音响设备该系统由多功能设备组成，音频设备根据使用要求进行设计，选择使用的设备，并根据设计要求连接和配置这些单独的设备。完善的音频设备，满足您的设计需求。对于固定安装系统，设备需要安装在机柜中，所有系统连接都需要按照特定的标准和标准进行固定安装。
Professional audio equipment the system is composed of multi-functional equipment. The audio equipment is designed according to the use requirements, the equipment used is selected, and these separate equipment are connected and configured according to the design requirements. Perfect audio equipment to meet your design needs. For the fixed installation system, the equipment needs to be installed in the cabinet, and all system connections need to be fixed installed according to specific standards and standards.
对于音乐会、户外演出等临时安装的移动系统，需要对设备和线缆采取有用的临时固定措施，以确保安 全。连接和安装音频设备涉及许多工程挑战，包括音频控制室的设计和建造、音频设备电缆的管道工程以及系统供电。
For temporarily installed mobile systems such as concerts and outdoor performances, it is necessary to take useful temporary fixing measures for equipment and cables to ensure safety. The connection and installation of audio equipment involves many engineering challenges, including the design and construction of audio control room, plumbing of audio equipment cables, and system power supply.
音响设备在信号传输中需要注意的问题：
Problems needing attention in signal transmission of professional audio equipment:
1.阻抗匹配。
Impedance matching 1.
信号输入端口是信号输出端口上的负载，阻抗匹配需要满足的程度通常取决于信号输出设备的设计要求。为了优化音频信号的传输状态，信号输入接口的阻抗需要满足信号源输出接口对负载的阻抗匹配要求。否则会影响音响设备的工作状态，造成输出信号失真。
The signal input port is the load on the signal output port. The degree of impedance matching usually depends on the design requirements of the signal output equipment. In order to optimize the transmission state of audio signal, the impedance of signal input interface needs to meet the impedance matching requirements of signal source output interface for load. Otherwise, the working state of audio equipment will be affected, resulting in output signal distortion.
在严重的情况下，存在损坏声源设备的风险。理论上，当输出阻抗等于负载阻抗时，信号传输效率高。输出阻抗大于负载阻抗，大部分信号功率损失在信号输出电路中，这显然不利于信号传输。因此，音频设备通常设计为输入阻抗大于输出阻抗。
In severe cases, there is a risk of damage to the sound source equipment. Theoretically, when the output impedance is equal to the load impedance, the signal transmission efficiency is high. The output impedance is greater than the load impedance, and most of the signal power loss is in the signal output circuit, which is obviously not conducive to signal transmission. Therefore, audio devices are usually designed so that the input impedance is greater than the output impedance.
一般来说，如果负载阻抗大于信号输出端的阻抗，音频设备的连接就可以正常工作。但是，音频设备的输入阻抗不能设计得过高或过低，过高会降低馈线性能，过低会降低频率指标。
Generally speaking, if the load impedance is greater than the impedance of the signal output, the connection of audio equipment can work normally. However, the input impedance of audio equipment cannot be designed too high or too low. Too high will reduce the feeder performance, and too low will reduce the frequency index.
2.信号传输电平。
2. Signal transmission level.
音响设备连接的目的是传输信号，好的音频信号传输条件是信号源的输出电平需要大于输入接口的灵敏度，否则信噪比指标会变差。音响设备上的线路输入和输出电路的增益通常要很平衡。换句话说，器件在输出过程中不会扩大或衰减输入或输出信号电平并保持电平值。主要检查液位控制装置的调整。
The purpose of professional audio equipment connection is to transmit signals. A good audio signal transmission condition is that the output level of the signal source needs to be greater than the sensitivity of the input interface, otherwise the signal-to-noise ratio index will become worse. The gain of line input and output circuits on audio equipment is usually well balanced. In other words, the device does not expand or attenuate the input or output signal level and maintains the level value during the output process. Mainly check the adjustment of liquid level control device.
