CS series are a professional linear column speaker developed by SHOW. There is a 1.0mm mesh and 0.8mm thick iron mesh on the front of the speaker. It can effectively prevent dust from entering the speaker, and the high-strength iron mesh can well protect the speaker unit from being damaged by external forces. The wooden box is made of full plywood, which makes the box lighter and more solid. The surface of the box is sprayed with fine sand paint, which feels more delicate. 3” full-range speaker unit, with straight paper body and cloth suspended edge cone. The speaker vibration system is lightweight and highly sensitive. The sound system uses a power transformer to switch the system power, which can effectively protect the speaker. To prevent high-power input signals from damaging the speaker, multiple units can be used in parallel without causing low impedance and damaging the PA amplifier. The screws of the fixing bracket are locked on the fixing plate inside the wooden box. The fixing plate is a 3mm thick iron plate. The large area of iron plate can effectively decompose the tension of the bracket, and the locking screws are M8, which can withstand huge tension.