The Citronic CUBA-18SA is a high output active subwoofer cabinet with internal amplifier. Each cabinet is constructed from 15mm MDF and coated in a durable textured polyurea material with a powder coated steel grille. Carrying handles are built into each side of the cabinet with a top mounted 35mm socket for pole mounting a top cabinet. A single high energy sub frequency driver is driven by a fixed DSP controlled class-D amplifier to develop high sound pressure output, accurately reproducing heavy dynamics and giving body to a full range system. Designed to match with higher output full range cabinets in the Citronic range or as part of any PA system that needs powerful and fast attacking sub content.