Speaker

A speaker, comprising:

• a vibration diaphragm;
• a voice coil connected to the vibration diaphragm;
• a first magnet comprising an end adjacent to the voice coil and an opposite end distant from the voice coil, of which magnetic polarities are opposite to each other;
• and
• a second magnet comprising an end adjacent to the voice coil and an opposite end distant from the voice coil, of which magnetic polarities are opposite to each other;
• wherein the voice coil has an effective width that is greater than a magnetic gap between the first magnet and the second magnet, at least a portion of the voice coil is arranged to align with the gap between the first magnet and the second magnet;
• the ends of the first magnet and the second magnet that are adjacent to the voice coil are of opposite magnetic polarities;
• and
• the first magnet and the second magnet exhibit a height difference between end surfaces thereof on a same side, and at least a portion of the voice coil is located between the end surface of the first magnet and the end surface of the second magnet that exhibit the height difference.