source:Industry News release time:2022-05-05 Hits: Popular:Brand bar audio wholesale
speaker
Speakers are the mouthpiece of the entire sound system and should be considered as the primary factor. Speaker selection should start with the sensitivity and rated power of the speaker to determine the power of each sound source. The directivity of the speakers is used to analyze and control the sound field of the hall, determine the position, input impedance and input power of each speaker, and calculate the matching power between the speakers and the power amplifier.
power amplifier
In order to ensure the overall sound quality of the sound reinforcement system, the power amplifier must have enough power margin and can work stably for a long time. At the same time, the selected amplifier should have perfect technical measures to improve efficiency, reduce distortion, short-circuit and no-load protection, and reduce temperature rise.
Mixers and other equipment
The mixer is the heart of the entire sound system. It should have good electrical performance, stable working state, flat frequency response, and minimal harmonic distortion. The functions of the mixers vary greatly, so it is necessary to select different numbers according to the functional requirements of the entire system. Mixer for input channels and output groups.
In addition, you can choose a suitable equalizer according to the acoustic requirements of different halls. Delay, reverb, compression limiter, frequency shifter and other equipment form a normal, stable and reliable sound reinforcement system.
Program source device
The program source part includes the reception and rebroadcast of FM and AM broadcasts, and the playback of records (including CD records) and tapes. Since the input level of the program source part is low, all components and equipment must ensure high sensitivity, high signal-to-noise ratio, low distortion and good reliability.
The choice of microphone
The microphone is the first-level "entrance" of the sound reinforcement system. The natural sound source signal passes through the microphone sound-electrically converted output voltage, which is processed and amplified by the mixer and the power amplifier, and fed to the speaker system, which is amplified. Multiples can reach tens of thousands.
The performance of the microphone directly affects the quality of the system; the characteristics of the microphone itself directly affect the sound pickup and playback effect of the system; the placement of the microphone directly affects the transmission gain of the system; the signal feed of the microphone directly affects the system signal-to-noise ratio. The correct use of the microphone is one of the keys to the good working condition of the entire audio system.
The selection of the microphone must be adapted to the acoustic environment where it is located and the sound pickup object. It needs to be weighed according to the overall requirements of the sound reinforcement system, the application occasion, the sound pickup source, the technical characteristics of the microphone itself and the characteristics of the hall.
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