Patent ID: 8891809

Claim:
A magnet structure of a loudspeaker, comprising: a core comprising a first core surface at a first end and a second core surface at a second end; a first magnet coupled to the first core surface; a second magnet coupled to the second core surface, where the first magnet and the second magnet are positioned so that a polarity of the first magnet is aligned in a same direction as a polarity of the second magnet, where the core has a height from the first end to the second end greater than a combined height of the first magnet and the second magnet, and where the core has an outer periphery including a central portion of reduced diameter between the first and second ends of the core extending over half of the height of the core; a magnet housing coupled to the first magnet; and a core cap coupled to the second magnet, where the magnet housing and the core cap are configured to form a voice coil gap radially outside the core cap in which a voice coil is positionable.