【 Weak current College 】 back to listen to the system design and debugging---Power By 【 China power house network 】

1. to listen to the power of

General to the hearing amplifier power shall not be less than the main amplifier power of 20% ~ 30%, of course, in theory, this is not quantitative, but there is a scene in principle, that is, when the player is returned to singing sound area behind the main sound reinforcement speaker, the main sound of access must be given back to listen to the speaker, once you leave this area (i.e. is the primary sound reinforcement area) you should hear back to listen to the voice that should be the main speaker in full voice, otherwise it is easy to result singing performers feel ambiguous and vague, they confuse the public, at a loss. This explains, at this time to listen and the main sound reinforcement should be integrated, and to mutual coordination and balance, volume adjustment, ensure good fusion.

2. equipment configuration


Since returning to listen to the speaker and the microphone was recently, and most of the time to listen to the singers in the region, thereby easily produce microphone feedback whistling, so back to listen to speakers the best selection of specialized horizontal speaker. This speaker designed mostly small size, power, its speakers Ortho spindle horizontal General angle 45 °, set-up by reasonable adjustment, can greatly reduce ground reflection sound into one microphone, thereby enhancing the microphone and gain, nor does it affect beauty stage. Back to listen to the power amplifier and amplifier selection without distinction, it should be the main amplifier and the level of treatment. In more than one return to hear system Ballroom, mostly does not use the equalizer to listen to the PA a very conservative, and they think back to listen to the equalizer easy, in fact, this understanding is biased. Earlier we said before, to listen to the area of the microphone to listen to very easily because of the sound signal feedback produced Whistler, reducing microphone gain, if so, then we lose the settings back to listen to the significance of the system, so it should be the best selection of high quality is 1/3 octave equalizer, mainly used to inhibit the squealing noise. As for other peripheral devices, in General, you can, regardless, the equalizer is indispensable.

3. connection and debugging

If you are relatively small stage, we can set up two or four back to listen to the speaker, to listen to the signals from the mixer's private listening interface or auxiliary output interface. The signal from the lost people channel mixer in listening knob or auxiliary knobs through prorated, mixed form, and finally to the stage all singing performers can hear from and return to listening to all the tracks sound. If you are a relatively large stage, musicians are musical instruments around General places, such as guitar za, bass, keyboard, and so on, then let them return to acting as a musical instrument eavesdropping speakers to listen to the speaker, and returned to the stage one of the main hearing the sound out of the human voice, because of the musical instruments on the stage sound sound basically already large enough (of course you can also add one musical instrument sound). Drummer since the siege at the drum, but mostly a drum set, also is to use transparent plexiglass will drum up all the block so that the drum itself rap and PA drums mutual interference, so when the drum, drummer may hear other sounds. Therefore, there must be placed a drummer can only send one full track signals back to listen to speakers, but at this point to note volume adjustment, so as not to cause black pickup the handset and crosstalk feedback, it is best to let the drummer uses high-quality headphones.

Because of its own design of mixing console, all of the above sound compensation and attenuation faders adjust and audio-visual distribution are not returned to listen to signal generation, that is to adjust the master yinyuan in sound reinforcement system of all actions have no effect on back to return to listening to the system, listen to the size of the signal mixer mainly consists of transporting people channel with gain, coarse or auxiliary button knob eavesdropping as well as the corresponding synthesis of plate sniffer output or auxiliary output synthesis. Debugging we must control the various voices of sniffing out signal proportional to ensure that the road back to hear the signal good definition of balance. In practice, often there will be one of the musicians that their own musical instrument eavesdropping signal small to upgrade, because the masking effect immediately another musicians will certainly consider your own monitor signal is also smaller, but also to upgrade, and so on, as a singer in all musical instruments to listen to the sound and surround, quickly feels couldn't hear your own voice, singing the unwieldy, musical instrument eavesdropping signal increases we can easily achieve, and the singer's voice due to their own conditions as well as microphone feedback point of presence, and many other factors, its back to listen to the sound cannot be increased indefinitely, which form a vicious cycle, reduce headaches and vexing yinyuan, at this point we must communicate with the musicians singer, an appropriate amount of balance lowered the volume of the instrument, make a musical instrument signal smaller sound prominence, naturally into the music, not just too high, resulting in raised the pressure he, incompatible, uneven results. So in return to system debugging, you must maximize the find the right balance of regulation, so meticulously repeated back to listen to the system to achieve the desired effect of us expected.



Return to listen for system debugging without a quantitative and qualitative operation mode, as long as your debugging and obtain the accepted norms for the very good results, this is what you're thinking of standards, so we must be careful practice, meditation, summary, inorder to improve their comprehensive level, ability to control a variety of large-scale performances.