• ELV-181SUB uses one 18 inch 220 magnet high quality subwoofer with 100mm refractory voice coil and stiff cone. • Elegant contour, high sensitivity and rich powerful bass suits for indoor entertainment applications. • The cabinet uses 18mm plywood and its baffle uses 25mm plywood, with painting finish for anti-moisture • Designed with four rubber feet to prevent from moving in wide dynamic operation. • Powerful and elastic bass offers wide sound field when used with full range speaker cabinet. • The speaker uses high quality aerospace magnet to ensure high magnetic flux density. • Refractory voice coil keeps reliable performance under high power and long time operation, cone with special glue improves the stiffness and anti-moisture function, suitable surround ensures the elastic vibration and excellent transient response meanwhile reduces the distortion.