), and the gap between manufacturers is small.