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专业功放在音响系统中占有十分重要的地位。然而,调整参数较少,一般只有二只衰减器,但就这二只衰减器的调整而言,对系统的表现或应用安全均有较大影响。 时下的一种观点是:将衰减器开至最大增益处为妥,认为此状态有减少噪音、减少过载机会等好处。但此时往往出现以下现象:即调音台稍有输出,系统即达到目标扩声响度。这时就产生了两个问题:
Professional power amplifier in the audio system occupies a very important position. However, there are fewer tuning parameters and typically only two attenuators, but the adjustment of these two attenuators has a greater impact on system performance or application safety. Nowadays a point of view is: the attenuator to the maximum gain at the proper place, that this state there is to reduce noise, reduce the chance of overload and so on. But at this moment, the following phenomenon often occurs: that is, the mixer output is slightly, and the system reaches the target loudness and loudness. At this time there are two problems: