How to connect an amplifier and subwoofer to a car radio: you are your own master

The concept of “Chinese car radio” includes all audio equipment of both local and popular global brands produced in China. Due to the fact that the devices are manufactured under the supervision of specialists from the companies that own the brands, they are certified according to international standards. Therefore, connecting a Chinese 2 din radio according to the diagram in the instructions will not be difficult, and the designation of the terminals does not differ from devices from European or Japanese manufacturers.

Connection diagram for subwoofer and AUX video outputs

Android radio pinout

Pinout of the radio on 8.1 Android

If you recently ordered a multimedia device on Aliexpress, this pinout diagram will be extremely useful to you, because most likely it will suit you perfectly. Of course, one pinout will not be enough. We need to know which wire of the Chinese Android radio will be responsible for what, well, let’s take a look.

Color value of radio tape recorder wires on Android

Of course, the colors and meanings of the wires on a Chinese radio will most likely not match the wires on your car. To find out the meaning of your wiring, we suggest looking at the article about the pinout of the radio of your brand on our website. We most likely have one. There we make sure to indicate the meaning of the wires of each color.

Adapter for connecting a radio to Android

Next, to connect a multimedia radio from the Middle Kingdom, you will need a plug to connect the wiring. This should be included with the radio, but it may not suit you, or it may be an adapter for the Euro ISO connector. There is no need to be sad. After all, you can purchase an adapter for your car to ISO. Yes, such “dancing with a tambourine” may be necessary, but believe me, this is far from difficult and rather depends on the brand of the car.

Pinout of radio chip/plug, color meaning of wires, video

To consolidate the material and better understand, let's look at the pinout of the radio chip/plug, the color meaning of the wires, first in the photo and then in the video.

The meaning of car radio wires from Aliexpress

Android radio connection diagrams

Android radio connection diagram

A little more detailed connection diagram

Video of connecting a radio on Android

Connection diagram for AUX video and subwoofer

Of course, you definitely need to know which wires and connectors are responsible for connecting the AUX and subwoofer on 2 DIN Android radios.

And, of course, a video on how to connect a subwoofer to a Chinese radio:

Source

Connecting speakers

The following wires are responsible for connecting the speaker system of a Chinese 2 din radio:

white;
grey;
green;
violet.

The first 2 connect the front speakers, the rest - the rear ones. The speakers have 2 wires - positive and negative. A pure color is “+”, and a similar one with a black stripe is “-“.

It must be remembered that failure to observe polarity when connecting speakers will lead to sound distortion, since the devices will operate in antiphase.

If the standard control unit on a car is being replaced with a “Chinese” one, and the markings of the speaker wires do not correspond to the ISO connectors, then you must remember that a cable with a wide terminal is positive, and a cable with a narrow terminal is negative.

If the speaker outputs on the connected car player have additional “tulip” type connectors, then it is advisable to use them if the same connection is also available on the car speakers.

Connection options

Depending on the model and operating system, connecting the phone to the radio can be done in several ways:

via USB interface;
via Bluetooth;
via analog audio input;
via a radio transmitter;
via emulator.

For connections, use known good cables and wires.

Which radio do you recommend buying?

How to connect your phone to the radio via USB

To connect your mobile phone to the car radio, you will need a suitable cable. After turning on the head unit, the handset screen will light up and music will start playing in the car. At the same time, the gadget’s battery will be charged. If the car radio was turned on in a different mode, then after connecting the plug to the USB port it will switch to the music player. A mobile phone connected to the standard radio via a USB interface must support operation in removable storage mode in the same way as a flash drive or external hard drive.

Are you a car driver?! Then you can take this simple test and find out... Go to the test »

How to connect your phone to the radio via Bluetooth

You need to check which profiles are supported by devices before connecting to the radio via Bluetooth. To play music through your phone, you need the A2DP protocol. With support for the HFP/HSP profile and a microphone, the car radio will help you talk on the phone hands-free.

To be able to control music listening, support for the AVCRP protocol is required. Before connecting the phone, you should turn on Bluetooth on the radio. To do this, press the source switch button until the desired mode is selected. Then the car radio and phone (smartphone) are paired.

To do this, open the BlueTooth settings on the latest device. The handset must be visible to other devices, after which the search for the head unit starts. During setup, the gadget must be located next to the car radio so that problems do not arise.

After a few tens of seconds, a line will appear in the list, which may contain the model or brand of the player or the words Bluetooth, Music, Hands free or others. To connect, you must select the desired device by entering the PIN code when prompted. When the pairing process is completed correctly, the car radio will beep and its status will change in the Bluetooth settings, indicating that the device is connected.

After pairing, you need to check the music playback and the ability to make calls (if this function is available).

To do this, turn on music from your mobile phone. The sound should be output through the speakers in the car. Otherwise, the audio output channel via Bluetooth is checked. When you press the listening control buttons on the head unit, the tracks should switch.

To check the speakerphone through the radio, you will need an assistant with a second handset. He must call the phone paired with the autoplayer. When a call arrives, the caller's number or name will appear on the display of the head unit. The ringtone will be played on the phone itself. To receive a call, press the button with the handset icon on the radio.

AUX connector

Using this method, you can connect your old phone to a car radio that has an additional audio input (aux) to listen to music. If your mobile device is equipped with a standard 3.5 mm jack, then you will need a shielded stereo cable with appropriate plugs for connection. One of them is inserted into the socket on the phone, and the other into the car radio with AUX.

If the handset is equipped with a non-standard socket, then you can connect it to the AV radio input or via AUX by making an adapter cable. It requires an audio cable with a stereo jack or AV connector and a standard headset. Both headphones are cut off, and the ends of the cables connected to them are stripped.

Common wires have the same color. They are soldered to the audio cable wire connected to the negative terminal of the plug. The remaining two wires are the audio output from the phone. They connect to the left and right channel pins of the audio cable. The advantage of this method is the possibility of hands-free communication through the radio.

Transmitters

Music from the phone can also be broadcast via radio to a car radio, which has neither a USB port nor an audio input, through a transmitter. It is powered by the cigarette lighter in the car. The choice of transmitter depends on the design of the phone. If your smartphone does not have a headphone jack, then you should use a Bluetooth transmitter. If this is the case, then to connect to the radio you need an FM transmitter with a linear audio input or a USB port.

Bluetooth transmitter

This device combines a module for playing music via Bluetooth and a low-power VHF radio transmitter. He streamed music from his phone to outdated radios. Connecting mobile devices to the Bluetooth transmitter is carried out in the same way as to a head unit with a similar interface. Then the broadcast is tuned to a frequency free from terrestrial radio stations. Control can be carried out from the transmitter itself using the AVCRP protocol.

FM transmitter

Connecting your phone to an old tape recorder via an FM transmitter can be done either through the audio input or via the USB port. In the first case, you need to connect with an audio cable. You can control your music listening from the phone itself.

In the second case, the connection is made in the same way as to a radio with a USB port. There are FM transmitters specifically designed to charge devices connected to it. The output current of the port in this case is at least 1 A, thanks to which the gadget is effectively charged simultaneously with the transmission of digital audio.

Emulator

This device converts the MTP protocol to a removable disk protocol, allowing you to connect smartphones with Android 5 and later, as well as an IPhone, to a radio that supports flash drives, in order to listen to music recorded on them and expand the capabilities of a budget head unit. If the emulator has additional drivers, you can use and manage an external non-USB hard drive, diagnostic adapter, or other useful devices.

How to connect a subwoofer to a standard radio, without line outputs

There is a desire to listen to your favorite performers while driving, there is a car radio, but, unfortunately, it does not give the desired effect, the music plays, but I would like something more powerful. This is why you need a subwoofer, but connecting a subwoofer is still accompanied by some difficulties. Like any other amplifier, you need to supply power to it, and also connect the cable through which the audio signal will be transmitted.

And here, if you are not an advanced radio amateur, you can reach a dead end, because in the car radio you do not find a single hole where you could connect the desired amplifier. A logical question arises: is it possible at all, and if possible, how to connect amplifier for standard radio?

1) Purchasing a new radio

The first method is good for those who are poorly versed in the radio business, but do not have any special financial restrictions. You just need to go to a car store and buy a new, more modern radio, and it is quite possible that all the issues will be resolved by themselves. This method is really not bad, but it requires some formalities. For example, your car must support the original head unit you purchase. Also, the radio must have a support function so that the connected subwoofer works and gives excellent sound. Well, the last important point is the cost of head units; with the current crisis, their price has jumped to the price of spaceships. But, as already written above, if money is not a problem, then everything is solved immediately, otherwise read on.

2) Contact radio amateurs

So, if you are not a millionaire, and also do not understand wires very well, then your best option would be to seek help from experienced radio amateurs.

You can find them in small workshops. Some specialists literally in a matter of minutes, right before your eyes, will disassemble your radio, solder additional wires and bring them out to RCA connectors. The scheme is simple, but 100% working. You can then connect an amplifier or subwoofer to the output contacts. If the master is good, he will provide you not only with excellent sound, but also complete safety inside the car.

3) Install linear converter

The next option is suitable for those people who themselves are poorly versed in the intricacies of radio engineering, but do not want to turn to others. In this situation, the best solution is to purchase a level converter. It is through it that it will be possible to connect two devices to each other, a head unit without the outputs we need and a subwoofer or amplifier. You can buy this converter at any car audio store. This device itself is simple, and therefore we will not delve into its internal world, but on the outside it has two tulips on one side (the so-called audio connectors - RCA), and on the other there are four wires.

Slotted box for subwoofer Ural TT 12 with port setting 35 hz

Even a schoolchild can cope with connecting the converter, the main thing is not to confuse the contacts; plus and minus are connected to the right speaker, the remaining two wires are connected to the left speaker. That's it, your high-level frequencies turn into low-level frequencies and you enjoy the music to the fullest extent possible. And one more important point is that due to such a connection, all your electronics will be completely safe.

4) Choose an amplifier or subwoofer with a low-level input

The last option is perhaps the simplest, but again it all comes down to money. That is, having a certain amount on hand, you again go to the electronics store and buy a so-called active subwoofer or amplifier with a low-level input. Also, without delving into the principle of its operation, we note that this device already has a linear converter built-in. You connect it to the speakers according to the instructions and enjoy the music.

Useful article: “How to choose a car amplifier” here we will tell you in detail what you should pay attention to when choosing an amplifier for your audio system.

As you can see, in principle, there is nothing complicated, even in the most complex version. With a couple of tools and steady hands, you can do everything yourself. You don’t have to spend a lot of money, and you don’t need any special knowledge, you just need the desire, and the music will always sound in your salon!

Now you know all the ways you can take a signal from a radio that does not have linear outputs, we recommend reading the following article “how to properly connect an amplifier.”

Content

Amplifier for car

For many drivers, one of the most important options for a car’s comfort system is loud and high-quality sound. Often, new drivers buying a new radio are disappointed in its power, even though bursting speakers are depicted on the packaging. Some people try to solve the problem by purchasing more powerful speakers, but the volume becomes even lower.

In fact, the reason is that the output power of the head unit is not enough to make the speakers in the car sound louder. To solve the problem, an amplifier is connected to the audio system. Let's figure out how it works, what they are, and how to connect it correctly.

How to setup

Setting up the amplifier allows you to ensure uniform sound through all speakers of the speaker system. To adjust, you need to turn the Gain knob (indicated as Level on some devices) to the minimum level, and then set the HP filter corrector to maximum. If the amplifier unit is equipped with a built-in equalizer or bass booster, it is necessary to disable the functions (due to the effect on the sound picture). When using high-frequency speakers, the position of the LP corrector is additionally adjusted.

For further setup, you need to enable playback of music content on the head unit. After turning off the loudness compensation, the volume control is turned up to a position corresponding to the appearance of wheezing in the acoustics. Then the user lowers the volume and adjusts the position of the Gain corrector using a similar method. The operating mode is adjusted until a soft sound is obtained, uniform for all speakers. A correctly configured subwoofer does not stand out against the background of other frequencies, harmoniously complementing the sound picture.

Instructions for connecting a Chinese radio

At the very beginning of our article, we will define the concept of “Chinese radios” so as not to return to it later. So. Today, all audio and video electronics of universally known world brands, intended for installation in passenger cars and heavy-duty vehicles, are produced at the production facilities of the companies of the same name located in China. Thus, when we say Pioneer, Sony and similar names, we automatically mean products manufactured in China.

Scheme

Rear View Camera

There is no need to talk about the usefulness of this equipment. The rear view camera is an invaluable assistant for novice car enthusiasts who, as a rule, experience difficulties when performing parking actions.

Depending on the type (location and method) of installation, there are several types of rear view cameras:

Standard installed cameras. In places strictly specified by the car manufacturer;
Universal devices. The location is chosen by the driver himself;
Wired;
Wireless rear view cameras.

As an example, we use a universal wired camera and a Chinese 2 din radio.

Select the installation location. License plate frame, luggage compartment handle, etc. It is not recommended to place a camera inside the rear window.

We lay the cable connecting the camera and the GO. A five-meter long wire is included with the device.

Connect the camera to power. Any of the reversing lights acts as a source. Be sure to use a fuse in this circuit.

We connect the camera to the player via a tulip (connector). A separate exit is provided for this. If it is absent, the device is connected via the “video” input.

We adjust the picture and camera location.

Multifunctional steering wheel

This name means connecting a Chinese radio to the steering wheel of a car. That is, it is possible to control the standard player directly from the steering wheel.

To make this connection you will need:

Steering wheel with built-in control buttons or a niche for their placement;
Car radio;

Two ISO adapters;
Adapter devices for the antenna and combining the steering wheel buttons with the radio.

Let’s say right away that the process of connecting a multimedia system and adapting it with a multifunction steering wheel is not a complicated process, but it is painstaking and requires certain skills. This is explained by the fact that very often the pinouts of such connections between the car radio and the steering wheel do not match, although they are specified in the instructions. And therefore, we advise, if possible, to contact a specialized center that deals with this type of installation.

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Why is an amplifier needed?

The name of the device speaks for itself. However, it not only makes the sound in the speakers louder. It allows you to transmit a signal with higher quality, so when playing through this device you can hear the difference in the fine adjustments of the equalizer.

For lovers of bass music, you can connect a subwoofer to the device. And if you also connect a crossover to the audio system, you can enjoy sound in all frequencies without burning out speakers of different power. An additional capacitor in the audio system circuit will not allow the bass to “sag” during peak load on a separate channel.

All these nodes are important for transmitting high-quality sound. But they won't work properly unless you give them a stronger signal. The auto amplifier performs exactly this function.

Car subwoofer: types and design features

A subwoofer (SBV) is an acoustic system that converts low-frequency sound waves.

You don't need it to listen to most music tracks. A sub is needed for high-quality sound of low frequencies (bass).

Subwoofers come in two types:

Active - they already have a built-in power amplifier;
Passive - there is no amplifier and requires additional connection so that the output sound is clear without distortion or interference.

A passive subwoofer may look like a regular large speaker or a box in which the speaker is placed.

Structurally, an active sub consists of the following elements:

body - wooden or plastic;
woofer;
signal regulator;
amplifier;
signal frequency regulator.

This is interesting: How to connect your phone to the radio in your car in all ways

For high-quality sound, the active sub must be correctly connected to the radio.

Types of subwoofers by design:

Horn - the type has a folded horn-speaker, used at concerts;
Closed - is a speaker installed inside and tightly adjacent to the walls of a closed box;
Bass inverter - a type using a ventilation pipe, from which, under the force of sound waves, air comes out along with low-frequency sound;
Quarter-wave resonator - acoustics with a tunnel design, a tunnel-pipe, of a given length and cross-sectional size through which sound comes out;
Bendpass is a box with a bass inverter, divided in the middle by a wall into two chambers, different in volume, the speaker is placed in the partition between them.

Advantages of the work of Yudu masters

Sizes vary in height. When installing it yourself, you need to route the cables through rubber corrugated sleeves located between the door and the body pillars, and then route the cords under the interior trim to the place where the player is installed.

There is also a simpler option - connect a rear-type surveillance device to a monitor, and connect it to a laptop.

Connection diagram of the camera cable connectors to the car radio. Rear surveillance devices are placed in the base location of the lamp for illuminating license plates. There are several schemes for connecting devices. If the user installs the remote control included with the audio headunit, it is necessary to install patch cables and install an infrared signal receiver. The service center will be able to help you resolve this issue professionally. The button travel is short and clicky. Chinese car radios with this connector size differ from conventional devices with a standard 1 din type. That is, the radio can be used not only as a music player, but also as a video player, since such systems allow you to work with video files. However, it can also be contained in a multi-pin connector. But the cost of these radio tape recorders is often inadequate.

The former can be installed in almost any car, the latter - only in specific models. The higher the power, the higher the playback quality will be. When installing it yourself, you need to route the cables through rubber corrugated sleeves located between the door and the body pillars, and then route the cords under the interior trim to the place where the player is installed.

The device, which will monitor what is happening behind, is mounted on a rotating bracket located at the rear of the car. On sale you can find not just music systems, but also radios with navigation.

And vice versa. The result is this: We insert the frame into its original place. Large test of navigation and multimedia centers. How to properly connect a rear view camera to the stock radio on Android Junsun? (not for kettle)

Examples of circuits for connecting active and passive subwoofers

Please note that not all car radios have LV. As a rule, factory models do not have this connector.

In such cases, it is recommended to additionally purchase a special adapter to connect a passive subwoofer, which connects to a radio that does not have a LP. In turn, the subwoofer will be connected to this adapter. How to do this correctly is shown in the diagram below.

Active connection diagram. subwoofer to a car radio without a LV channel via an adapter.

Passive connection diagram. SBV through an amplifier.

Amplifier installation locations

Its location is of considerable importance. Moreover, this issue must be carefully considered and resolved before connecting the car amplifier yourself. The fact is that its location will determine what should be the total length of the cables running from the radio to the amplifier and from it to the speakers. If, suppose, the amplifier is placed in the trunk, the wires should be laid from the cab to the trunk, that is, their total length will be at least four meters. In the same way, the length to the front speakers is calculated, which is approximately another 4 - 5 meters for any of the speakers. It is also necessary to take into account that the actual length of the wires will be slightly longer than the calculated one, since they are rarely laid perfectly straight.

Another significant criterion for choosing a place for an amplifier is that it will certainly generate heat during operation. In addition, its location should be provided with free access of air and good circulation. Often it is most convenient to locate such a place under the driver’s seat or the dashboard, which allows you to significantly save on the length of the wires, that is, in monetary terms. This option is also widely used when two amplifiers are installed in a car at once. One is located in front - specifically for speakers, and the other is located in the back, it serves the subwoofer.

How to connect a subwoofer without an amplifier

Step-by-step instruction:

On the rear panel of the car radio there are two inputs through which the subwoofer and the radio are connected using a linear cable.
Then the power is connected: the power cable is laid under the interior trim and connected to the “+” terminal of the battery with one edge, and the other is connected to the subwoofer.
The negative contact is connected to the battery “-” terminal and is grounded to the housing with a bolt connection. For these purposes, the edge of the wire must be stripped in advance. Cleaning is done with a knife and wire cutters.
Since the power supply to the battery is 12V, the connection is only permissible through a fuse, which is installed on the power cable near the battery.
Next, the connecting RCA wires are laid from the subwoofer through the interior and connected through the LOW-Input connectors, having previously cleaned the edges. If the connectors in the radio do not have RCA connectors, then you can connect them via the HI-Input connector.

Important! When connecting a device, do not confuse the active with the passive; remember that the active already has a built-in amplifier, while the passive does not, so the connection diagrams are different in both cases.

Antenna connection

Having a radio in the car, some car enthusiasts prefer to listen to music or watch videos. But many drivers like to listen to their favorite radio stations while on the road, which is why every car audio system has an FM tuner. An external antenna is required for its normal operation. Experts recommend installing an active module that ensures stable reception of radio stations. The antenna is powered from the car network via the radio.

Chinese audio devices are equipped with a special output labeled ANT. Depending on the settings, power may be supplied to the antenna when the radio is turned on or only to the radio. The antenna cable is connected to a special socket located on the back wall of the device. The receiving part is located on the windshield. The active antenna is connected with 3 wires:

Weight. It is connected to the car body or to the standard terminal on the GU body.
Power wire. Connects to the red wire of the device control.
Antenna wire. Connects to the corresponding socket on the radio.

In the case of installing a simple receiving device, an antenna adapter containing an amplifier is additionally used to improve the quality of the received signal. In radios with a GPS module, an active GPS receiver is used, which ensures stable operation of both the navigator and the radio. Connects similarly to an active antenna for a car radio.

Features of Chinese car radios

2 din radios differ significantly from smaller devices. These multifunctional modules with a 7-inch diagonal LCD screen allow you not only to listen to music, but also to watch videos. The size of the radio exceeds the dimensions of a 1din device, which immediately catches your eye. Users note their stable operation and high-quality sound.

Most often, Chinese 2 din format radios are equipped with a GPS module. With such a car player, there is no need to purchase a navigator. Additional gadgets can be connected to a Chinese head unit (GU) of this format: multifunction steering wheel, rear view camera, GPS antenna. This slightly modifies the connection diagram of the car radio, because new wires appear that were not on the standard chip.

In most cases, the audio device comes with ISO connectors and wires. Otherwise, you will have to buy an adapter to connect the purchased car player. Switching the device with a source of electricity will not be difficult, since the pinout of radio tape recorders of both formats is identical.

The yellow DC +12V wire is connected directly to the battery through a safety device.

The red control wire is connected to the ignition switch. It is desirable that when the key is turned to the ACC position, there are no other consumers besides the control unit. This will reduce the load on the battery. It is better to connect the black wire (“ground”) to the negative terminal of the battery, and not to the car body, since a 2 din radio is an energy-intensive device.

The GU has the ability to reduce the brightness of the backlight of the buttons and screen when the side lights are turned on. This makes it possible not to blind the driver at night. Power is provided by the wire marked ILL. Terminals KAY1 and KAY2 are responsible for connecting the remote control for the car radio (multi-steering wheel).

Connecting a subwoofer to a radio via an amplifier

To connect the SBV to the car radio you will need a set of tools and materials:

knife;
set of screwdrivers and keys;
pliers and wire cutters;
insulating tape;
circuit breakers;
capacitor;
consumable fasteners (nuts/bolts);
O-rings;
wiring (“tulips”, speaker cable, power supply).

Important: before connecting, be sure to disconnect the terminals from the battery to avoid short circuits.

Where and how to install

Installing the amplifier in the car determines the length of the speaker cables required for connection and the length of the line to connect to the battery. For example, when placing the device in the luggage compartment, connecting each loudspeaker will require a cord 3-4 m long (taking into account bends and laying under the trim). The product is installed in a horizontal position on a special podium. On some cars, a second amplifier is used, intended for front acoustics, which is carried into the cabin.

It is allowed to place the equipment in a special niche under the rear parcel shelf (used on cars with sedan or coupe bodies). If you need to install a car amplifier under the passenger seat, you must take into account the placement of the air ducts of the air conditioning system and the presence of electrical wiring harnesses for heating the seats and controlling the side airbags. With such a scheme, the length of the cable running from the radio to the amplifier is shortened, which improves the quality of the transmitted signal.

Additional sound amplification devices installed in the car generate heat, which must be removed by ventilation. For normal ventilation, it is not recommended to install the case vertically, or cover it with plastic or fabric covers. To improve air circulation, additional fans are installed, which turn on together with the car's acoustic system.