Key points of sound reinforcement system design

1. Auditorium:
A multi-purpose auditorium for conferences, performances and films, with a framed box stage,
For example, the design of a two-story, balcony of about 200 people, the entire auditorium can accommodate 1100 people, the auditorium reverberation time is 1.46 seconds at 500HZ, 1.09 seconds at 2000HZ.

The main sound reinforcement system serving the audience adopts the mode of centralized and decentralized combination. Centralized speakers are arranged in the sound corridor above the stage entrance as the main speaker system group of the auditorium includes: 60 x 40 four treble horns, 90 x 40 two treble horns and four low frequency speakers (firmly hoisted in the sound corridor without mechanical noise due to vibration), radiating the floor, balcony and audience area under the stage; The left and right walls of the stage entrance are equipped with a three-frequency combination box, which radiates in the middle and front area of the auditorium, and can move the sound image of the speakers in the sound corridor above the stage entrance down to ensure that the sound image of the arena is more natural; Under the picking platform, six full-frequency engineering series sound and delay device are used as the picking stage complement; The stage mouth return system serving the performers on the stage is composed of four two frequency return sound; Two full-frequency boxes are arranged on both sides of the platform entrance for those seated on the rostrum to hear during the meeting. The technical rooms in the auditorium, such as dressing rooms and light control rooms, are equipped with monitoring systems. The arrangement of sound transmission points is: on the walls on both sides of the stage entrance, under the stage floor, on the inner wall of the orchestra pit, in the auditorium (on the outer wall of the orchestra pit), on the walls on both sides of the auditorium on the first floor, in the front row of the auditorium on the second floor, a total of 80 microphone points or more are required, which are flexibly transferred to the tuning channel by the user through the jack hole in the machine room. In the peripheral equipment, the system is equipped with a digital reverberator serving the audience; The distribution amplifier is configured for the transmission of sound reinforcement signals and the exchange of external signals, which can meet the needs of the retransmission situation; A feedback suppressor is provided in the channel. A real-time spectrum analyzer is added in the system, and its measuring microphone is fixed in the pick for users to monitor and adjust.
If the auditorium needs to be equipped with a movie system, it should be equipped with three movie machines (one of which is a standby machine). The sound recovery system adopts the DOBLY five-channel sound recovery system. There are three main combined speaker groups and two subwoofer groups behind the screen, left, middle and right. More than 20 ring speakers are installed in the auditorium on the first floor and in the balcony on the second floor. All selected speakers are THX certified.

2. Multi-function hall: sound reinforcement system
The multi-function hall is the place where receptions, banquets, dances and tea parties are held, and the sound reinforcement system is very important. The system should set up two independent sound reinforcement systems for music and language: 10-14 full-frequency engineering speakers should be hidden in the ceiling for amplification during meetings and banquets; Four groups of combined speakers should be set up in the four corners of the hall, each group consists of a full-frequency speaker and an ultra-low frequency box for performance, dance and other occasions.

3. VIP reception Hall: Negotiation Hall: sound reinforcement system
VIP reception hall and negotiation hall are the most important places, which should be mainly in the form of meeting dignitaries and talks, and it is necessary to ensure good language clarity and beauty. The reverberation time of the VIP reception hall is 0.7 seconds at 500HZ, and the reverberation time of the negotiation hall is 500HZ0.8 seconds. The main sound amplification of the two halls is composed of a series of full-frequency engineering speakers hidden in the top. The microphone points in the hall should be decorated with 0 underground and wall-buried microphones. At the same time, the system should choose 16 automatic voice control tuner stations and ordinary tuner channels of Yaneser road to exchange phase structure through the conversion strip, so that the speaking points in the hall can be flexible, speak freely, and use is very convenient. At the same time, the system uses a professional booth that can monitor the signal after recording to record, ensuring the reliability of the recording on important occasions.

4. Conference hall: sound reinforcement system
The conference hall is based on the conference, the main sound reinforcement considers the language, the top is fortified with two full-frequency engineering series speakers, and a mobile PA system is set up for other activities to use flexibly.