Audio is a kind of metaphysics and a kind of belief, but in fact, the wire connecting audio equipment is more "mysterious", and a complete wire is composed of a plug and a wire. Whether a set of audio equipment is professional or civilian, it requires various audio wires to be connected before it can be used. The following are some introductions to commonly used plugs and wires.
1Connecting plugs for commonly used audio and video equipment
In an audio and video project, the types of output and input signals of equipment can be divided into audio signals and video signals(This time only gives a brief introduction);Audio signals can be roughly divided into balanced signals and unbalanced signals according to different impedances(Audio source equipment such asDVD player / cartridge / CDMost of the output of the player and the output are unbalanced signals)。Therefore, connecting plugs are also divided into balanced and unbalanced. The balanced plug has a three-core structure, and the unbalanced plug has a two-core structure. Among the audio plugs, there is also a special plug for connecting the power amplifier and the slightly. This plug is commonly of a four-core structure(There are also two cores and eight cores)And because it's SwitzerlandNEUTRIK(Neutrick)Company invention, therefore also known as "NEUTRIK(Neutrick)Plug "or" quad core(Two-core, eight-core)slightly plug."
1.1、 Commonly used balanced signal plugs:
A、 Cannon plug(XLR): Cannon head is divided into Cannon head(XLR Male)Hekanong Mutou(XLR Female)。The distinction between male and female canon head is very simple. The one with a "needle" is the "male head", and the one with a "hole" is the "female head". The input and output ports of many audio equipment are Cannon interfaces. Similarly, the interfaces with "pins" are "male seats", and the interfaces with "holes" are "female seats".
B、 Large three-core plug or6.3mmthree-core plug(PhoneJack Balance)：
1.2、 Commonly used unbalanced signal plugs:
A、 large two-core plug(PhoneJack Unbalance )
B、 Lotus plug(RCA)
C、 Small small core plug or3.5mmthree-core plug
The appearance of the small three-core plug is similar to the large three-core plug, except that the volume is smaller than the large three-core plug. A small three-core plug is a three-core plug. As mentioned earlier, a three-core plug is a balanced signal plug, but in ordinary audio engineering, a small three-core plug is mostly used for computers and portable sound sources.(portableCD / MP3such)is used for audio signal output, so small three-core plugs are classified as unbalanced signal plugs.
1.3、 Neutrik(Neutrick)slightly plug(Speakon)：
NeutrikThe commonly used plugs are four-core, two-core and eight-core slightly plugs. Their appearance is basically the same, except for the difference in size. Normally, the interface of the slightly is a four-pin plug. If it is an eight-pin plug slightly there will be a mark on the back of the speaker.;The output port of the power amplifier is a four-core plug.
1.4、 Commonly used video connection plugs:
Lotus plugs are mainly used for the output and input of analog video signals in video systems, such asDVDmachine video(image)output/Video from a small projector(image)input;BNCorQ9The plug is mainly used for the output and input of analog video, such as the input and output of some video matrices. / Video input for large projectors(component video)/ Video input from professional monitors. Lotus plugs andBNCThe role of plugs in video systems is the same, but the interface forms are different.
The video connection plug also uses a computer video signalVGAPlug. The interface is trapezoidal in shape15Pin is divided into male and female plugs. The male head is with a needle and the wood is with a hole. For physical objects, please refer to the computer host and monitor cable plugs.
2、 Commonly used audio cables
Audio cable with microphone cable(audio cable), audio signal cable and slightly cable:
A、 microphone cable
The microphone cable is shielded by two-core tape(According to strict requirements, the core and shield should be made of oxygen-free copper), each core is a structure of several thin copper wires. It is usually composed of two cores, a sheath layer for each core, tensile cotton yarn filler, a shielding layer and an outer rubber sheath layer. The outer rubber sheath layer of the microphone cord is usually black, but also available in different colors such as red, yellow, blue, and green. The shielding layer is divided into two types: winding and weaving. The winding is such that the shielding layer is wound on the outside of the two cores and the cotton yarn filler, and the weaving is such that the shielding layer is wound on the outside of the two cores and the cotton yarn filler in a "mesh" structure. Preparing shielded microphone wires has better anti-interference from a physical point of view and a slightly more expensive price than winding shielded microphone wires. Microphone cables can also be used to connect devices, but it is more expensive to use audio cables when connecting devices.
B、 audio cable
The audio connection cable is also a two-core tape shielding structure similar to the microphone cable. The two cores and shield layers are made of copper tinned and have a silvery white appearance. Audio connecting cables have poor tensile strength without cotton yarn fillers, so they are rarely used for connecting microphones. Under special circumstances, they can be used for temporary connecting microphones over short distances. Generally, in audio engineering, the equipment connection inside the cabinet uses audio connecting wires, because the audio connecting wires are thinner than the microphone wires, which is convenient for bundling the wires inside the cabinet. After bundling, they are more beautiful and cost less than the microphone wires.
C、 Audio signal cable
An audio signal cable is actually a combination of several audio connecting wires in one cable. Due to the different number of internal audio cables, there are4、8、12、24Wait for the number of ways. Audio signal cables are heavy, and usually there is a steel wire inside the cable to increase tensile strength. Audio signal cables are mostly used for signal transmission and connection between peripheral equipment and power amplifiers in live performances, and for signal connection between the control room and the stage in audio engineering.
D、 slightly cable
In terms of appearance, the slightly wires can be divided into sheathed slightly wires and gold and silver wires. The sheathed wires can be divided into rubber-sheathed slightly wires and plastic-sheathed slightly wires depending on the outer sheath and the use occasion;Gold and silver slightly wires are usually copper wires with a transparent or translucent sheath wrapped in gold and timbre, so they are commonly known as "gold and silver wires." There are also two cores of the same color, but words are usually printed on the outer sheath of one core to distinguish the two cores. In short, the slightly wire is basically two copper wires with each sheath. There are also multi-core speaker cables such as four-core slightly cables depending on the usage requirements. There are also differences in cross-sectional areas of the slightly wires, that is, the copper core thickness is different, such as1Square,2Square,4Square, etc. The larger the cross-sectional area of the slightly line, the smaller the power loss when transmitting signals.