Headphone pinout with microphone

There are times when you have to do the pinout of the headphones. For example, the device works poorly, and you need to unsolder the wire to find the cause.

Connector types

Depending on the size of the connector connecting the electrical circuits, they are divided into:

1. Micro jack 2.5 mm. Suitable for equipment portable, handheld devices (players, phones).
2. Mini jack 3.5. Mount for household items (TV, computer).
3. Big jack 6.35. This type of connector is used for special equipment. For example: powerful acoustic amplifiers or musical instruments. But they can also be used for smaller devices (microphones, metal detectors).

Jack also has several categories, depending on the number of exits. It happens:

1. Two-pin. Transmits unbalanced signals. For example, mono signals for headphones or audio recording to microphones.
2. Three-pin. It can transmit both symmetric and asymmetric signals. In the latter, the contacts numbered 2 and 3 are connected using a jumper.
3. Four pin. Transmit both video and audio signals. Both can transfer both at the same time. Such ports are made in modern models of smartphones, players or tablets.
4. Five position. It is very rare. Created by Sony for the smartphone version of Xperia Z. It allows two microphones to function simultaneously. One of them is responsible for noise reduction.

Nests are also divided into two varieties:

1. Ordinary. Made for a specific type of plug.
2. Switchable. Able to adapt to all types of plugs, switching their position.

How to ring the wires

Wires to various parts of the device ring using a tester. First of all, we are looking for those that go to the speakers:

1. We clean the ends. In some varieties of models, the wire that goes to the microphone is filmed, and the screen is able to perform the functions of the corresponding cable.
2. Dress up the headphones. After connecting the tester, we will hear a crack from the speakers. If the sound comes from only one, the tester is not connected correctly. He probably only contacts the speaker from which the sound emanates. It is necessary to connect the tester to a common wire. If sound is emitted from both headphones, the tester contacts both channels.

Our actions will differ, depending on the number of wires:

1. If the cable has 4 wires, the one that remains must be connected to the microphone and volume control through the control panel.
2. If five, there are two that need to be checked. If they can call each other, but do not call the speakers, they must be connected to the microphone. And if others call each other, we solder them to the terminal together.
3. If there are seven wires, the rest are connected in pairs to a microphone with a headset button. They are soldered depending on the colors, both to the microphone and to the common terminal.

Headphone pinout diagrams with microphone

The layout of the pinouts will differ, depending on the model of headphones. Most often, plugs consist of two, three or four parts, each of which is responsible for the transmission of certain signals. For example:

1. The two-part plug is equipped with one common wire. Most often used for a microphone.
2. With three parts it consists of three wires (right, left and common). Used for headphones. The right channel is responsible for the right earphone, the left for the left one, and the common one for connecting the contacts (one cable goes to the plug, but approximately at the middle of the length it disconnects into two, one for each earphone).
3. With four parts. Here the plug is divided into two varieties. The first is a four-wire design for modern versions of phones, players and tablets. Channels right, left, common and for microphone. The second variety is for older versions of the Nokia phone. Channels - right, left, common and auxiliary signal.

In modern phones, the plug consists of four parts (responsible for headphones and a microphone). The pinout is identical for the following models:

1. Apple
2. Samsung
3. Lenovo

If you look at the plug visually, it consists of some segments. Everyone is responsible for a specific channel. For example:

1. The very first segment, the edge of the plug is responsible for the left.
2. Second segment for the right.
3. The last, the longest, is responsible for the general. It is closest to the wire.

Headphone wiring

The most common version of the plug is called jack (in English Mini Jack) version 3.5. But besides it there may be 2.5 jack, mikroUSB and miniUSB. We will look at how to solder a jack wire.

If the headphones are standard, there should be three wires in the cable. The numbering of wires goes from the tip to the cable:

1. Left.
2. Right.
3. Common channel.

But in some forms, they install 4 wires instead of 3 (they are paired). If you come across such headphones, wires of the same color are considered paired, and soldered together.

Reference! Soldering wires with a jack plug is very simple. The ring that is closest to the cable is considered a common channel. And the rest are right and left. In normal wiring, the right channel is connected to the middle, and the left to the plug.

Solder the wires necessary to the appropriate places. You can find these places with the help of a tester or visually.

Jack 2.5 is similar to this version. It has a difference only in the connector. The desoldering process will be the same.

Mini and MicroUSB are used to connect to some types of mobile phones, players and other small devices. The wiring for Mini and Micro is the same. Inside are 5 pins. The cables are soldered to them. They are numbered from left to right. The general conclusion is soldered to the first conclusion, to the third right, and to the fourth left channels.

Broken connector

Headphones break very often. Most often, the problem is not in the speakers and not in the wires, but in the plug, or the terminals necessary for contacts with the wires. If the contacts are stuck, they must be soldered. But the broken plugs will have to be completely replaced.

Determine that the reason for the breakdown is in the headphones simply. You need to connect another, working device. If the new ones also did not work, the reason is in the port. For repairs, you will have to contact a service center.

If there are problems with the contacts, you can determine the breakdown in the following ways:

1. One of the speakers does not work. For example, left or right.
2. The sound is very quiet or fuzzy.
3. Noise is heard.

Try to touch the place where the wire enters the plug. If, when touched, you see the slightest changes in the sound quality (it has become clearer or louder, or vice versa, the quality has fallen), you can be sure by 99%, the reason is in the contacts. It is necessary to unsolder the cable. Using a soldering iron, attach them.

If the plug does not work, the sound will not reach the speakers completely. Only a complete plug replacement will help here. We buy a new one, and solder the wires to it. You can also contact the service center for repair. But with constant breakdowns, the most profitable solution is to buy a new device.