| 摘要 |
PROBLEM TO BE SOLVED: To provide an amplifier which can discharge sounds outputted from a loudspeaker approximately to original sounds, can obtain instantaneous high-efficiency energy radiation by a simple circuit element, and is high in efficiency while taking loudspeaker characteristics into account; and to also provide a high-efficiency loudspeaker system in which the amplifier is integrated with a loudspeaker system including a radiation space load. SOLUTION: The present invention relates to a current drive type amplifier which inputs a sound source signal from an input terminal and drives a loudspeaker, including: the input terminal 12; an adder 14 connected to the input terminal 12; and an operational amplifier 16, connected to the adder 14, for setting mutual inductance infinite and converting an input signal IN into an output current (i). COPYRIGHT: (C)2011,JPO&INPIT
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