From the cassette car amplifier. How to make and connect sound amplifier from old radio

Many motorists are tormented by old car chains with poor sound quality, which do not have built-in slots for flash drives and memory cards. How the right is pretty old cassette radio And those tape recorders who were released before the 2009, which did not have the specified slots.

Of course, such a jamb can be corrected using the FM modulator, but the modulator is not good, has a bunch of flaws. Firstly, data transmission is carried out through radio waves, and this is not an analogue of cable transmission.

Once again, a person asked to remake the Chinese radio tape recorder, which was already in a non-working condition, the magnetic literally did not work, in addition to the built-in amplifier, made on the TDA7388 chip. The chip from the row is good, allegedly 40 watts on the channel, the four-channel chip itself. Despite low-voltage food, the sound is quite decent, distortion almost did not hear at maximum power.

Next, it was necessary to start the amplifier, and it has a sleep mode - ST-BY, so that the amplifier comes out of this mode, you need to connect the amplifier from this mode 10-15 hours of the 4th foot of the microcircuit. The magnetol itself already has a built-in filter at the power inlet, so it has not installed additionally.

Further on the board of the radio should find 4 sMD condenser - These are input capacitors. They are quite easy to find, usually stand on one line, in parallel to each other. These capacitors were connected to 4 wires - it is desirable to take shielded, since the wires on the input circuits. Check work is quite simple.

We connect the column to one of the output wires, followed alternately to the input wires, if there is a characteristic sound (signal) from the speaker, then everything works as it should be done, this operation must be carried out with all the inputs to make sure that the amplifier is normal. As a signal source, I took the Chinese player with remote control.

First you need to check the player itself. As the right, the players of this type already have a complete class E amplifier for a couple of watts, which costs directly on the Player board.
From the control panel, the radio swap exclusively, the buttons fixed the thermoclaim, but they, like the volume control, do not play any role and left as a scenery.

The more complex is the built-in player display cut off from the main board and MHTF wires (0.3mm) brought to the panel, fixed the thermoclaim display. Further brought the same wire USB port and infrared receiverwho were on the player. As a result, somewhere 30 wires go as a loop, from the front panel to the player board.

All contacts and places of arrivals perfectly fixed the thermoclaim.

Since the player itself is powered by reduced voltage, it was supplemented with a feed node based on linear stabilizer Voltage 7805, thus, the player's fee is 5 volt stabilized voltage.

Current consumption is quite large (up to 650m) Therefore, the stabilizer must be screwed to the heat sink, in my case the stabilizer chip screwed to the magnetic casing, the heating during operation is, but within the normal range.
Further test the operation of the player, if everything is fine, then go further.

In the third stage, we need to poison the player with a car power amplifier. It is done quite simple. The player is originally stereo and has two independent channels, we will use only one channel, for the reason that the output value of the output signal from the player is quite large and a simple divider can be used.

By the output of the player, we connect 4 resistors with a value of 1kom, simply take 4 resistors of the specified nominal, one of the conclusions (all resistors) connect each other and simultaneously connect the wire from the player's output, the free conclusions from the resistors alternately connect to the inputs of the car amplifier.

Very advise each input of the car radio through the 1st resistor to transfer to the Earth. In my case there were some problems with the background, more precisely was a certain high-frequency whistle, so it was forced to apply passive filter First order, which cuts all the frequencies above 15 kHz, and the background verse.

After a successful completion of the alterations, we need to carefully fix all the places of solder the thermoclaim, especially the location of the wires to the input capacitors of the car amplifier, since the solder will not stand it for a long time, considering all the vibrations during the ride.

Then already tests. My player turned out to be quite successful, has a bunch of functions, including the equalizer. LED display pleases eyes, bright red in retro style. To close the standard platform of the former display, I used 3D carbon, it turned out quite stylish, it is not striking and looks like an industrial pattern, the owner also was very pleased.

Make an amplifier from the radio with their own hands will work at home. Make a new useful device from the old device who came into disrepair is possible so that the new car radio starts to stutter with a strong increase in volume.

Advantages and disadvantages

The pros and cons of the obtained device depend on the method, with which the old radio tape recorder was turned into a sound amplifier.

The plus of the self-made device is the savings. Do not have to buy a special device that helps improve the sound. In addition, this option allows you to extend the service life, which for some reason has become unsuitable, was partially broken.

The dignity is the sound obtained using such a device: its quality will be as good as that of the shop purchased. With proper use, the service life can be several years. In addition, in some cases, the gadget will not be connected to the cigarette lighter socket.

Some options can read various media with music files.

There are devices and disadvantages made on their own. The design has a less reliable company than devices from the store. Uncomfortable and often sticking self-assembly cable. If a person gathered an amplifier from a car radio unprofessional, extraneous noises, cods, sounds when working. Sometimes such unpleasant effects manifest only about a strong increase in volume.

It should also be remembered that the maximum voltage possible in the onboard network of the machine is not always sufficient to obtain the maximum power of the low frequency audio amplifier. Such a difficulty is eliminated by connecting capacitors having a greater container.

Often, tape recorders are installed in the assembly cars, the quality of which is not too high. For this reason, the sound may not be too high quality if you increase the volume. The sound, however, in this situation will be bad and without connecting a homemade amplifier.

How to do

There are several ways to redo the old radio tape recorder in the subwoofer. The choice of option should be done, given the condition of the technique, the presence of inputs for different adapters, its own abilities.

To implement this method, the ability to use a soldering iron should be used. You can remove an old device for listening to music. Then dismantle the top cover. This becomes visible block for cassettes. Pole wire should be disappeared and isolate: it will help prevent occurrence outsided sounds. It does not follow it, since the technique can break. After that, you need to find where the AUX-IN yield is soldered.

Then, to make an amplifier from the car, you should detect sound channels. To do this, you need to insert a cassette on which audio recordings are missing, put the player on playback mode. After that, the screwdriver is pressed to the wires. When contacting with sound channels, a soft cracking will be heard. One of the exits of the audio cable is soldered to the body of the device, the other to the right, and the third to the left channel.

If the mechanisms are strongly worn, the tape recorder itself cannot be used, you can remove the built-in amplifier from it and use it for other devices.

From cassette tape recorder

This method allows you to make an amplifier from a radio or simple tape recorder. Often there is no input to the USB port in the old devices. In this case, the adapter in the form of a cassette is suitable for the signal, which is placed in a special mechanism. After that, enable audio playback mode on the device. To the source of the signal, connect the plug emanating from the conductor of the wire.

From FM transmitter

Another technique that allows a sound amplifier from the radio tape recorder, assumes the presence of a FM transmitter, which will become an alternative source of sound playback. This method is used in cases where there is no tray for the cassettes or this detail is defective, broken.

To fit the device correctly, you need to insert a flash drive with audio recordings to the USB port. If there is no such, you can use another source connected via AUX-IN. After that, in the cigarette lighter it is necessary to free the place. Then the car tape recorder and the transmitter are adjusted to the total frequency.

The disadvantage of such an option is permanent in the port of the cigarette lighter of the cable: the phone cannot be charged in the car.

From Bluetooth adapter

This version of the sound amplifier can be used in those situations when listening to music using tablets, mobile phones, laptops and other devices on which there are bluetooth adapters. Connect a car radio as an amplifier will be possible only if there is a port AUX-IN: otherwise, connect the adapter will fail. In some situations, you can use other types of adapters or any FM modulators.

In principle, there is nothing to tell. I will only add briefly, in favor of homemade / exchanger that, alteration of moglyols under the amplifting is possible, and it is not easy to give signals to an amplifying chip and use the full functionality of the player.

Like many, in the boxes or in the tables, or where the radio tape recorders are dusting deeper and dust. And this is the reason, sometimes it leads the electronics and sometimes the wheel worker served his age just comes out of fashion. In my case, "Magfon" came out of fashion, as I don't play mp3. As a Russian person, throw out a pity, in something special to redo it is not worth it (... though).

Well, in general, I needed an amplifier from 12V, Ie worked from the battery. Since I have electricity in my garage, I decided to use this tape recorder under the master. So that when repairing equipment was not so boring.

Alteration was very simple! Pearing some radiocots with questions and what, how, finally, having received decent answers (for which I am grateful) I took it. At first, I thought that it would be impossible to serve signals, Ie, it was always possible to submit the opportunity, but there would be a little from there. I thought that the sound would be distorted with the interference from the radio, or it is not at all as it is not clear. And of course the most important thing in this alteration should have been that sound control fully worked from the panel.

Service manual JVC KD-S73R KD-S71R:
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Amplifier from car radio

Due to some reasons, many motorists are not in a hurry to get rid of their old car radio. They are not at all embarrassing neither the outdated design of this doptop device, nor the fact that its cassette receiver has long been no longer used for the appointment and setting of the equalizer so primitive that the purity of the sound is regulated only by the volume of the volume of the car radio.
In this case, there are only three reasons for the lust of the owner of the car to its "Patheton":

• Sentimentality;
• Deafness;
• The price of a new and good car radio is a significant part of the value of the car itself.

Since the first two reasons are competent with purely medical workers, then I propose to consider the third option in which this instruction has been laid on how to make a sound amplifier from the car radio that you have already been going to throw out.

Avtomagnetic Resuscitation - Method First

So, in order to make an amplifier from the car machine, we need to ask yourself the last two control questions:

• Is it satisfied with me (if there is conscience and desire to ask - my passengers) output power and "Lost" of the radio?
• Is the sensitivity of the FM - tuner sufficient?

If in both cases put "pluses", you can congratulate you, you just appreciated the internal content of this music box, namely:

• Digital tuner;
• Sound control unit;
• Stereo - quadrower.

Well, now I will proceed to the most interesting - how to make an amplifier from a car radio?
When solving this dilemma, thanks modern technologies and technical characteristics The old but necessary, the head unit will greatly facilitate their task by connecting the digital sound source to the old radio. Well, here we already have several options.

If your radio is really old, it implies the absence of such necessary in it this moment Conclusions like AUX-IN and USB port. In this we can use the CAR Cassette Tape Adapter Transmitter for MP3 adapter.

As you can observe in the photo, this adapter is performed technically and visually as analogue of the usual cassette - 100.5 * 63.8-12.0 millimeters. I agree, first seeing this device with you, at least, there was a slight sense of surprise and smile, but wait to judge, you will now understand all the charm and genius this device.
The principle of incorporating this adapter is that you insert it as a regular cassette in the "Deca" of the car machine, its head comes into contact with the player head and connecting the sound source through a mini-jack (player, body - smartphone, laptop, etc.) We We get enough good sound in the speakers, at least the best than some FM transmitters.
In general, all are satisfied - we are that we saved a decent amount on the acquisition of a car radio (see), the tape recorder is that he thinks that he loses a real cassette)))

Dignity

It:

• The very idea;
• Price;
• Not bad sound;
• Does not claim to the cigarette lighter socket, which, you see, it is very important!

disadvantages

• Unreliable layout (if you do not make a hammer with a screwdriver and do not pull the cable for a long time);
• Again sticking cable !!!
• When playing, the sound of the working tape mechanism is heard (eliminated either by adding volume, or by disconnecting the mechanism itself).

Method of the second

If a malfunction or absence of a cassette tray in your car radio (are there any such encounters?) An alternative source of sound may well be mentioned above the FM transmitter.

For his full-fledged work You will need to insert a flash drive through the USB port with music files or via AUX-IN to connect another sound source, then release a place in the cigarette lighter and configure your automagnetization to the same-name transmitter FM frequency.

Dignity

• Easy connection and use;
• Extensive features of connecting various sources with music files.

disadvantages

• A constantly engaged regular port for meals the cigarette lighter;
• With poor performance, the presence of extraneous noise and periodic "glitches".

Method Third

IN this method I would also like to tell about the same version of how to make an amplifier from the car machine for more modern devices, such as smartphones, tablets, laptops and the like with the presence of Bluetooth adapters.

In this case, the WirelessBluetoothMusicReceiver adapter will help us, if only your head device has a port AUX-IN. Otherwise, you can always use other adapters, adapters and FM modulators able to imitate additional stereo audio inputs of the sound frequency power amplifier.
Well, if you consider yourself to the number of normal guys who are not afraid of difficulties and always go around, then I can offer you an option not for the lazy in the following way.

Four fashion

If you read this option about how to make an amplifier from car radio, then by default I accept that you at least capable of:

• Hold on the soldering iron;
• Look into a fundamental chip;
• See familiar beaks in the accompanying documentation related to car radio.

Attention!
At a minimum, it is necessary to realize that all actions take place on your fear and risk, as well as that you should have a presentation at least about the basics of the theory of electronics. Any "tuning" of the insides of the automotive radio must be made by you in the sober mind and in solid memory)))

• Remove the "old woman" from a regular location and disconnect all connectors and wires:

Tip! All subsequent actions are not for "the knee", it is necessary to settle in normal conditions.

• Removing the top cover, we can observe the cassette block. We do the very first modern - we remove the interference and noise of the electromagnetic origin of the tape-generated tape driven by the electric motor, for which we disappear with the positive wire and isolate it.
  It's not worth pulling out, suddenly, who wants to return everything back?

We define the place where we will fall out the outputs of AUX-IN:

• Firstly. We inspect the wires that come from the head of the pickup, as a rule, they are soldered to the pre-enhancement scheme, it is not necessary to solder here;
• Secondly. We find out where the reinforced signal comes from the pre-enhancement, and it enters the kamparator (the chip is responsible for switching between the cassette block and the FM tuner);
• Thirdly. Either including logic or using Datasheet (technocamentation) preamp chips find the output of sound tracks from it. In the case of photo, it turned out to be the heels under the numbers FPM 1558 and FPM.

Trackting the paths that connect the output pre-amplifier With a sign of a comparator, find out where the left and right sound channels is located - touching the screwdriver to the fives of one of the channels, while the empty audio cassette is enabled, the characteristic cracks will sound in the speakers. We solder the output of the audio cable with the AUX-IN to the left (Inleft) and right (InRight) channels. The third conclusion (ingnd) is soldered to the mass (body) of the car radio.

Unfortunately, this instruction There can not accommodate all the options for the AUX-IN exit switch to the schemes of all sorts of car radio, but I hope the principle is still understandable. Moreover, different videos on the Internet on this topic are full full.
It suggests that this topic can be continued and continued. As the limit is said to excellence, there is only the limit of fantasy separately taken individual.

Some motorists are not satisfied with the sound quality of the standard multimedia system. In this case, it is not necessary to change the speakers or audio in the car. The situation can be improved by installing power amplifier. Feeling the device for your requests, it will remain to install it and correctly connect to the radio, following step-by-step actions.

Why is the amplifier to the magnetol in the car

Installing the amplifier In addition to the radio not only increase the total sound of the sound signal, but also improve the sound quality. Plus, a subwoofer can be connected to the amplifier. Using the gain device allows you to perform optimal setting The sound of the automotive audio system. After connecting the amplifier through the crossover, the sound is perceived better throughout the frequency range. It is important to understand that the voltage of the on-board network of the car does not always correspond to 14.4V, which is necessary to ensure maximum power of the amplifier. In particular, this situation is manifested when using a subwoofer: The output voltage of the amplifier at a lower supply voltage cannot solve a powerful load in the form of low-frequency dynamic heads.

The designated problem is solved by installing electrolytic capacitors of high capacity (1F). This element accumulates the required discharge and during the peak load does not allow "to see" bass, i.e. the signal is obtained juicy, clear, without any distortion. In order to be able to connect the subwoofer to the amplifier, there are special output for Saba in devices. To improve the sound quality, it is not necessary to replace the header and columns. In this case, you will need to simply install a four-channel amplifier that is endowed. compact dimensions And has quite high output power. If you seriously approach the conversion of the sound part of the car, it will not be difficult to connect the amplifier.

It is worth noting that many cars are equipped with full-time audio systems with mediocre quality speakers. In order to achieve indeed high Quality Sound, you need to think not only over the acquisition of the amplifier, but also over the replacement of regular dynamic heads. Each car owner has the ability to choose the location of the columns, as well as additional components. Many are quite satisfied with the installation in the front of the speaker salons with diet and twitters. To mount a similar system, you will need a four-channel power amplifier.

How the amplifier works

To understand this, it is not necessary to delve into it electrical circuit And find out which items he is assembled. It will be enough to consider what happens with the signal when it arrives on the amplifier from the radio. It is believed that the signal on the enhancing device is supplied with a small amplitude, after which it increases to defined value. Such a reasoning is true, but only partially, since the amplifier creates a new signal, which is a copy of the input.

On the enhancement device, the signal is served from standard magnetic, increases to the level ensuring the normal operation of the speakers. As a result, the input and output signals differ only on power characteristics. Regardless of the amplifier, the design will have three main nodes:

1. Input circuit.
2. Power supply (BP).
3. Output cascade.

Each sound source has a specific output voltage level. For example, one radio receives a signal at a linear output voltage in 1B, another in 3B. In this case, the amplifier must process signals from different levels. One signal is usually processed by regular devices and some models of amplifiers. However, most of the devices are able to process two input signals. If they have high levelIt is fed directly to the load, with low, first pass through the enhancement device.

It is important to know that the sensitivity of the input node must match the signal level, which is served from the radio. In the amplification device, the input sensitivity is adjusted, which determines the gain coefficient. With too much input sensitivity, the output signal can be distorted. In this case, it is controlled by a volume regulator on the radio. For a better understanding, you can say so: sensitivity is regulated in order to exclude the inconsistency of the output levels in the automotive audio system. On proper adjustment of sensitivity can be judged by the absence of distortion in dynamic heads.

Such a node as a power supply is intended to convert the voltage from the battery to higher. The need for such voltage occurs as a result of insufficient nutrition from the onboard network for the rolling of speakers. One of the functions of the automotive amplifier is to increase and control the supply voltage. To do this, the transformer is used in the power supply. Since the beep is variable, then the load (speakers) will require two stresses: positive and negative. To implement them, two stresses with opposite polarity are removed from the transformer. Combining these oscillations you can get a variable signal.

If the BP gives + 25V, then it should also produce -25V, which is necessary to power the enhancing device. In the example given, the voltage difference is 50B. Calculating the power according to the formula P \u003d U² / R, where P is the power of the amplifier, U is the voltage, R is the load resistance, with a supply voltage of 50V and 4 ohm columns, we obtain power in 625 W. The greater the difference in power supply voltage, the way with the amplifier can be removed with greater power.

The output stage provides directly enhancing the input signal, which is after the dynamic heads. The main element of the output node is high power transistors that operate in key mode, providing an increase in high voltage with BP to the output device output. It is implemented by converting voltage from the power supply to the required signal form. Transistor control is carried out by input signal: Voltage with BP takes the form of an audio signal, i.e. transistors are turned on or disconnected depending on the input signal.

Types of amplifiers

Before going for buying an amplifier, you need to find out what these devices are. Today it is proposed big choice The equipment under consideration, but their main difference is the number of channels. There are amplifiers from one to six channels. In addition, the devices are classified according to the signal amplification method: analog (AB) and digital (D). Digital devices are capable of issuing high power With relatively low signal quality. Analog, on the contrary, are characterized by low power with high quality.

Characteristics of amplifiers depending on the number of channels:

1. Single-channel. Used mainly for subwoofers. This type of amplifiers is designed for a rated load of up to 2 ohms. With a larger load, it is recommended to use the amplifier into two channels. A positive feature of such devices is the convenience of operation. Since car radio do not have volume levels low frequenciesSingle-channel amplifiers are equipped with a special sound controller with which you can adjust the audio system for yourself.
2. Two-channel. Designed to connect two dynamic heads with a large power value than for a single-channel amplifier. The load can also use one high power speaker.
3. Three-channel although it is rare, but you can meet. They were replaced by four-channel devices.
4. Four-channel amplifiers are most popular. They can be used for four speakers or use in two-channel mode and connect a subwoofer. It is possible to connect two dynamics and two subwoofers.
5. Pleasants allow you to connect four speakers and one subwoofer.
6. The six-channel for the automotive audio system is rarely used, since four dynamics and one subwoofer are used mainly. In addition, such an amplifier is able to quickly discharge the battery.

How to choose an amplifier

After reading the types of amplifiers, it will be possible to determine which device is better suitable for your audio system. It remains to give preference to one or another manufacturer. If you really want to get qualitative sound, it is better to pay attention to the following brands: Infinity, Alpine, DLS, JL Audio, Audison. In addition, it is desirable that the amplifier is equipped with a fan and various signal level regulators. It is worth remembering that the weighty indicator is the sound quality, but no power. It is not an equalizer that will make an equalizer that allows you to perform the sound setting to your taste. It should be understood that large quantity Functions leads to the appreciation of the device.

How to install

After the amplifier is purchased, you need to choose a place for installation and perform the correct installation, taking into account possible nuances. Do not install the device in the first place you like: Most likely it will be far from the best option.

Choose the right place

Depending on the location of the amplifier will depend on the length of the connecting wires. It is necessary to take into account that when installing in the luggage compartment, the wires for connecting the magnetol with an amplifier and a subwoofer will be needed. On average, it will take about 5 M wires for the multimedia system and 3 m per column, which depends on the specific machine. Calculations are made in advance, since the laying of the wires will be carried out under the trim.

When choosing a place, it is important to take into account that the amplifier highlights a lot of heat, so normal air circulation is only welcome. Installation of the device in the side position or upside down should be avoided, it is also necessary to exclude an obstacle to air, which is possible when the rug is covered or things. One of the options for the installation space may be space under the driver's seat. In this case, it will not only be possible to save on the length of the wires, but also to improve the sound quality, because with a larger length, the part of the signal is lost.

In fact, the options for mounting the amplifier is quite a lot, so at each of them at least briefly, but it is worth staying:

1. Front of the cabin or center. This option is optimal (depends on the car), since it is possible to achieve a good connection with the load, which will provide an extended transient frequency.
2. In the trunk. If the installation of two amplifiers is supposed, then one is installed in front, the second in the luggage compartment. The connection will require a larger length wires, but the location of the device will not occupy free space.
3. Installation on the rear shelf. The option is relevant to the car in the body of a sedan or coupe, while the regiment should be durable.
4. Under the passenger seat or driver. The device will always be free access, which will ensure quick disassembly if necessary.

Wires for mounting

One of the important elements in the device is connected are wires. They are necessary for nutrition and inter-block connection. Additional wires may also be needed. To supply the power, the wire is selected according to the power of the amplifier. This indicator should add another 30% for losses due to low efficiency. If we consider as an example two two-channel amplifiers with a total power of 200 W, then at the maximum volume level, they will consume 260 W. Based on the data obtained, you can decide on the cross section of the wire, which depends on the current passing through it. To do this, turn to the law of Ohm: i \u003d p / u, where I -t, P is power, u - voltage. Since the voltage of the Akb of the car 12V, by performing the calculation, we obtain the current by force of 21.6A. It is recommended to buy wires with a reserve, paying attention to the quality of insulation.

Fuse

Since the power cable passes in close proximity to the body, the mandatory element in the amplifier connection scheme is a fuse, which in case short circuit Exclude fire. There are protective elements in the amplifier itself, so the power cable protection fuse is recommended to be installed near the battery. The element chooses in most cases with a par value of 50a. Do not install the item with a big value.

Exist different types Fuses, but the most common is AGU and ANL. The first are used by lovers, because they have a low cost. The design is a glass cylinder on which the metal tip is derived, and the fusible insert is located inside. Constructive features Such fuses are their disadvantage. The problem is that the item consists of several parts that are connected by an element made of fusible metal. As the fuse is oxidized and simply fails with constant vibrations. In addition, contact in such a protective element is very unreliable. As for the fuses of ANL, they are delivered from the listed shortcomings. A part of the all-metal plate is performed, fastened in the retainer reliably with bolts. The probability of failure is minimal.

Inter-block cable

The sound from the magnetic to the amplifier is supplied using the inter-block cable. From this element directly depends on the quality of the signal, which will come from the source. Do not rely on inexpensive options or coming with an amplifier: First of all, they are thin, the shielding is bad, and the insulation itself is weak. The high-quality wire must have durable insulation, continuous shielding, good central core. The RGA connector itself should also be qualitative. When choosing wires, you can pay attention to manufacturers such as Tchernov Cable and Daxx. From the tools for installing the amplifier, you will need a set of tap and knife for stripping wires.

How to connect with your own hands

With a standard connection, the power wires are connected directly from the battery. Plus, connected with a positive battery terminal, minus - on the car body. The power is supplied to the amplifier and connects to the corresponding inputs: the positive wire (red) is connected to the amplifier socket, on which the supply voltage is designated. The minus (black) is connected to the GND connector. A signal wire from the signal source is supplied to the Remote slot, i.e. from the radio. In some schemes, a capacitor can be used, but, as a rule, it is installed in a set with powerful amplifiers.

Step-by-step connection process

Having understood with the connection scheme and prepare all required tools Both materials can be proceeded to the process itself.

1. We establish an amplifier in the place where overheating will be excluded, an obstacle to air exchange and wetting.

We proceed to laying wires. First, it is necessary to pave the signal and additional wires that come from the magnetic to the amplifier. Each car owner must determine how to do it better because there are no universal recommendations. In any case, it will have to remove the decorative lounge of the cabin to put the wires beautifully. It is important to know that the inter-block wire should not be in contact with the car's wiring, which is under voltage.

2. I stretch to the amplifier from the battery power cable. It is convenient to place it along the standard wiring. The fuse is installed near the battery at a distance of no more than 30 cm.
3. Connect the signal cable: on the magnetol into the Line-Out connector, to the reinforcing device in the LINE-IN connector. We also connect the power cable.
4. We connect an additional cable to the Remote connector on the amplifier and to B + Ant (Blue) on the signal source.
5. Connect the amplifier with speakers. If the connection is made on the bridge circuit, then one channel of the amplifier is connected to the "+" load terminal, the other with "-".
6. We set the condenser near the amplifier (if necessary). Connection with the amplification device is produced short wires.
7. Customize the amplifier in accordance with the manufacturer's recommendations. The adjustment depends on both the amplifier and the radio itself, the presence of a sub-audio system.

Connecting an amplifier to a tulip magnetol

How to be if the magnetic has no tulips, i.e. linear output? As a rule, there are no such connectors from standard devices. The connection process is complicated, but still the problem is solved and the actor adapter is used for this. To implement a linear output in the radio, perform the following actions:

1. Purchase a linear output adapter. The device allows you to negotiate the output signal with the input of the amplifier.
2. Remove the radio and attach the adapter to it, which will allow you to connect it with the amplifier. After connecting the input wires of the adapter with a radio tape recorder, the value of the output signal, which must correspond to the characteristics of the amplifier.
3. Adjustment must be performed carefully because it depends on how high-quality sound will be.
4. The adapter is adapted to the humbetage to the harness with the wires. To avoid the appearance of the device of the device of the device about other elements of the design, the adapter turns into the foam rubber and fastened with the tape.
5. A signal cable is connected to the output connector of the adapter, connected the power wires to the amplifier. In accordance with the labeling, linear wires are connected. After turning on the amplifier, you need to pay attention to the sound of speakers: everyone should sound according to its channel and location.
6. Check the balance ratio: By turning the handle to the right position - the sound should be observed only in the right speakers, to the left - in the left. In addition, it is necessary to check the signal level at the output: the volume control is set by about 70% of the maximum value, after the volume is minimized. If with the troubleshooting manipulations in sound alarm It was not observed, it means that the connection is performed correctly.

How to connect two or more amplifier

As a rule, two and more amplifiers are connected by those who want to achieve high sound quality and increase the power of the signal. However, with this option, some difficulties arise:

• with power connections;
• with a cable RCA connection to several amplifiers;
• with remote inclusion of amplifiers.

If the mounting of the first amplifier was performed without a capacitor, then it will still have to install it with several devices. The scheme, in accordance with which the power supply of several amplifiers will be organized, are selected based on their power. You can connect two amplifiers by using one condenser by connecting it in parallel with the battery. As for the connection of the cable RCA, then you need to proceed from the requirements for a specific amplifier. For example, when connecting two amplifiers, the same frequency band is played. In this case, it is enough to use the output connectors on the devices themselves if they are. You can also divide the channels at the entrance using the crossover.

For remote envelope on the amplifier, voltage + 12V on the device connector of the device, the power is taken from the antenna on the radio. The problem when connecting multiple amplifiers is that the load on the head unit may be too large. At best, the amplifiers will not turn on, and in the worst of the radio can fail. The situation can be solved by installing the remote switching circuit, relay. The item is connected quite simple: when the head device is turned on, the relay is triggered, it is fed through it +12 V to the REM connector of amplifiers.

Video: How to connect the amplifier with your own hands

Installing and connecting the amplifier with your own hands is not a time-folding procedure. Even if you encountered it for the first time, it is enough to purchase the necessary items and familiarize yourself with the step-by-step process. The main thing is to choose the right place to be installed, when connected to comply with the polarity of the power, connections to make reliable and after completing the work, check the connection scheme. It remains to check the performance of the device.