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为了保护贵重的扩声设备,宜采取以下措施,以避免烧坏扩音机和扬声器。(1)扩音机功放级的负荷一般不能低于4Ω,更要严格防止输出端(即接扬声器的端子)短路;(2)注意功放级的散热,必要时用风扇强迫风冷;(3)应安装稳压设备,以保证电源电压稳定;(4)开机的音量要适当,以免输出过大而损坏扬声器或扩音机,特别要避免某些强大的冲击信号造成设备损坏。每逢进行开机、关机、接附件、转换开关或按键等操作时,都应先把音量适当关小。传声器跌落地面除对传声器有损外,也会出现强冲击信号;强烈
In order to protect expensive sound reinforcement equipment, the following measures should be taken to avoid burning the megaphone and the speaker. (1) Amplifier Amplifier level load generally can not be less than 4Ω, but also to strictly prevent the output (ie the speaker terminals) short circuit; (2) pay attention to the power amplifier stage cooling, if necessary forced air-cooled with a fan; Install voltage stabilizing equipment to ensure stable power supply voltage; (4) Turn on the sound volume should be appropriate to avoid excessive output to damage the speaker or amplifier, in particular, to avoid some powerful impact signal equipment damage. Whenever the boot, shutdown, accessorial, transfer switches or keys and other operations, the volume should be appropriate first off. Microphone drop to the ground in addition to the microphone damage, but also a strong impact signal; strong