18-inch dual subwoofer system offers superior power that makes huge difference and creates whole complete sound. Features such as black coated metal grill and corners for overall protection. These subwoofer systems are perfect for dance floor and other functions that require big and clear ultra-performance sound. Both have same excellent features like dual speakon input, ¼-inch input connectors. Wheels for easy transport when travelling from one gig to another and beautiful black carpet finish.