I. Project requirements
The sound reinforcement system project of Jiangyin Yang Zijiang International Chapel and Bo 'ai Nursing Home needs to meet the following requirements:
1. Meet the daily needs of the chapel, such as worship, sermon and other church activities.
2. Considering the needs of daily activities in nursing homes, such as holding some training exchanges and academic research.
3. Be able to undertake social activities, such as western-style weddings.
Second, the solution
The sound reinforcement system is designed according to the area and function of the church and the national sound reinforcement standard. The sound reinforcement system is mainly composed of speakers, power amplifiers, audio processing equipment, mixer, microphone, sound source and other equipment. The whole system is mainly composed of high-grade audio equipment with beautiful timbre in similar products, and the product model with the most mature technology, advanced performance and reliable use in similar products is selected. By calculating the sound field coefficient of the hall, the sound field in every corner of the chapel is designed to ensure uniform hearing and no bad sound effects such as distortion, deviation, mixing and reverberation. The sound reinforcement system of the chapel is mainly composed of sound source, audio processing equipment, power amplifier and speaker system.
Audio part
The whole sound reinforcement system adopts primary and secondary collocation. From the frontcourt to the backcourt, every area requires high-quality sound effects. In addition, combined with the use requirements of the chapel, we used 2-band speakers when designing the speakers. The whole chapel is divided into a big chapel and a small chapel. The specific speaker configuration is as follows:
Double 15-inch speakers are used as the main speaker of the Grand Baitang, and the main line array speakers are selected as 16 professional line array speakers CE-LR2 12, and two matching subwoofers CE-7 18 are installed on both sides of the rostrum. Four single 12 inch full-range speakers CE-3 12 are used as auxiliary/auxiliary speakers.
Chapel? The main speaker adopts double 15 inch speakers, and the auxiliary/auxiliary speakers adopt four single 12 inch full-range speakers CE-3 12.
Power amplifier part
The power amplifier system should have comprehensive protection measures, including short circuit protection, open circuit protection, overheating protection, input overload protection, DC protection and high frequency overload protection, so as to make the power amplifier work more stably. Provide good and stable power output for the speaker system. The design of power amplifier circuit is reasonable, the line distortion is as low as possible, the frequency band is widened, the frequency response curve is flat and the noise is low.
The power amplifier of the whole chapel adopts high-efficiency CE series professional power amplifier, with built-in intelligent soft start system, multiple protection system and ultra-low signal amplification system. And multiple * * output modes. According to the normal power and peak power of science and technology speakers, the redundant power configuration of 1.5-2.0 is adopted to meet the requirements of long-term work of different speakers to ensure stable performance.
Sound source part
The sound source equipment of the chapel is equipped with wireless handheld/collar clip/headset microphone, condenser microphone, chorus microphone, band microphone and 1 HD Blu-ray player.
The public address peripheral equipment of the chapel is equipped with 2 digital audio matrices, 2 professional digital effectors, 2 professional equalizers, 2 feedback suppressors, 1 intelligent mixer, 12 channel 1 digital mixer and 24 channel 1 digital mixer, which constitute the audio processing system of the chapel and the chapel. The whole system can independently control the speakers in a certain area.
This project is undertaken by German Xipai Electronics International Group, and details can be found in www.ceopa.com.