Multi-cavity multi-magnetic circuit loudspeaker

The utility model provides a multi-cavity multi-magnetic-circuit loudspeaker, which comprises a lower shell, the interior of the lower shell is divided into an outer cavity and an inner cavity through an isolation cover, a plurality of air deflectors are arranged at the bottom in the outer cavity, a heat dissipation fan is fixedly arranged on the outer side of the bottom of the lower shell, mounting seats are fixedly arranged on two sides of the isolation cover, and the air deflectors are arranged on the mounting seats. A long-strip magnet is fixedly mounted in the mounting base, and reinforcing magnetic blocks are arranged on the two sides in the outer cavity; the internal structure of the lower shell is improved, the lower shell is divided into the inner cavity and the outer cavity through the isolation cover, the top of the long-strip magnet is arranged in the inner cavity to generate a magnetic field and drive the voice coil to vibrate, the lower portion of the long-strip magnet is arranged in the outer c