Speaker and sound box

The utility model discloses a speaker and sound box, including magnet with install in the T iron of magnet, T iron ladle draws together magnetic conduction board and iron core, the iron core install in the upper surface of magnetic conduction board, the edge has been seted up to the lower surface of magnetic conduction board the axial of iron core will the through -hole that the iron core runs through, install passive radiator in the through -hole. The utility model discloses technical scheme promotes the air current and passes through through -hole flow direction passive radiator through installing passive radiator in the iron core during vibrating structure vibration, arouse passive radiator's resonance and sound production to improve the low -frequency effects of speaker. 本实用新型公开种扬声器及音箱，包括磁铁和安装于所述磁铁的T铁，所述T铁包括导磁板和铁芯，所述铁芯安装于所述导磁板的上表面，所述导磁板的下表面开设有沿所述铁芯的轴向将所述铁芯贯穿的通孔，所述通孔中安装有无源辐射器。本实用新型技术方案通过将无源辐射器安装在铁芯中，振动结构振动时推动气流通过通孔流向无源辐射器，引起无源辐射器的共振而发声，以改善扬声器的低频效果。