The Peavey® SP® 218P Sub is a vented powered subwoofer system utilizing two Peavey® exclusive Pro Rider™ 18" woofers, coupled to a power amplifier with 2,000 watts peak available power. The full-length black perforated steel grille provides protection and a professional appearance, along with the steel handles and tilt-back casters for transport. Internal line-level crossover with two outputs, independently electrically buffered; one full-range thru output, and one high-pass output. A threaded pole-mount system provides a sturdy and stable platform to mount a suitably equipped speaker system above the sub woofer. Either the SP®2P or the SP®4P two-way powered speakers are an excellent partner for the SP® 218P Sub.