Speaker unit and speaker curved diaphragm

A speaker unit, comprising:

• a first diaphragm in the form of a cone;
• a second diaphragm in the form of a sheet forming a curved vibration surface;
• and
• a driver unit driving the first diaphragm and the second diaphragm together, wherein
• the driver unit is connected to a small diameter side of the first diaphragm and one end side of the second diaphragm, and
• the second diaphragm is provided with means for applying a coating agent on a predetermined region or another region except the predetermined region, and has a plurality of regions of different resonance characteristics in which hardesses of vibration surfaces are changed in the middle of a length direction from the one end side toward another end side of the second diaphragm;
• and
• the predetermined region includes a boundary with the other region having a tapered shape in which a dimension in a width direction is reduced toward the other end side from the one end side of the second diaphragm.

A speaker unit, comprising:

• a first diaphragm in the form of a cone;
• a second diaphragm in the form of a sheet forming a curved vibration surface;
• and
• a driver unit driving the first diaphragm and the second diaphragm together, wherein
• the driver unit is connected to a small diameter side of the first diaphragm and one end side of the second diaphragm, and
• the second diaphragm is provided with means for applying a coating agent on a predetermined region or another region except the predetermined region, and has a plurality of regions of different resonance characteristics in which weights of vibration surfaces are changed in the middle of a length direction from the one end side toward another end side of the second diaphragm;
• and
• the predetermined region includes a boundary with the other region having a tapered shape in which a dimension in a width direction is reduced toward the other end side from the one end side of the second diaphragm.

A speaker unit, comprising:

• a first diaphragm in the form of a cone;
• a second diaphragm in the form of a sheet forming a curved vibration surface;
• and
• a driver unit driving the first diaphragm and the second diaphragm together, wherein
• the driver unit is connected to a small diameter side of the first diaphragm and one end side of the second diaphragm, and
• the second diaphragm is provided with means for applying a coating agent on a predetermined region or another region except the predetermined region, and has a plurality of regions of different resonance characteristics in which thickness of vibration surfaces are changed in the middle of a length direction from the one end side toward another end side of the second diaphragm;
• and
• the predetermined region includes a boundary with the other region having a tapered shape in which a dimension in a width direction is reduced toward the other end side from the one end side of the second diaphragm.

A speaker unit, comprising:

• a first diaphragm in the form of a cone;
• a second diaphragm in the form of a sheet forming a curved vibration surface;
• and
• a driver unit driving the first diaphragm and the second diaphragm together, wherein
• the driver unit is connected to a small diameter side of the first diaphragm and one end side of the second diaphragm, and
• the second diaphragm is provided with means for affixing sheet material on a predetermined region or another region except the predetermined region, and has a plurality of regions of different resonance characteristics in which hardnesses of vibration surfaces are changed in the middle of a length direction from the one end side toward another end side of the second diaphragm;
• and
• the predetermined region includes a boundary with the other region having a tapered shape in which a dimension in a width direction is reduced toward the other end side from the one end side of the second diaphragm.

A speaker unit, comprising:

• a first diaphragm in the form of a cone;
• a second diaphragm in the form of a sheet forming a curved vibration surface;
• and
• a driver unit driving the first diaphragm and the second diaphragm together, wherein
• the driver unit is connected to a small diameter side of the first diaphragm and one end side of the second diaphragm, and
• the second diaphragm is provided with means for affixing sheet material on a predetermined region or another region except the predetermined region, and has a plurality of regions of different resonance characteristics in which weights of vibration surfaces are changed in the middle of a length direction from the one end side toward another end side of the second diaphragm;
• and
• the predetermined region includes a boundary with the other region having a tapered shape in which a dimension in a width direction is reduced toward the other end side from the one end side of the second diaphragm.