1现场扩声前的准备对于一项现场扩声的工作,首先要对此次任务的具体活动和场地环境作一次详细的了解,并据此设计系统方案,特别要注意以下几个问题。(1)了解活动的内容,以确定系统解决方案及设备配置及选用,需要哪些音源,需要几台功放(每台500W)和音箱;(2)现场电源事前到位,保障系统安全可靠的运行;(3)活动前必须进行系统的统调,尤其避免回授点;(4) 1 Preparation for live sound reinforcement For a live sound reinforcement work, we must first understand the specific activities of the mission and the site environment for a detailed understanding of the design of system solutions accordingly, with particular attention to the following questions. (1) understand the contents of the event to determine the system solutions and equipment configuration and selection, which needs the source, the need for several amplifiers (each 500W) and speakers; (2) field power in place to ensure the safe and reliable operation of the system; (3) Before the event must be systematic adjustment, in particular, to avoid the return point; (4)