Conference Lecture Hall Solution

    Jiangxi Province Zhangshu Second Middle School, located in the beautiful Ganjiang River, is a complete secondary school. Its previous name is Jiangxi Province Qingjiang County Zhangshu Town Middle School. The school has 3,031 students and 202 faculty members, of which 78 are teachers with senior titles; 89 are intermediate titles. The full-time teacher attainment rate is 100%. For seven consecutive years, the school has won the "advanced unit" of Zhangshu Political and Legal Committee's comprehensive governance and the "advanced unit" of the city's comprehensive assessment of culture and education.

    This venue has a total of 460 square meters, creating the Zhangshu No. 2 Middle School Conference and Lecture Hall, which is mainly used as a venue for staff meetings, school performances and other larger meetings and events. Because of the venue is relatively large, in order to achieve the effect of uniform distribution of indoor sound field, we must choose the sound pressure, long-range line array audio products as the main sound amplifier speaker, and then supplemented by a professional stage rebound speaker, table lip speaker, etc., to constitute a set of perfect acoustic sound amplification system.

     The design solution used FIDEK's line array speakers FLS-280 (eight) + FLS-115SW (four) as the main speakers, FD-150NC (two) full-range speakers as table lip speaker, FD-12MNC (four) as the stage monitors, coupled with the FIDEK's FMA and FQA series of amplifiers and peripheral equipment, constituting a set of perfect sound reinforcement system.

    FLS-280 main speaker, the cabinet structure is compact, without sound pollution; coverage angle of 100 °; The combination of input and output units is used to realize the best sound field effect; adopting Russian wood plywood; The surface of the cabinet is sprayed with wear-resistant waterproof paint, which has the characteristic of good waterproof; adopting the tweeter diaphragm made of imported materials from Japan; adopting the sound cone from Taiwan; The use of two 50-core voice coil 8 "bass and two 1" tweeter; the use of high-precision crossover network; unique and efficient tweeter overload protection circuit; the system combines the sound fullness of a better, more infectious; Iron mesh is applied by multi-layer spraying to prevent rusting; stainless steel screws are used for the box surface screws; patented aluminum alloy hanging combination; easy and quick hanging method.

    FDS-150NC table lip speaker, adopting the design of woofer and aluminum cone frame and pure aluminum flat wire, equipped with original heat dissipation function, has the characteristics of high power and good performance; The tweeter adopts composite membrane compression driver, which has the advantages of high sensitivity and long transmission distance; The original thermal function design can quickly dissipate the heat generated by the voice coil to ensure the stability of the unit for a long period of time and under the big dynamics; The cabinet is made of birch plywood, which has the characteristics of light weight and high strength, and can effectively reduce the resonance of the cabinet and reduce the distortion; the independently designed cast aluminum base is reliable and durable, with particularly good strength; good directivity, 90°×50° pointing angle to obtain wide coverage of sound amplification range; The sound color is sweet, clear and delicate, penetrating, rich in layers and wide in range.

     Amplifier is one of the important equipments in the electro-acoustic system, which amplifies the audio signals output from the preamplifier or acoustic signal processor to push the speakers to make sound. Therefore, it is always in a large signal input and output operating state. The large range of voltage and current dynamics is very important for the perfect combination between power amplifier and loudspeaker.

    Therefore, in order to ensure the high fidelity of the electroacoustic system, the solution uses FIDEK's high-quality, high-power professional audio power amplifiers.

    FIDEK brand FMA series amplifiers provide power output from 450W/CH to 1200W/CH, which can perfectly provide the power load for FIDEK's speaker units. With built-in low-pass filter, pressure limiter and other processing circuits, it provides good protection for the speakers.  The excellent heat dissipation technology ensures its own stable and reliable work.