同样，音箱的灵敏度与信号频率有直接关系，而且还与信号的类型有关系。是1KHZ 还是500HZ的灵敏度，是粉红色信号还是正弦波信号，济南音响的灵敏度值都有不同的标注。

Similarly, the sensitivity of the speaker is directly related to the signal frequency, but also with the type of signal. Is the sensitivity of 1KHZ or 500HZ, is pink signal or sine wave signal, the sensitivity of the sound of Ji'nan are different.

输入输出电平，济南音响的输入输出接口一般都有电平值标记或选择键，比如：0dBm、0.775v、+4dB、0dBu 等等。其中，设备输入接口处的电平值一般就是该设备的输入灵敏度，所以某些时候输入输出电平标注可以归为灵敏度范畴。但并非所有接口电平都具有灵敏度的含义。

Input / output level, the input / output interface of the Ji'nan sound is usually a level value tag or select key, such as: 0dBm, 0.775v, +4dB, 0dBu, etc.. The level value of the input interface of the device is usually the input sensitivity of the device, so that the input and output level can be classified as a sensitive area. But not all interface levels have the meaning of sensitivity.

设备的输入电平值表示该设备允许输入的信号电平值(多数时候有额定值和最大值)。一般情况下，在额定电平值(0dB)输入信号时，该设备具有额定的输出值(可能是功率，也可能是电平)。

The input level of the device indicates that the device allows the input signal level values (most of the time there is a maximum value and a maximum value). In general, the device has a rated output value (which may be a power, it may be a level), when the input signal is rated at a nominal level (0dB).

通常，设备的输入电平一般都与其输入灵敏度有密切的联系。各个设备和输入电平或某种模式下的额定输入电平范围可能不同(即灵敏度不同)，有的只标注0dB，有的有-10dB 和+4dB 或+10dB供选择。通常要根据设备或系统的情况来统一设定，否则如果输入信号电平值低于输入灵敏度，就会造成该设备输出功率或电平不足;如果输入信号电平值超出该设备输入电平范围，就会造成设备输出失真。

Usually, the input level of the device is closely related to the sensitivity of the input. Each device and input level or a certain mode of the rated input level range may be different (that is, the sensitivity of different), some only 0dB, and some have -10dB and +4dB or +10dB for selection. Usually according to the equipment or system to set uniform, otherwise if the input signal level is lower than the value of the input sensitivity, it will cause the device output power level is too low; if the input signal level values beyond the device input level range, it will cause distortion of output devices.

设备的输出电平与输入电平情况类似，但是设备输出电平对连接的负载阻抗要求更具体。一般情况下，输出电平规定的0.775v = 0dB 是以一定阻抗的负载为前提的(一般取600Ω)。如果负载阻抗增加，输出电平值还有可能提高。

The output level of the device is similar to that of the input level, but the device output level is more specific to the load impedance of the connection. In general, the output level of the 0.775v = 0dB is a certain impedance of the load as a precondition (generally take 600). If the load impedance is increased, the output level may be improved.

另外，还有一些输入输出电平是以DBV 和DBU 的形式表示的，一般规定：0dBv=1.0V 0dBu=1.0uV，从上面关于灵敏度和电平的分析、比较可以看出：各类设备的灵敏度在数值上有所区别，含义也有不同，同时基准参照值也不相同。即使是同一类型的设备，它们的灵敏度在数值上可能也有很大差别。

In addition, there are a number of input and output level is expressed in the form of dbv and DBU, general provisions: 0dBv=1.0V 0dBu=1.0uV. From the above about sensitivity and level analysis and comparison can see: the difference in value of the sensitivity of the various types of equipment, the meaning is different, as the benchmark reference value is not the same. Even with the same type of equipment, their sensitivity may also be very different from the numerical value.

话筒方面：

Microphone:

一般动圈话筒的灵敏度要低些，通常情况下为：0.2 mv/pa ～ 几个mv/pa而电容话筒的灵敏度要高些，通常情况下为： 几个mv/pa ～ 十几mv/pa 甚至几十mv/pa但是铝带式电容话筒的灵敏度要低些。

General dynamic microphone sensitivity is low, usually under: 0.2 mv/pa to several mv/pa and condenser microphone sensitivity to high, usually cases for: a few mv/pa to more than a dozen mv/pa even tens of mv/pa but aluminum with capacitive microphone sensitivity to low.

济南音响方面：

Ji'nan sound:

一般高音扬声器的灵敏度高些，有的可以达到100dB/m/W 以上(这就是为什么音箱中要增加高音衰减网络的原因);通常低音扬声器的灵敏度要低些，低的可能只有80 dB/m/W 左右。

General tweeter is high sensitivity, and some can reach 100dB/m/W above (which is why speakers to increases in the treble attenuation network reasons); usually woofer sensitivity to low, as low as possible only 80 dB/m/W around.

对于其它设备，一般输入灵敏度都是以0dB 为基准的，但少数设备有-10dB 和+4dB 可以选择。而最大输入输出电平的情况就差别很大了，在不失真的情况下，有的可能是+10dB，+15dB，也有可能是+24dB，+32dB 甚至更高。

For other devices, the general input sensitivity is based on 0dB, but a small number of devices have -10dB and +4dB can be selected. And the maximum input output level of the situation is very different, in the case of non distortion, and some may be +10dB, +15dB, it may be +24dB, +32dB or even higher.

济南音响 http://www.jnzqyx.com/ 的灵敏度是一个非常有用的指标，音响师和工程技术人员经常需要它来计算录音或扩声增益、电平、选择话筒、确定系统的功率配置和扩声声压级以及系统的连接方式、端口设置等等。如果灵敏度的概念在音响技术中被忽视，可能出现设备失真、动态不足、声压级不能满足要求、设备负荷过重以及其它声音指标受到影响

Jinan sound sensitivity is a very useful index, sound engineers and engineering and technical personnel often need to calculate the recording or audio gain, level, select the microphone, determine the system power configuration and amplifying sound pressure level and system connection mode, port settings and so on. If the concept of sensitivity is ignored in the sound technology, it may appear that the equipment distortion, the dynamic problem, the sound pressure level can not meet the requirements, the equipment load is too heavy and other sound indicators are affected.