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专业音响的声学特性不仅要满足声学特性指标国家标准的要求，还要满足主观听音的要求，因为声学特性指标不能完全体现实际声音效果，声音的好坏最终是由人的主观听音感觉来决定，在声学设计时，电声与建声设计应良好配合，满足以下主观听音要求：合适的响度。
Acoustic characteristics of professional acoustics should not only meet the requirements of national standards for acoustic characteristics, but also meet the requirements of subjective audition. Acoustic characteristics can not fully reflect the actual sound effect. The quality of sound is ultimately determined by people's subjective auditory sense. In acoustic design, electroacoustic and acoustic design should be good. Cooperate to meet the following subjective listening requirements: appropriate loudness.
响度是实际听音的强度感觉，它与扩声系统的最大声压级指标有直接关系，对于演出来讲，只有达到足够的响度，才能使音响效果得以充分表现。系统输出功率、音箱的摆放位置等将直接决定听音区域的响度状态：高清晰度。
Loudness is the intensity sense of actual listening. It is directly related to the maximum sound pressure level index of sound reinforcement system. For performance, only enough loudness can make the sound effect fully displayed. The output power of the system and the position of the speaker will directly determine the loudness state of the listening area: high definition.
作为演讲使用时，必须保证语言的清晰度，如果人们不能听清演讲者的语言，就会影响演讲的效果。因此，在电声系统设计时要充分考虑提高语言清晰度：足够的丰满度。
As a speech, we must ensure the clarity of the language. If people can't hear the speaker's language clearly, it will affect the effect of the speech. Therefore, in the design of the acoustic system, we should take full account of improving the language clarity: enough fullness.