The SUB-218BS subwoofer is a Bass Reflex cabinet that is able to support 1600W RMS and reproduce bass frequencies down to 24,5Hz. It is the ideal complement to any professional audio system in which a high sound pressure is required in that frequency range. It consists of two 18” loudspeakers with 4″ double sided voice coil and anti-humidity treatment on the cone. The polyurea based bi-component finish provides an attractive finish as well as extra protection against mechanical friction and impact