Powered slot subwoofer with 8″ driver, 100W internal amplifier. Sold each. The Slot Sub features a newly designed amplifier delivering efficient and reliable high-powered sound. The front firing port design allows for maximum air flow and helps reduce port noise, while allowing unprecedented deep bass extension. Includes advanced circuitry to eliminate the potential for grounding noise. The design boasts a premium two tone finish with beveled shape and a premium satin black paint. Front mounted slot port allows for cabinetry or flush wall mounting.