Installing tools can avoid this problem. The specific practice is as follows:

The disadvantage of traditional sound column installation tools is that they drill holes on the sound column, and people in the Aegean region cannot avoid heart attacks. Using a wooden style An I, cut a piece of 0.20mm thick phosphate copper skin with a size of 25x57. (Mainly using copper shell material to optimize its good elasticity, then bend the end of the phosphate copper shell into a curve R5. Next, flip the phosphate copper skin to 30mm and flatten it.). Perform welding in the department. Thirdly, find a 4mm thick and 150mm long copper tube with an R15 bend angle and a straight front end of about 10mm. It can be used when installing speakers in phosphide copper foil. After installing the sound column into the wall, tilt the tool at a certain angle. Due to the elasticity of copper hoses, the sound column will not fall off