Types of Headset Connectors And Plugs

Types of Headset Connectors And Plugs

Buying expensive wired headphones is no guarantee that the wire will last for many years. Even a well-assembled headset is not reliable in the place of rations of wire to drivers, remote control, or corral (plug, socket). These are the weaknesses of any music accessory, which have to be repaired independently. Without knowing what the headphone crucifix is, repairs are unlikely, except when you need to connect one or a couple of broken contacts.

The common concept of the pattern of splitting headphones (spraying, wiring) – description of the purpose of contacts to identify them; required in the repair and assembly of the device, presented in the form of a drawing, a drawing, a table. It is a description of the purpose, the function of each contact.

In the domestic sphere, the names of the cap and crucible are synonymous, but in electronics, these are the words that are close in importance but not interchangeable. The crucible is a description of the functions of contacts (the components of the difference – conclusions). The cap is a description of the purpose of contacts (stylization) by their numbering. It is used in the installation of radioelements on the circuit board.


What are the headphone jacks?

headphone jacks

The headphone ration scheme depends on the plug used to connect the headset to a computer or mobile gadget. TRS connectors, also called jacks, are used as connectors. They are represented by a pointy end in the form of a cone (Tip) that goes into the shell (Sleeve) with one, several rings in the form of cylinders (Ring) or without them. The rings are separated from each other and the casing by a layer of polymer insulation material.

Depending on the size of the connector, the headphone connectors are divided into:

  • 2.5 mm – micro-jack – with the appropriate diameter, is used in Apple’s mobile devices;
  • 3.5 mm mini-jack – common in computers, TVs, portable devices;
  • 6.35 mm (1/4) – jack – is used in professional (studio) recording equipment (amplifiers, musical instruments);
  • The USB interface is a rare phenomenon; e-sportsmen prefers such devices because of several controls;
  • XLR is a connector for professional sound equipment;
  • Lightning is equipped with the “Apple” technique for the display of uncompressed sound.

In principle, thanks to the adapters, any headphones can be connected to the standard 3.5 mm jack.

3.5 mm difference differs in the number of pins or pins in the form of rings:

  • two-pin or TS – a bipolar with the transition to stereo, has become irrelevant;
  • Three-pin or TRS – distributed in speakers and headphones for mobile phones, players, laptops, additional contact serves to separate audio transmission for each ear;
  • Four-contact or TRRS – is used in headsets, the fourth contact is needed for the microphone;
  • five-contact or TRRRS is not common, mostly in noise-canceling headsets.


How to determine the size of a headphone jack

Suppose the diameter of the connector or plug most users can determine visually because the vast majority of devices are equipped with a connector of 3.5 mm. If the diameter of the plugin your device is less than usual, it means 2.5 mm, Jack. If you use professional equipment or a musical instrument with an enlarged diameter connector – probably a 6.35 mm connector. It is not difficult to distinguish the jack from Lightning and the USI.

Inexperienced users should use a measuring device, for example, a barbell, although the difference of 1 mm will show the school line.


How the headphones work: the scheme

The classic electric headphone connection scheme is shown below.

The left audio channel connects to the end (Tip), the right – to the first ring (Ring), the mass – to the shell (Sleeve).

A separate mass is used for each speaker in high-quality models, such as Sennheiser, Sony, and JBL (the diagram is a common contact). A central residential cable represents the wires leading to the headphones. Depending on the scheme, the device may not work with a computer or smartphone on Android (Xiaomi, Samsung).

If the central vein is insulated with a lacquer coating, where sometimes the fibers of the silk thread are added (increases resistance to stretching, kink), a smooth solder and a special flux will be required – repair without the skills of handling the soldering iron will be complex and not always of high quality.


How the headphone jack works

The hook-up of the headphone (in the trS example) mirrors the plug (the diagram is shown below).

For the connector with the TRRS microphone (applied for the headset), the next king.

How the headphone plug works

If the cable is interrupted, torn, or the plug is torn off, the device is repaired with a solder with consumables and new corrosion (if the problem is in it).

3.5mm headphones

Since the 3.5 mm connectors are inseparable, for the repair, you will have to buy a di season, squeeze the cable with a special clamp, break up the contacts according to the scheme shown below and assemble the connector.

3.5 mm plug structure

Manufacturers adhere to standards in the coloration of insulation:

  • Red – left speaker – first contact or tip;
  • Green – right channel or ring;
  • Blue is the speaker;
  • Colorless or copper-colored mass;
  • different color – leads to the control panel (buttons).

More expensive mass can be at each channel in models: red-copper-mass for the left channel and green-copper – for the right. The microphone cable is sometimes shielded by a woven cable, lacquered.

Coloring insulation is often disturbed, so it is wrong to focus on coloring. To determine which contact which channel corresponds to, put on the headphones and call all the combinations of wires in turn until the speaker starts to make noise. So you can identify the mass and both channels.

The resistance between the headphones is twice as much as between the “earth” and the audio channel.


Headphone scheme with microphone

For the headset, the schematic pattern looks different because it is arranged differently – equipped with an additional cable to transmit sound from the microphone.

Have you noticed that different contacts are responsible for mass and microphone on the circuits? It’s not weird. There are a couple of types (specifications) of TRRS with different mass and microphone contact locations. In CTIA (computer standard), the second ring (third contact) is connected to the general contact, and the casing is connected to the microphone, in the case of OMTP (phone specification) on the contrary: the 3rd contact – the speaker, the 4th – the mass.

Standards are relevant only for the headset – headphones with a microphone, devices without it have no relation.

Standards are relevant only for the headset – headphones with a microphone, devices without it have no relation.

Notice that part of the headset with the iPhone works adequately. The microphone is not functioning, the volume control and the switching of tracks are not functioning since most accessories are produced with an international OMPT, and Apple uses the American scheme – CTIA. The problem is solved by purchasing a CTIA adapter – OMPT (see figure number 1) or a 3rd and 4th contact (they change places) in the headset.

The headphone splitting will allow you to properly flatten the findings during the device’s repair, for example, replacing a damaged plug or cable. It depends on the number of contacts and the specification used: CTIA or OMPT.

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