Speaker unit and speaker

A speaker unit comprising:

• a first diaphragm in a cone shape;
• a blade piece in a plate shape to which one end side of a second diaphragm is attached, the second diaphragm a sheet forming a rounded surface portion curved from the one end side to another end side;
• and
• a driver unit that drives the first diaphragm and the blade piece together, wherein
• in the first diaphragm, a small diameter side is connected to the driver unit,
• the blade piece is connected to the driver unit via a center cap attached to a tip end of a voice coil of the driver unit to protrude from the small diameter side to a large diameter side of the first diaphragm, and
• in the blade piece, a base end side is perpendicular to the center cap and curved in accordance with a curvature of the second diaphragm as being closer to a tip end side.

A speaker unit comprising:

• a first diaphragm in a cone shape;
• a blade piece in a plate shape to which one end side of a second diaphragm is attached, the second diaphragm a sheet forming a rounded surface portion curved from the one end side to another end side;
• and
• a driver unit that drives the first diaphragm and the blade piece together, wherein
• in the first diaphragm, a small diameter side is connected to the driver unit,
• the blade piece is connected to the driver unit via a center cap attached to a tip end of a voice coil of the driver unit to protrude from the small diameter side to a large diameter side of the first diaphragm, and
• the blade piece is integral with the center cap.

A speaker unit, comprising:

• a first diaphragm in a cone shape;
• a second diaphragm formed as a sheet having a rounded surface portion curved from one end side to an opposite end side;
• a blade piece in a plate shape to which one end side of said second diaphragm is attached;
• a driver unit configured to drive the first diaphragm and the blade piece together and having a voice coil;
• and
• a center cap, wherein
• in the first diaphragm, a small diameter side is connected to the driver unit, and
• the blade piece is connected to the driver unit via the center cap attached to a tip end of the voice coil of the driver unit to protrude from the small diameter side to a large diameter side of the first diaphragm.