【 Weak current College 】 Stadium sound reinforcement system construction of small problems

Design is a prerequisite for the construction, construction will provide feedback to the design, make the design more reasonable. Will now be in the design and construction of the problems encountered and lessons learned with our audio enthusiasts share, anomalies please correct me.
1. speaker layout and sizing
According to the architectural characteristics of the venues, the main function of the purposes and characteristics of the integrated speakers, consider layout mode.
Stadium speakers use a decentralized layout, the benefit is more uniform distribution of the acoustic field, there is no acoustic shadow area, the sound reaches the audience's time, there is no delay sense; in addition the audience can get more direct access to sound, the reverberation time of sound field in beneficial to increasing clarity. Speakers choose better directivity Horn speakers, conditions allow it can also select the linear array.
Stadium Speaker layout mode is more flexible, decentralized, centralized and hybrid variety. Centralized sound reinforcement can effectively avoid multiple speaker voice interaction, will also help to improve the consistency of acoustic phase. Speakers to use power point remote speaker so that the audience gets direct access to as much as possible. Mixed layout can be decentralized and centralized or decentralized local concentration as a whole. No matter what kind of layout, ultimately to achieve increased direct sound, improve clarity of purpose.
2. construction
2.1 laying cables
1) cable laying often and construction, decoration and other departments to cooperate with the opportunity of choosing a laying.
2) system in the laying of cable ends to leave enough margin, Ning long not to short to avoid late-stage construction of the extension cable is too short.
3) it is necessary to pay attention to the protection of the line pipe, especially the ground laying of the pipeline, to tape bandage its interface, avoid cement and other sundries. To prevent vehicle nianzha damage, necessary to put the line pipe buried underground. Line pipe outlet mouth to mouth on plastic protector. Bending steel pipe, be careful when using specialized tools for bending multiple times in order to avoid dead corner and broken.
4) cable tray installation has to be beautiful, and detours.
5) cable ends to timely placement of labels to find.
6) cable show line pipe or cable tray, to be used in fabric package maximum protection to avoid missing or defaced.
2.2 speakers of hoisting
1) speaker installation angle according to the design requirements, and repeatedly adjusted, it is necessary to be able to cover the entire Auditorium, but also to guarantee the uniformity of the sound field. In the entire system after installation, the instruments and listen to the sound of lifting angle for further adjustments.
2) Auditorium is the main sound reinforcement area, competition venues of sound reinforcement characteristics indicators can be used with a sibling or reduce a Auditorium.
3) Stadium Speaker hoisting points are often high off the ground, so during the installation process, be sure to fasten your seat belt, and ensure personal safety. On the appointment, tools and other debris not misplaces, avoid falling.

2.3 insert installation
1) rostrum, judge seats and Stadium venues around usually has a microphone jack, these ground socket for the bottom box installation height slightly below the floor or ground, so that the box has more space.
2) to pay attention to the orientation of the plug and the bottom box into line direction, try to make beautiful, symmetrical.
3) from the line pipe outlet outlet to the cartridge to use hoses and fittings, and bandaging, prevent metal cut cable.
4) bottom box installed before installing and plugged in, you want to install the closure plate seal, prevent debris entering.
2.4 peripheral equipment installation
1) devices before installation, first to the laying of cable, to ensure that all normal checks and no short circuit or open circuit, the subject line intact.
2) equipment cabinet installation construction by a figure, as far as possible ensure that the quality of the arrangements in the following; minimize connection cable length and cross-device to have a reasonable interval, is conducive to the heat and balanced appearance.
3) lines that all equipment, including the power cable, signal cable, speaker cables and the control line, etc., to fixed online tank or cabinets, both beautiful and strong, and left margin to convenient pluggable. Equipment and cable ends to affix a specialized label, easier to find.
2.5 other considerations
1) all equipment, cable's certificate, instructions, warranty cards, as well as spare parts to keep the plug for acceptance and inspection purposes.
2) sound reinforcement system construction often need other construction unit, doing well with other construction units, will have a multiplier effect.
3) devices installed to transfer to the buyer as soon as possible. Upon completion, to apply for acceptance in a timely manner.
4) do the work, the rational use of time, a good grasp of the construction progress, arranged chronologically, to advance work to do ahead of time. Do people, and so on, must not be allowed to work, etc.
5) doing the daily work record and equipment operation records, for the initiative.