• The enclosure of ELV-181 uses 18mm plywood and its baffle uses 25mm plywood. Plywood and paint finish provide good antimoisture performance. ELV-181 features light weight, good internal damping, and strong anti-resonance ability. The bottom of the enclosure is equipped with four rubber feet to prevent the vibration and displacement of the speaker due to the high dynamic range. The sound quality of indoor subwoofers is characterized by good explosive power and elasticity. When used together with full-range speakers, indoor subwoofers can reflect the width of the sound field. Indoor subwoofers and outdoor subwoofers differ greatly in sound quality, and outdoor subwoofers have higher requirements for low-frequency strength and radiation distance.

• The speaker uses high-quality aerospace magnets to ensure that the magnetic circuit has higher magnetic flux density. The heatresistant voice coil can withstand high power, and when it is under high power or working for a long time, its performance is still stable after the temperature rises, and it is not easy to burn. The surface of the paper cone is coated with a special glue to enhance the rigidity of the paper cone and make it moisture-proof. The reasonable selection of elastic wave and cloth edge provides the speaker's vibration system with good elasticity, which can reduce distortion and allow the speaker to have a good transient response.