Advice 1: How to make a line input of the car radio

Often the buyers of the car faced with such disappointing circumstances as the absence of a linear input. Somehow, today's manufacturers have positioned the presence of a linear input as an option, although initially all the car radios have this capability. Therefore, to make the line snap.
How to make a line input of the car radio
You will need
  • - soldering iron;
  • headphones;
  • - solder;
  • connectors;
  • - wires.
Instruction
1
If the car normally, then maybe she has a built in AUX input. To connect AUX – external audio source, find the pin-out connections. Look for three pins on the plug connector for the head unit, responsible for the incoming signal to the left and right channel.
2
To make sure that you have disconnected those wires, turn on the unit and individually touch each wire. Increasing the volume, you will hear a hum in the speakers. Do not be afraid that you will hit the current in the circuit low voltage, so your hands are not in danger.
3
Solder wires to connectors of type RCA (this will allow you later to connect to the car stereo using adapters for different devices), or directly solder the connector from the headphones.
4
Do line input can be somewhat different: open the radio and look at its diagram of all the notes, which are responsible for wired Line-in. They are, as a rule, and are marked: Line GND Line-R Line-L. to Check whether you have defined "purpose" of a contact by touching each contact finger.
5
Often on printed circuit boards have contacts provided for the line input. Find these contacts, solder to them wires and connectors to connect devices using adapters.
6
Can also find the inputs of the sound signal directly on the chip amp. But first, understand the nature of the work: from the source signal supplied to the amplifier and to the external outputs. Often all of these devices are assembled on a single Board, but there are also times when the amplifier is brought to a surcharge.
7
Look at the diagram of the receiver capacitors and around these electronic components, solder the wire needed to connect the external device. To verify the correctness of desoldering you can, again, method of testing, i.e. Patronuses finger to each wire.
Note
Follow safety rules, working with a soldering iron!
Useful advice
Note: if the connecting line runs directly to the amp (no preamp), the more you will be able to regulate the volume and filter settings.

Advice 2: How to connect the amplifier to a radio without line-out

Car is the Central element of automobile audio system. There are car radios that are equipped with linear output, without it. Installation and connection of each of these devices has its own characteristics.
How to connect the amplifier to a radio without line-out
You will need
  • adapter line input;
  • - duct tape;
  • - car frame;
  • - screwdriver.
Instruction
1
Connect the radio adapter line input. To do this, connect the input wire of the adapter with the wires of the speaker system of the car.
2
Wrap the adapter case with foam: this minimizes the likelihood that while driving on bumpy roads it will break into pieces. But what is more important: wrapped by foam rubber adapter should be able to slide behind the console, so use a thin foam rubber (0.5-1 cm).
3
With duct tape attach the adapter to the line input wiring of the amplifier. To enable the amplifier uses input Remote. Connect the receiver and the Remote or input select button of the amplifier in a convenient place and make contact connect the Remote input, and the second contact connect with the power source.
4
Proceed to the power connection: power is recommended to make a separate wiring coming from the battery or cigarette lighter to the radio. Please note that if the wire will go from the battery, the diameter should be at least posting the output of the receiver.
5
Set the desired value of the output voltage signal. Do not deviate from this figure, because otherwise the sound quality will be low, and volume adjustment – speed. Ultimately, this will lead to premature failure of the speaker.
6
Verify the signaling. For example, move the sound with the Fader/balance on the speaker located to the right. If the sound dynamics consistent with its location, means connecting the head unit you have made is true.
7
As a rule, radio is sold with a special box: it is attached to the console. Remove the frame from the body of the car, install it in provided for the radio place and depending on the thickness of the laminate pry with a screwdriver the metal petals on the frame. Then connect the radio to the plugs, and insert this device into the slot (sound click).
Note
Work associated with installation of the receiver and connect this device with the need to throw negative battery terminal.
Useful advice
To carry out the dismantling of the car, using a special pry plates side lobes of the frame and pull out the radio.

Advice 3: How to connect the radio without line-out

The receiver is not equipped with line level outputs. It's a bit complicated to connect to amplifiers without high-amplitude input. Some firms-manufacturers of accessories for connecting amplifiers produce a special matching device adapters line. The use of this device considerably facilitates the connection of the amplifier to a radio without line-level outputs.
How to connect the radio without line-out
You will need
  • screwdriver, pliers, electrical tape, adapter line input.
Instruction
1
Getting started connecting the amplifier to a radio without line-level outputs, buy adapter line input for the amp. With it, you will be able to coordinate the output signal with a desired value input of the amplifier. These values from different manufacturers are very different. For example, the input voltage of the amplifiers SONY is 8V, and the same parameter amplifier Kenwood is 0.8 V.
2
Remove the radio and plug the adapter line input to the radio. To do this, connect the input wire adapter with wires acoustic receiver according to the connection diagram.
3
Set the value of the output voltage signal in accordance with the desired value for the amplifier. Try not to exceed this parameter, otherwise the volume control is stepped, with a sharp increase in the sound power for each increment of volume. In addition, the amplifier would be premature to go into full power mode, and when trying to add volume is to reboot and make a distorted wheezing sound. It is very harmful to speakers.
4
Attach the adapter to the line input to the cable harness with electrical tape. Make sure it fits behind the console. To reduce the likely bounce adapter body about the internal parts of the console, wrap it in 1 layer foam with a thickness of 10 mm. Foam, you can fix it with duct tape.
5
Plug the line cable into the outputs of the adapter with the marking line outputs.
6
Connect to amplifier power wires, a control wire turning the amplifier on and speaker wiring.
7
Connect to the amplifier linear wires in accordance with their marking.
8
Make a test on and check the correctness of the supplied signals. The sound of each speaker should correspond to its location. For example, with a knob Fader/balance move the sound to the right side. In this case, must sound only the right speaker, then turn the sound on front speaker. Now will only sound front right speaker. If all sounds where necessary, connections are made correctly.
9
Test the amplifier on the subject of the norm of the input signal. To do this, set the radio volume to 70% of maximum. Using the volume control on the amplifier, minimize the volume. If no distortion, then the input signal is correct.
10
Install the radio in place.
11
Adjust the maximum volume level of the amplifier using its built-in regulators. The volume knob on the radio needs to be set to 70% of the maximum value.
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