... Sound Box, usb speaker,PA speaker, portable speaker,Speaker System, Active Speaker,Professional Speaker,bluetooth speaker,wireless speaker,vibration speaker,ipod ... speaker, iphone speaker,speaker stand,moblie speaker,speaker cabinet,karaoke speaker High OutputThis system has ... woofer Drive UnitBig Speaker, Big Base. This Speaker system has 4 Inch Sub-woofer. Wooden MadeWooden Made Sub ...