Audio transducer with high aspect ratio actuator

An audio transducer comprising:

• a frame;
• and
• a voice-coil at least partially disposed within the frame, the voice-coil including:
• a first substantially flat side,
• a second substantially flat side, and
• an actuator at least partially coupled to the frame, the actuator including:
• a first magnetic element disposed adjacent to the first substantially flat side of the voice-coil,
• a second magnetic element disposed adjacent to the first substantially flat side of the voice-coil,
• a third magnetic element disposed adjacent to the second substantially flat side of the voice-coil, wherein a first magnetic flux flows from the first magnetic element to the third magnetic element,
• a fourth magnetic element disposed adjacent to the second substantially flat side of the voice-coil, wherein a second magnetic flux flows from the fourth magnetic element to the second magnetic element,
• a first plate having the first magnetic element and the second magnetic element, the first plate having a first arm and a second arm extending from opposite ends thereof, and
• a second plate having the third magnetic element and the fourth magnetic element, the second plate having a third arm and a fourth arm extending from opposite ends thereof.

An actuator comprising:

• at least one voice-coil;
• a first magnetic element disposed adjacent to a first side of the at least one voice-coil;
• a second magnetic element disposed adjacent to the first side of the at least one voice-coil;
• a third magnetic element disposed adjacent to a second side of the at least one voice-coil;
• a fourth magnetic element disposed adjacent to the second side of the at least one voice-coil;
• a first flexural spring coupled to the at least one voice-coil;
• a second flexural spring coupled to the at least one voice-coil;
• a first plate having a first arm and a second arm extending therefrom in opposite directions, the first magnetic element and the second magnetic element being disposed on the first plate;
• and
• a second plate having a third arm and a fourth arm extending therefrom in opposite directions, the third magnetic element and the fourth magnetic element being disposed on the second plate.