MzTH56模块上还有一个两针的焊盘，是用于外接喇叭的，用户可以使用8欧姆的喇叭，将喇叭的两条线焊接入模块标有（J4）的两针焊盘即可。-MzTH56 module, there is a two pin pad for external speakers, the user can use the 8-ohm speakers, the speakers of the two lines is welded into the module (J4) pin pad can.