Patent ID: 8520885

Claim:
A composite speaker comprising a first diaphragm having a surface area, a second diaphragm having a smaller surface area than the first diaphragm, a first voice coil that drives the first diaphragm, and a second voice coil that drives the second diaphragm, wherein a first space that is open at least toward the rear is formed in a main yoke formed of a magnetic material, a ring-shaped first magnet is anchored to the interior of the first space, a first magnetic gap is formed between the inner circumferential surface or the outer circumferential surface of the first magnet and the main yoke, and the first voice coil is positioned within the first magnetic gap; and a second space that is open at least toward the front is formed in a region surrounded by the first magnet of the main yoke, and the second voice coil and a second magnetic field emitter that drives the second voice coil are housed within the second space.