PLATE-LIKE ACTIVE SPEAKER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a plate-like active speaker system which can be made thinner by effectively distributing arrangement space of each parts such as an electric circuit for controlling a driving actuator or the like. SOLUTION: A voice coil part 116 for an actuator unit 114 is fixed as a central part of a diaphragm 112 and is given vibration by operation of the actuator unit 114. A print wiring pattern is formed on the diaphragm 112 and a circuit part 130 is mounted at a peripheral part 112A of the diaphragm 112 by being vertically distributed. Each circuit parts 130 is an electric circuit including a power amplifier and its peripheral circuit for controlling the actuator unit 114. Each circuit parts 130 operates as a weight of the diaphragm 112 and has a function to improve low-frequency characteristics of a speaker. A speaker part is attained to be thinner by distributedly arranging the each circuit parts 130 on the diaphragm 112.