Speaker apparatus

A speaker apparatus comprising:

• a driving member and a vibrating plate which are coaxially disposed along a direction of driving a magnetic circuit;
• a frame including:
• a bottom plate portion holding the magnetic circuit;
• and a peripheral wall portion holding the vibrating plate and the driving member, wherein:
• the vibrating plate and the driving member are fixed to the peripheral wall portion of the frame at an outer peripheral portion thereof;
• an inner peripheral portion of the vibrating plate is bonded to the driving member, and an inner peripheral portion of the driving member is fixed to a voice coil bobbin;
• a space surrounded by the vibrating plate and the drive member and the frame is hermetically closed;
• a vibrating system is supported through the voice coil bobbin by a spring performance of a gas inside of the space;
• the bottom plate portion and the peripheral wall portion are connected by a plurality of connecting portions, each of which has a plate shape, arranged spirally;
• and
• the plurality of connecting portions are disposed so that interspaces between each of the plurality of connecting portions define openings
• the plurality of connecting portions are configured to flow air due to a vibration of the vibrating plate along the inclined face thereof.