Patent Number: 6,167,140

Title: AV Amplifier

Abstract: When a first bi-wiring speaker is connected to output terminals 5A and 5B and a second bi-wiring speaker is connected to output terminals 5D and 5E, and further a two-channel stereo reproduction is performed, a signal 3L for a L channel outputted from a decoder 2 is amplified by amplifiers 4A and 4B in parallel to be given to the first bi-wiring speaker in a bi-wiring connecting manner and a signal 3R for a R channel outputted from the decoder 2 is amplified by amplifiers 4C and 4D in parallel and given to the second bi-wiring speaker in a bi-wiring connecting manner. At this time, a gain corrector 7 equalizes a gain which an output signal of the amplifier 4A has with respect to the signal 3L for the L channel with a gain which an output signal of the amplifier 4B has with respect to the signal 3L for the L channel. Similarly, a gain corrector 8 equalizes a gain which an output signal of the amplifier 4C has with respect to the signal 3R for the R channel with a gain which an output signal of the amplifier 4D has with respect to the signal 3R for the R channel.

Inventors: Watanabe; Atsuo (Hirakata, JP)

Assignee: Matsushita Electrical Industrial Co., Ltd.

International Classification: H04R 5/00 (20060101); H04R 5/04 (20060101); H04S 3/00 (20060101); H02B 001/00 (); H04R 005/00 ()

Expiration Date: 12/26/2017