Weak current College】 【professional audio system connection --- Power By】 【China power house network.

<br> Sound system there are many kinds of connection, different systems and devices have different connection methods. But the General principles are the same, there are: audio sources + amplifier + Horn, composition. <br> 1, current sources include a .variety of musical instruments, various audio sources player and some special sound generator. <br> 2, power amplifier is made up of various amplifier circuit, can signal to the fore, to advance to enlarged after the level of the speakers. <br> .3, now generally have multiple speakers together, form the sound box, also formed a many kinds of sound box. <br> <br> These are the most simple of a sound system. Of course, now the system has joined many auxiliary equipment ., we called: peripheral devices. We are now generally in accordance with the usage and customer requirements for flexible matching audio system, but the same device different connection methods generated by the sound effects are not the same, so ask us technical staff to acquire this .knowledge. <br> <br> Audio system commonly used by the connector and connector <br> Sound system equipment and devices to achieve contact transmission, communication, and so on, must rely on its connection tools, this is the wire and connectors. .It's in the whole audio system occupies a very important role, now professional audio systems used by the connector and connector types, here we put the common types of wire and connectors for a simple description: <br> <br> First, all kinds of .wire <br> 1, professional audio cables: audio line now has two-, three-, four-or five-core, this line as shielding effect is good, can be used to transfer high-quality audio signals; now a professional microphone .generally use more than three-wire, wire and strong anti-interference ability, can do long-distance transmission. Of course, this wire can also be transferred to other signals, such as shipping PC lamp DMX512 control signal. <br> <br .> 2, coaxial cable line: generally used in the video, there are also some audio line, because of this poor wire anti-interference ability, plus the design time is mainly used to transfer audio signals, and therefore not suitable for long distance transmission .of audio signal. <br> <br> 3. centralized cable, is more than one signal line wrapped in a protective tube, typically connected system used internally to reduce the number of independent wire. Now also used in countries such as television ob van ., underground embedded and other special areas. This line usually have the professional manufacturers of processed, quality is guaranteed. <br> <br> 4, fibre: many CD or MD, recording and playing the sound equipment on frequently used transmission wires, it .is a digital signal transmission. As the popularity of digital, future fibre in the sound system in use is more and more. <br> 5. MIDI cable, usually for five core wire, transmission information about MIDI, most use in keyboards, effects ., and other devices. <br> <br> 6, there are also special steel, such as computer Karaoke system originally used to connect to the network core line can now be used to transmit audio and video, computer automatic on-demand functionality. .<br> <br> Second, the variety of connectors: <br> 1, XLR, commonly known as card Lennon connectors (Cannon), this type of connector is a three-point, 1-2-Ground grounding; - the .hot end (+); 3-the cold end (-grade), there are of course also provides 3 in the device is the hot end (+); 2 is the cold end (--), this point to see the device's .manual. Card connection plugin is looking for professional sound system in the most widely used type of connector that can be used to transmit sound system in all types of audio signals, generally balanced input and output terminals are you using the card to connect the plug. .In a sense, the use of the card connector is also looking for professional sound system is different from the one of the characteristics of a commercial sound, the benefits are: <br> A, adopt balanced transmission, resistance to outside interference ability is more .conducive to long distance transmission. <br> B, lock the device with the spring, the connection is reliable, it is difficult to pull off. <br> C, connector provides signal flow, easy to prevent connection errors. <br> You .plug the card with Plug and plug, socket also have public outlet with female socket. Plug to contact is the PIN, and the mother of contact is the jack plug. In accordance with the established practice of the international General to make public the plug or .socket signal input; to female plugs, socket-outlets as a signal of the output. <br> <br> 2 RCA: in General, commonly known as Lotus head (for some type of RCA connector appearance apparently Lotus petals), this type .of joint is composed of two nodes, respectively the hot end (+); cold-side ground (-), the use of coaxial cable connection, of course you can also use multicore audio cable, frequently used in general home audio equipment. Because .of its length in 3.5 centimeters, so usually I called it: 3.5cm plug. <br> <br> 3, TRS, generally called stereo connectors, it is made of three nodes, respectively: the head-end (+); loop .-end (-); the Earth (Ground), the use in small headphones on length 3.5 centimeters, but most still use in professional audio, its length is: 6.35 cm, professional mixer for high-impedance input and inserted into a socket are .mostly use this plug, other audio equipment also mostly with this port. <br> <br> 4, TS, commonly known as tone (voice) connector, this connector is composed of two nodes, respectively head-end (+); earthing .terminal (Ground). Both of these connectors are used in professional audio in its length in 6.35 centimeters, so usually I called it: 6.35cm plug. Although TS connector and TRS connectors both length, the appearance is also very similar, but specific features .may be different, TRS stereo connector can use three do balance means of transmitting signals; but TS mono connector can only be used for non-balanced signal transmission. <br> <br> 5, MIDI connector, use the connector on the MIDI applications ., there are five pins that deliver relevant information on MIDI. <br> <br> 6. speaker connectors, now generally use a four-core professional connectors, use TS mono connector orBy other methods. <br> <br> 7, various .adaptors: you can easily use this connector to convert between various different connectors. <br> <br> 8, there are other special connector here don't do too much about it. <br> <br> Third, the sound system in .the making of a connector <br> Current professional audio device input and output signals means basically divided into: Balance balance and Unbalance unbalanced manner. Balance and equilibrium and non-equilibrium and non-equilibrium between ports is, of course, you can directly feed .the signal; the more sophisticated, balanced and non-equilibrium between ports, shall be specially converter to connect. But in a real project, as long as the signal cable is not too large, interfering with not too much, balanced and unbalanced port can .be directly connected to the normal transmission signal. In a set of audio systems, in addition to the power amplifier and power transmission lines between the speakers, other devices connecting to be as much a balanced approach to transmission, which may improve system anti-interference .ability and increase the effective transmission distance signals, the line: <br> A, balance and equilibrium between signal lines: <br> 1. you "by male XLR card → Nong female XLR card: this line in professional audio systems used by most ., making the card between the public and mother of Pearl Diver 1, 2, 3, three contacts separately, contact 1-shield, contact 2 then signal the hot end (+ a), point 3 received signal cold end (-a). .<br> <br> 2, TRS stereo TRS stereo connector joints →: production respectively two TRS stereo connector between the head-end (+), loop-end (--), Earth (Ground) three contacts respectively. This line is .actually in audio system should also be used, but a lot of sound Division as Figure easy, often use TS tone (voice) connector instead, and this is particularly important to note that such a place of signal transmission way from balance transfer into non- .balance transfer. <br> <br> 3, XLR card Lennon public or female → TRS stereo connector: making card XLR connector contact 1 Lennon (shielding ground) butt TRS stereo of Earth (Ground); XLR connector 2 hot end (+ a .) butt end of TRS (+ a); and the XLR 3 cold end point (-a) docking ring-TRS (-a). This is also a kind of balance transfers in professional audio systems are frequently used. <br> < .br> 4, XLR card Lennon public → XLR card Lennon public or XLR card mother → XLR card Lennon Lennon Bus: this line is a bit special, maximum use of the power amplifier and amplifier or amplifier and other peripheral equipment signal connection between the production .is both connectors between 1, 2, 3, three contacts separately, contact 1-shield, contact 2 then signal the hot end (+ a), point 3 received signal cold end (-a). <br> <br> It is .also important, in order to prevent interference with the "loop", we can get a signal cable XLR card in a joint contact 1 Lennon (shielding ground) or a TRS stereo connector of the Earth (Ground) in special cases, empty out a .to do next, for example: an XLR male to XLR Lennon card card balance line Lennon mother, we are able to empty out of you "by female XLR card inside contacts 1 (shielding ground) is not received, this prevents some interference between devices .; TRS connector principle, any empty out a ground (Ground) contact. Such a balance line when we originally in making total welding six spot, now vacated a to is welding 5 spot, but non-equilibrium line cannot use this method. <br .> <br> B, non-equilibrium and non-equilibrium between signal lines: generally refers to TS tone (voice) connector → TS tone (voice) connector between signal lines, this is a non-equilibrium transport modes, making respectively two TS .tone (voice) connector between the head-end (+), Earth (Ground) of the second contact, respectively. <br> <br> C, balanced and non-equilibrium between signal lines: XLR card Lennon public or you "by .female XLR card → TS tone (voice) connector, this connection is actually signal has become a Nonequilibrium transport modes, making you "connector XLR card contact 1 and 3 merge received shielded wire and then docking TS tone (voice) connector of the Earth ( .Ground); XLR connector 2 hot end (+ a) butt TS tone (voice) connector on the head-end (+ a). In professional audio system in this line is often used in the balcony Karaoke system microphone line. <br> .<br> D, speaker cables: in a professional audio system power amplifier and speaker connection in, speaker line of resistance should be low, thick, short some of wire rod and reasonable wiring. Now the speaker generally use four core professional fitting, amplifier .also generally use a four-core professional connectors or terminal, in the production, the speaker of the four core professional Connector 1 (+ a) and 1 (-a) and the amplifier output (+ a) and (-a) correctly connected .. There are also some use of TS mono connector and wiring speakers or amplifier, the principle of its connection. Are positive to the negative terminal on positive, negative, if connected backwards speaker will invert, it will affect the sound quality and stability, while .at the same time avoid a short circuit at connection time, will damage the amplifier. <br> <br> In General, the above is that we often use in the system connector types, maybe before it did not attach great importance to the signal .cable and loudspeaker cables, signal lines as an example: in fact it is just like the human body's blood vessels like important! and stability and long-term considerations, we have to use high-quality wire and high quality Plug and guarantee high-quality ., trouble-free welding fine for them. Now I do works no matter how busy so tired, system connecting all's I used to own hand-welding, if someone else welding signal cable is connected to the system, the heart that there is no end ., as if you don't know where along the way will have a mine, you would not know which signal cable when failures occur, relatively speaking, then rotten device I can believe it's stability, but I will not be casuallyBelieve that quality is not .guaranteed by signal connector and speaker line! <br> <br> 4. sound system equipment connection order: <br> Making up various signal connectors, be prepared for the device is connected, and now audio system peripheral equipment, connect time always has .to be there, in my last year a series of articles in fact has already introduced here and summarized in a few simple connection order: <br> 1. bass system device connection order: sound mixer (1-2 marshalling) → Equalizer → divider .→ compressor for → Bass Amplifier → sub-woofer. <br> <br> 2, auxiliary sound system equipment connection order: sound mixer (3-4 marshalling) → Equalizer → delay unit (optional) → compressor for → secondary speaker amplifier → .secondary speakers. <br> <br> 3. the main sound system equipment connection order: sound mixer (LR main channel) → Equalizer → actuator (optional) → feedback suppressor (optional) → compressor for → main speaker amplifier → main speakers. .<br> <br> 4. listen for system devices connection order: sound mixer (AUX output) → Equalizer → compressor for → za PA → za. <br> <br> Above 1 kind of connection can be individually controlled bass volume, .so we at âý or when the mixer 1-Deko 2 marshalling of volume can turn up some, singers can open smaller, thus very flexible; the second connection method can also be very good control of auxiliary speaker voice; 3 the main speakers we of .course habits from the mixer's output to LR total output volume; the 4 types of listening systems standards to come from the AUX output volume, so you can follow the singer or band, flexible adjustment of the volume of the sound channel mixer, but in smaller .audio system, you can listen for the signal directly from the main channel signal. The above paragraphs 1 and 2 kinds of connection method also note: since the 1-2, 3-4 group we have from behind the output independent output signal to the .subwoofer system and auxiliary systems, 1-2, 3-4 group do not pass the total volume of the mixing console output, that is 1-2, 3-4 marshalling to the total volume of the mixing console switch is no longer open. .<br> <br> Of course we still according to the needs and the number of devices for flexible arrangements when the device is connected, the above sequence in the order for reference only. <br> <br> 5. device connection points: .<br> The above simple describes a variety of connector types, production, and device connection order, in the device specific connections, the face of all kinds, ranging, lots of audio equipment Jack guru does not know how to start, is actually very .simple, you only remember the following points would be great: <br> 1. Balance balancing mode: most audio devices on the back panel of the phone jacks are balancing port, we just select the card with XLR connectors balanced line customers to connect to .the device or the balance of the stereo connector TRS6.35cm line to connect to the device. <br> <br> 2, non-equilibrium Unbalance: Although most Parties sound equipment on the back panel of the phone jacks are balancing port, but .there are some device or a non-equilibrium port, such as some electronic divider output jack of the labeled: BalanceOUT (balanced output) and UnbalanceOUT (unbalanced) output, so we can use TS6.35cm mono connector of non-equilibrium line to connect .to the device, as long as the line is not too long, not too large, interfering with such connection or you can. <br> <br> 3. IN the input and output: OUT of the beginners at the back of the device .there are so many outlets, Halo, in fact, there's a trick: whatever audio device, basically can be divided into "IN type" and "OUT" most of the output, therefore we only identify "IN and OUT" just fine, other .unfamiliar Jack don't connect, connect devices like water: water flow from upstream to flow into the "enter"; IN which flows downstream water will pass the output of the "OUT" and then stream out, so that the help is not very .simple and straightforward? <br> <br>.