Large stadiums with what speakers, JBL stereo with total generation Xin Branch Bronte

It covers an area of ??15,000 square meters, with a total construction area of ??37,000 square meters (including 9,300 square meters swimming pool). The arena In addition to the competition hall outside, the other with swimming, fitness equipment, table tennis, badminton, billiards, aerobics, dance, taekwondo, yoga, skating and other functions hall can accommodate up to 5,000 people to watch the game, is the largest colleges and universities, function the most complete sports complex. So the venues for this project very seriously sound system, extremely demanding. At present most of the domestic small and medium multi-use stadium are by considering, in addition to various sports competitions in the future to meet the functional requirements of the training, but also take into account the various types of theatrical performances, the sound system so the design when we must consider, PA do try to meet the needs of a variety of situations. JBL PRX500 series is a non-general of the PA system, according to the sound field for debugging, you can make the venue for loudness, language clear, beautiful sound. This engineering applied the 22 PRX512, 4 只 PRX518S, area colleges and universities to meet the largest and most diverse needs of the whole stadium, which shows JBL PRX500 is unusual. Bronte Henan Xin Electronic Technology Co., Ltd. Tel: 0371-63922318 63613799 Tel: 18937170393,13271581580 Cui Chuang QQ: 3135371641 Website: www.sincpro.com www.zzyinxiang.com E-mail: 1727566236@qq.com Company Address: Zhengzhou Wenhua Road Henan technology market in the customs building 621/622/623 Room No.68: 450,000 First, any one project engineering design, performance, needs to have a good pre-engineering, this stadium technical strength of the bidding parties We attach great importance to the company before the bid to arrange a number of technical personnel went to the Stadium project site investigation, sound designers use EASE design software to simulate the stadium size, shape, build sound, etc., and then combined with the sound engineer's recommendation, EASE software on the computer to make the best use of design, in consultation with the sound engineers decided on the type of sound, quantity, placement and angle. Communication with the venues for the speaker hanging point determination, and gives some suggestions to improve the sound reasonable field, the Party in accordance with the recommendations of the stadium interior and structure of some adjustments, such that the firmness of the speakers hanging high, better sound field. (A), design basis: This stadium design basis for the following: Stick the entire system has advanced, practical, reliability, scalability and flexibility. 1. Scalability: The system can not make the case for change less change, expand the system upgrade. 2 ,, reliability and stability: the system should have the ability to work long-term stability, the choice of equipment are in line with international standards of quality and reliability. 3, advanced and advanced: the system to meet the reliability and usefulness of the premise but also have a higher advanced. Program equipment should have chosen the most advanced world-class products, to ensure a long period of time is not out of date. 4, flexibility and convenience: system management and maintenance easy, simple, and flexible. 5 ,, intelligence: the system enables the integration of intelligent control, convenient connection with other intelligent systems. 6, unity: the system must be based on the principle of consistency of technical indicators to the selected device. (Ii) on stadiums acoustics recommend whether indoors or outdoor sound system design, should consider acoustics, architectural acoustics and if you make the perfect combination of sound system, is our goal. Therefore, if the venue has a good sound effect, we must first do these venues built sound design, sound design and construction will directly affect the results of the entire sound system. Sound design in the construction of the sound field to have a reasonable reverberation time, there must be reasonable internal structure and decoration materials. Then according to scientific computing, software simulation, sports hall sound field to identify deficiencies and material use reasonable acoustic reflection, absorption and diffusion process, try to improve the whole stadium architectural acoustics. Second, the main selection of equipment 1, the main speaker system: a main speaker shouldering the main PA sound reinforcement task is a stereo system is the most critical part. She is like the singer's voice, with a good voice to sing melodious songs. Therefore, select the sound loud and clear, beautiful sound, minimal distortion, reliable work is the key to project success main speaker and the owners care and pursuing goals. JBL is a famous global speaker manufacturer, has a strong R & D strength, professional speaker in the field with many industry-leading patent and technology, its speaker products are widely used in the world. JBL speakers into the Chinese mainland two decades, China has the trust of many users, with high visibility and reputation, is synonymous with high-end brands, the Great Hall of the well-known sound system we use is the JBL brand. So the stadium chose to use the world-renowned brand JBL, it is in full compliance with the requirements of Party, to protect the interests of Party. JBL Professional many products, from large linear arrays for large-scale performance of the background music of the small speakers are. In the PA system, the sharp sound company in the tender documents, technical specifications and national standards related to sound, select the PRX500 series, the series is suitable for stadiums, theaters use theater and other large halls. 2. Mixer: Mixer is the heart of a sound system, how the heart blood circulation, is directly related to the stability of the entire system, security, effects. In addition to the mixer can be connected to various sources, signal amplification, you can also connect a number of peripheral devices to be related to treatment for some signals. This stadium chosen Britain SOUNDCRAFT professional mixer, 25 years of British Soundcraft factory has become a model of sound mixer, in terms of functionality and technology ahead of the industry. Most large-scale concerts around and fixed installations are used Soundcraft mixer. Many design concept pioneered by the Choir of the company have become the basic standards of today's consoles. Soundcraft mixer, transparent sound quality, wide dynamic, low noise, low distortion, especially EQ section, not the other similar product can match. There are currently more than 200,000 sets of Soundcraft consoles in service around the world, each had used Soundcraft mixer mixer, engineers can become Soundcraft mixer quality of witnesses. 3, peripherals: audio peripheral equipment is also an important part of the PA system and peripheral equipment is related to the sound signal processing device, which a major role in the PA system is to beautify and modified the sound, the audience can be satisfied sound effects and aesthetic pleasure. So be sure to use peripherals good quality equipment, or the sound signal amplification by inferior peripheral equipment, post-processing, thereby affecting the sound quality. The system uses a Studiomaster SD260 digital audio processor and a DBX equalizer names and other world-renowned equipment, can well protect the stability and performance of the system. Third, the construction principle of the stadium PA system is generally fixed installation systems, stadium fields are large public venues, the PA system is usually frequently used in sports competitions and mass rallies, so the sound system is the first to meet the language sound reinforcement requirements, on this basis, but also capable of some large-scale theatrical performances and other activities. Actually use a PA system to simultaneously achieve the perfect sound language standard sound and performance is quite rare, such as the required large-scale theatrical performance audio system is relatively expensive, and can meet the language sound audio system is more in relative terms economy. So how to deal with relationships and conflicts between the two, but also engineering designers to consider and issue face. According to the site conditions of the stadiums, the company adopted the JBL PRX512M total of 22 speakers, JBL PRX518S speakers 4. PRX512M is a single 12-inch woofer unit multipurpose symmetrical constant horn speakers, maximum sound pressure level of 133dB; 22 speakers only hanging over the center attached to the Basketball Hall of dedicated horse trail, 14 covering the spectator stands four weeks; 8 covering the game site; PRX518SUB a single 18-inch subwoofer, maximum sound pressure level of 131dB; 4 speakers only evenly distributed around the field, to complement the low-frequency dynamics. According to the building structure and the PA need this stadium, this speaker system engineering hoisting choice of using a distributed sound reinforcement approach. Of course, both centralized and decentralized arrangement of speaker systems have their own characteristics, in fact, as long as the design is reasonable, sound lifting position, angles are accurate, so whether it is centralized or decentralized arrangement arrangement, both of arrangement are likely to achieve good Requirements sound field characteristics. In the project, the program can be weighed to determine the speaker layout depending on the actual situation. For a sports stadium, the general, the sound system can actually be divided into two areas: the venue area and auditorium area (including the podium area). 1, the venue Speaker Distribution area: This area is generally used distributed PA system, because athletes want to continue to move the venue, but also listen to clearer sound and game-related information, and must adopt a decentralized arrangement, this venue we will be dead, the sound will be evenly distributed. 2, the auditorium speakers Distribution area: This area is generally decentralized PA system, because a lot of audience, to make every member of the audience can hear the game-related information, be sure to use when sound dispersion. Of course, now there will be a lot of stadiums podium area, this area can get a small part of a centralized sound to highlight the importance of the podium area. From an acoustic point of view, unlike other stadiums halls. Sports hall when there is activity, due to the large number of people ,, have been on a lot of noise, plus the museum bulky, speakers from the audience or the athlete is still a considerable distance, so the sound pressure level to meet the field, we must also ensure sound clarity. This requires scientific design, strict and meticulous construction, high levels of tuning, in order to meet the above requirements. The current sound system technology development is not simply a question of a simple sound, which is a systems integration concept. Specifically including audio, video, computer networks, communications and other technologies, but also a hardware and hardware integration, the software also includes device control. In addition to related systems and equipment, but also closely related to the built environment. Therefore, it is a set number of technologies in an integrated systems engineering. The whole project includes not only the designer's creativity, the user's functional requirements and investment control, but also the need and construction, decoration, electricity and other departments closely. At the same time, precise reference to and implementation of national technical standards, construction norms, processes and systems engineering to get a reliable quality assurance. In addition, a project is good or bad in addition to the selection, specification of construction equipment, the debug system is extremely important, it is a system designed, installed by the technical strength of expression. Therefore, these issues are also stadiums construction in the focus needs to grasp. JBL RPX500 Series Speaker Details: JBL PRX500 series each model driving power, performance and lightweight easy installation characteristics was best reflected in the design of modern sound system. (A), JBL technology uphold JBL 60 years of professional transducer and speaker system technology, to focus on the continuous improvement of the power handling capability of the speaker system, flat frequency response characteristic, it is to reduce distortion and less power compression design, it has a higher and higher performance capabilities; dual voice coil used in differential drive now patented technology, can effectively reduce the weight of the speaker transducer. 1, lightweight design powered speakers: JBL dual voice coil transducers and differential drive Crown Class D match of PRX500 in multi-channel amplifier, making it a 30% weight reduction compared to competing products, which is the product of more Light reasons. 2, neodymium magnet compression driver: the high-frequency compression driver uses a novel 1.5-inch annular polymer diaphragm, access to lower distortion than other similar compression driver titanium diaphragm of. Neodymium magnet magnet can reduce weight and reduce the volume, discrete phase plug and streamlined bullet plugs and acoustic characteristics can seamlessly transition to the waveguide transmission, the result is crystal clear treble and precise sound coverage. 3, the waveguide: full use of a waveguide is called predictable coverage map, as far as possible from one section to another to improve the range of all kinds of audience coverage. With a system, or a pair of stacked together backlog system, PRX500 waveguide guarantee excellent coverage and has a rare, low distortion control the direction 4, the differential drive dual voice coil transducer: PRX500 using the latest JBL Differential Drive transducers patented technology, the 400W patented drive with an extended frequency response, high power output and like all JBL transducers as low distortion sound output. Unique differential drive technology to a significant, lighter box full of excellent properties can be obtained. Dual voice coil / double-gap design, installation and efficient voice coil neodymium magnets magnet, light aluminum box frame as a whole heat, lower the temperature of the voice coil to reduce power compression. (B), Crown Crown PA amplifier has 40 years of history, product design always using advanced technology, each one is a kind of solid, reliable, high-quality and innovative technology products. Worldwide, extensive application of JBL speakers and Crown amplifiers combined case, described as powerful combination. Class D amplifiers have been used for many years in the automotive professional audio, it is characterized by light weight, high efficiency and durability for a long time, use even in the most severe environments, too, excellent Crown amplifier can meet the power requirements PRX500 to full DSP functions as the front end of efficacy. The weight of the power amplifier section is not more than 9 pounds (4.1KG), the maximum output power per channel 400W, can have up to three channels. Efficient heat dissipation plate heat, no cooling fan noise. (III), structural design using the latest mechanical design software and new materials, including body surface treatment using JBL's rugged DuraFlex special paint. RRX500 cabinet design to withstand strong turbulence transport truck collision. (Iv), the protective structure from the speaker configuration memory limitations aggravation protection end bell, using the effective protection of innovation of the mast top and bottom. Speaker surface using perforated steel grille, rear facing acoustically transparent foam pad, which is a not only effectively protect the speaker unit, but also a kind of beautiful shape of the design. (E), portability which is high-performance products a new design process, not only the need to design compact size for easy installation, and it is a practice of the materials used. Use does not produce a total shock, and after a rugged ABS plate and light aluminum structure stays. . . They are all packaged in an ergonomic cabinets, making it a JBL speaker system, the highest series design process. This stadium basketball courts, outdoor playground, gymnastics room, taekwondo room, VIP room and VIP lounges, have chosen PRX500 active speaker series, her light installation, the sound pressure is high, stable quality, beautiful sound, etc., totally fit the design needs of the project. Stadium sound system engineering acoustic characteristics measurement reports Chinese Institute of Electronics, Audio Engineering Branch of the China Institute of Acoustics audio engineering branch of the acoustic properties of the stadium PA system engineering, according to "Room Acoustics characteristic measurement method" for the maximum sound pressure level, transmission frequency, sound field unevenness, audio gain, system noise and other acoustic properties were five empty field measurements in the field. And to build sound indicators related to the reverberation time, background noise is also a real empty field measurements. Now the measuring conditions are summarized as follows: 1. A measurement standards and methods of measurement conditions by GB / T4959-95 "hall sound characteristic measurement method of" national standards; 2. Performance Indicators (1) according to JGJ / 131-2000 "Gymnasium acoustic. design and measurement procedures "two indicators required standard in sound reinforcement systems; (2) according to GB50371-2006." hall sound system design "standard multi-class level, the indicator PA system. 3. Measuring instruments: US TERRASONDE, TOOLBOX, ATB-PLUS Audio Analyzer: Three acoustic characteristics of the PA system requirements: This stadium sound system works perfectly reach and higher than the national standard (ie JGJ / T131-2000 (s Gymnasium DESIGN meter and measurement procedures) secondary indicators specified in the standard sound system engineering), Refer to the JGJ / T131-2000 primary, secondary index requirements.