Is it necessary to add a crossover for car audio modifications?

It is necessary to add car audio modificationsCrossoversCar modified horns, power amplifiers, and bass are all products that people who are new to car audio modification know. However, there are many first-time car stereos that do not know what the crossover is and what it does. So under what circumstances does a car modified audio need a crossover?

Generally, the longest crossover in the modified market is a passive crossover, and its function is to divide the audio signal in the amplifier into high and low and low, medium and high tones (that is, 3 channels) and transmit them to each speaker.

The active crossover does not need to be manually installed, which is convenient because it is designed together with the equipment. However, its parameters must exactly match the speaker impedance, and the audio adjustment is not as smooth due to the large error of this type of crossover.

The second type of crossover is called the active circuit divider, which divides the front audio signal and then uses its own independent power amplifier.

Each audio band signal is amplified and sent to the corresponding speaker unit.

It makes the signal loss small and the sound quality is good. However, this method requires an independent power amplifier for each channel, which is costly and complex in circuit structure, and is used in professional sound reinforcement systems.

Necessity should not be discussed here.

It depends on what the system is.

Generally, the original car is a passive crossover system (a few cars are active crossovers, and some are semi-active crossovers), and the passive crossover system needs a crossover, because most of the tweeters can't withstand too much power and will burn out. Therefore, the original car will generally give a small capacitor to the treble series to carry out the most basic crossover.

The same is true for upgrades and modifications, if it is a passive crossover system, it needs to rely on the crossover to divide the frequency. In the case of an active crossover system, there is no need for a crossover. Because the frequency has been cut before or on the amplifier.

Why doesn't the original car audio system use a crossover? Just to save a few tens of dollars on the crossover? The answer is no.

According to experience, car power amplifiers are generally tens of watts, and there is no one or two hundred watts of household power amplification. All frequency dividers have impedance, inductive impedance, if the frequency division is used, then the impedance of the frequency divider will have an attenuating effect on the power (the sound becomes smaller), which is the reason why the speaker sound becomes smaller after the frequency divider, in addition, because the frequency divider also has an inductive reactance, the greater the volume, the greater the inductive reactance, the impact of the inductive reactance on the car machine is large, and it is easy to damage the car machine. In addition, the sense of layering and clarity of the sound after frequency crossover has been improved, but the fullness, roundness, and naturalness of the sound have been lost.

Therefore, whether the car audio is crossover or not should be determined according to my preference.

It's definitely going to add a crossover.

For ordinary full-range speakers, the frequency response range is usually around 200Hz and 10kHz, and the frequency response range of general tweeters is usually around 3500Hz and 15kHz. In this way, the direct parallel connection of the two speakers will produce a peak point at 3500Hz 10kHz, which has serious distortion, and it is necessary to add a two-way frequency divider with a crossover point at 4000 4500Hz.

High-end full-range speaker, frequency response range of 50Hz 15kHz or even wider, this kind of speaker does not need to add a tweeter.

It is necessary to add a crossover for car audio modification. The function of the audio modification crossover is to distinguish the sound signals of different frequencies, respectively to amplify, and then send them to the speakers of the corresponding frequency band for replay, in the high-quality sound reproduction, electronic frequency division processing is required, it can process the frequency of the input signal, so that the frequency of the output signal meets the correlation of the circuit.

In a speaker system, people call the cabinet, crossover circuit, and speaker unit the three major parts of the speaker system, and the crossover is the brain in the speaker, and the crossover circuit plays an extremely important role in whether the speaker system can restore the electroacoustic signal with high quality. Especially in the middle and high frequency parts, the role of the frequency division circuit is more obvious.

In a typical configuration, two two-way crossers are required.

That is, in some high-end models, because they are equipped with a hi-fi system, the front and rear sound fields are equipped with tweeters, such as BMW.

The 7 series requires four two-way or three-way dividers.

If two crossovers are used, the front sound field is a set of speakers, which are two mid-bass, one mounted on the two front doors.

Two trebles, fitted in the right position about the level of the human ear.

The function of the crossover is to divide the sound sent by the CD player or power amplifier to the front sound field into two, and one is to send the medium and low frequency signals to the middle and low frequency speakers; A high-frequency signal is sent to the tweeter. Because the front sound field has two sets of mid-bass + treble on the left and one on the right, two crossovers are needed, one left and one right.

The general car audio rear position is installed with a coaxial speaker, that is, the midrange and treble have been integrated on a speaker, which is also connected to a capacitor for rough crossover, so the rear sound field does not need another crossover, just connect the signal from the CD player or power amplifier to the speaker.

The frequency divider is to separate the treble and bass, or the treble, midrange, and bass, and the role of the crossover must be understood first. Car audio crossover is an audio equipment that can divide the sound signal into several frequency bands, such as a two-way frequency divider is composed of a high-pass filter and a low-pass filter, and a band-pass filter is added to the three-way frequency.

Under normal circumstances, in order to ensure the frequency response and frequency band width of the reproduced sound, high-quality playback systems mostly use up-and-down separate playback in the professional field, and when using up-and-down separate sound playback, it is necessary to use crossovers.

Front door: two mid-bass + two trebles + two crossovers. Then do the shock absorption and sound insulation of the door. That's how the effect comes out.

In many low-to-mid-range family cars, the treble is not good, so it is best to focus on the treble. Achieve the balance of upper and lower tones, so that the desired effect can be achieved.

To upgrade a car audio, you must not only have a good speaker, but also a sound source and power amplifier. A good speaker has low distortion, high sensitivity, good dynamics, and good restored sound. When replacing the horn, pay attention to the impedance of the horn.

and power. The impedance is the same as the original impedance. If it is low, the output current of the amplifier will increase and heat up.

It will also increase. If it's high, it's hard to push. The same goes for power. Too small and easy to burn, too big and difficult to push, the sound is weak and not round, and the result is counterproductive. The original audio system in the car can no longer meet people's needs. To improve sound quality, you must first start with the sound source.

Tape drive frequency.

It's narrow and noisy, so there's no need to think about it. Some people believe that the installation of optical drives on the audio system of the original car is to complete the upgrade task and improve the sound quality. For example, in a Beverly car, the owner adds six or ten CD drivers to the original car's audio system.

A pair of 69" speakers were added to the rear, and there was even an active subwoofer. This method seems to have the function of CD, but in terms of sound quality, there is not much improvement, because it still uses the audio playback system of the tape player, and the signal is received from the FM band of the radio. The frequency response is limited, and the advantages of the CD cannot be brought into play, so the sound will not have a sense of depth and clarity.

From this example, it can be concluded that improving the sound quality should not only improve one aspect, but also improve the whole. But it doesn't mean that the pursuit of high-end equipment depends on your specific situation, that is, the audio system equipment that you can accept.

in order to achieve the best results on the basis of spending the least amount of money.

When setting up the audio equipment system, the collocation of each equipment should be basically the same, otherwise it may cause inconsistency in appearance, function, use and index. From the point of view of circuit structure, the divider.

Essentially an LC filter network consisting of capacitors and inductors, the high-pass channel is a high-pass filter.

Only high-frequency signals are allowed to pass through but low-frequency signals are blocked. The bass channel is the opposite, it only lets the bass pass through, blocking the high-frequency signal; The midrange channel is a bandpass filter.

Except for the frequencies between one low frequency and one high frequency that can be passed, both the high frequency component and the low frequency component will be blocked.

In a real crossover, sometimes an attenuation resistor is added to balance the sensitivity difference between the high and low frequency units. In addition, some crossovers incorporate an impedance compensation network consisting of resistors and capacitors, in order to make the impedance curve of the speaker psychologically flattened to facilitate the driving of the amplifier. The power amplifier of car audio is generally a low-cost integrated amplifier of a single power supply.

This amplifier has a large distortion and weak bass, and it sounds like a strange sound from a layer of separation. Changing to a bi-amp sounds fresh and pleasant, and the bi-amp manifold LM3886 is good. The power supply of the car is a single power supply, and it is possible to add a single power supply to a dual power supply circuit board.

Not at all, if the horn of the car wants to change the sound quality, you must find a professional tuner, master the details of tuning, and then choose equipment with a more reasonable sound system, you can choose a subwoofer speaker.

It can be improved, the resolution of the sound quality should be increased, and the fidelity of the sound field should be adjusted by the corresponding driver speakers.

It can be improved, either through the original audio design in terms of sound quality, or by restoring the sound field.

...Belch. Generally on the midrange horn.

There is no need for a crossover. After all, crossovers also have high requirements. It's not a casual match.

In particular, the crossover should correspond to the horn in order to play the best effect. The opposite is even worse. And the average midrange speaker is actually full-range.

You can do it with or without a crossover.

For those of us who already have a car, we have always been envious of the good sound quality of other people's cars, but the sound quality of their original cars is so boring, in fact, for the owners who have requirements, Yifeng Hong feels that it is time for us to modify the car audio for our cars.

However, there are also car friends who talk about the crossover problem, "I don't have a crossover in the original car horn, can you add two crossovers up", I think many car owners will have this idea, na, is this method feasible or not? Below, Yifeng Xing will tell you whether the original car audio can directly add the crossover through the knowledge of car audio modification.

The original car audio directly plus the crossover will not work.

The crossover refers to the separation of sound signals in different frequency bands, and then sent to the speakers of the corresponding frequency bands for replay.

The lack of the horn crossover in the original car set, the mixed frequency is supplied to the horn unit, and the sound that comes out is unclear.

As the name suggests, the set speaker is a whole, and each pair of crossovers is tailored to the speaker's power, impedance, sensitivity and frequency range.

From a professional point of view, it is not feasible to install the crossover of the set horn on the original car, which will only backfire; There are also some set speakers on the market that do not have a crossover, why is that?

These set speakers belong to the enthusiast level, and need to be pushed and distributed separately by the power amplifier and the host or processor, and the original speaker cannot add a crossover, is there any other way to improve it? Of course, the easiest and most convenient is the most popular processor nowadays, after processor allocation and tuning (balancing, latency, EQ, etc.).

The delay function of DSP can solve the problem of different distances from each speaker unit to the listening position, creating a better sound field effect. The EQ adjustment function can solve the problem of unsmooth frequency response curve caused by the reflection and absorption of materials in the car, so that the sound is closer to the real and natural sound. The crossover function can replace the crossover to send the sound signals of different frequency bands to the speakers of the corresponding frequency bands, solve the problem of the connection of high, medium and low bass, and make all the speaker units work better together.

Another way is to directly change the set of speakers, and don't think about some unrealistic detours.

Hello, I am helping you sort out the answers to your questions, please wait a while Hello, I am your exclusive technician, attentive, careful, and dedicated to answering your car questions, and finding solutions and solutions to the corresponding problems for you! If the vehicle wants to reinstall a pair of horns, it is necessary to install a vehicle crossover in the original horn line, and the horn is split screen.

Questions. Add a small midrange speaker to the center console, with the installation of a crossover.

The work of the speaker can be realized without installing a crossover, but there is no way to realize the conversion of high and low tones, and the conversion of sound quality can be achieved by installing a crossover.

Questions. What kind of crossover does the 2-inch Alpine use?

This kind of direct selection of two-way crossovers can be, generally like audio modification shops or** above are sold, **in a few tens of yuan to a hundred yuan or so.

Questions. Recommend one.

Doctor's use can be used.

Questions. Approximate how much.

The doctor's crossover is about 60-80 yuan within 100 yuan.

Questions. Thank you. You're welcome.

Three full ranges? Three of the four speakers are connected to the full range? Are you a two-way box?

Or a four-speaker three-way box? One low, two medium, one high, right?

It depends on how often your box is going to be.

Three-way frequency: one low, two medium, two high, just connect your two tweeters, the positive pole to the positive pole, and the negative pole to the negative pole in parallel.

There is no need to change the crossover.

Four-way frequency, one low, two medium, one medium-high, and one high, you need to change the crossover To change the capacitor bass and midrange capacitance, the mid-high bass and midrange capacitance do not move, and the medium and high use 10 micro-method The treble uses the micro-method Try to see that the higher the frequency, the smaller the capacitance.