吊顶上面有两个音响那背景墙那边装那种音响插座图片

供应平衡或不平衡式立体声线路输入 平衡或不平衡式立体声线路输入◆频率响应（IV输出）       10Hz-6KHz ±3dB                           20Hz-20KHz ±0.5dB◆话筒E.I.N(22Hz-22KHz)    -129.5dBu,150 ohm声源                           -117.3dBqp,150 ohm 声源：                           -132.0dBu,输入短路                           -122.0dBqp,输入短路；◆增益范围                 +10dB～+60dB◆信噪比                   ﹥113dB◆失真度（THD&N）          0.07%(+4dBu,1KHz)◆均衡                      高频： 12 KHz  ±15dB                            中频： 5 KHz  ±15dB                            低频： 80Hz  ±15dB◆最大输出（主输出与编组输出）     +22 dBu 平衡式XLR                                   +22 dBu 不平衡式，1/4″插座◆辅助返回增益范围          - ∞～+20dB◆辅助发送最大输出          +22 dBu◆电源                      AC 220V/50～60 Hz◆包装尺寸HWD(mm)           170×540×430(0.04CBM)展开