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JPS61135295

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DESCRIPTION JPS61135295
[0001]
FIELD OF THE INVENTION The present invention relates to a speaker device incorporating a
power amplifier. 2. Description of the Related Art In recent years, many speaker devices have
been incorporated with a power amplifier and an equalizer in order to miniaturize the speaker
devices and to improve their performance. In a narrow room, in particular, there are many
restrictions on where to install the speaker device, and therefore, a thin and wall-mountable
speaker device is required. Hereinafter, with reference to the drawings, a thin-walled wall mount
incorporating the above-described conventional power amplifier will be described as a
corresponding speaker device. FIG. 4 is a cross-sectional view of a corresponding speaker
apparatus in which a wall mount incorporating a conventional power amplifier is provided. In
FIG. 4, 1 is a speaker cabinet, 2 is a speaker unit y), 3 is an input terminal, 4 is a power amplifier,
and 6 is an equalizer for improving low frequency characteristics. The operation of the
loudspeaker apparatus configured as described above will be described below. First, the signal
applied to the input terminal 3 is equalized by the equalizer 5. Next, the signal is amplified by the
power amplifier 4 and applied to the speaker unit 2 to obtain the frequency characteristic of the
person in FIG. Here, FIG. 3 shows the frequency characteristic corrected by the equalizer 6. B is
the frequency characteristic of the single speaker unit 2 before being corrected by the equalizer
5. C is a frequency characteristic when the speaker apparatus with the frequency characteristic
of m is used by being hung on a wall. Problems to be Solved by the Invention However, in the
configuration as described above, the frequency characteristic becomes as shown in FIG. 3C
when it is used by being hung on the speaker device t-wall, so that the low frequency range is
blurred and the sound quality is deteriorated. I had a point. SUMMARY OF THE INVENTION In
view of the above-described problems, the present invention provides a speaker device which can
obtain the best sound quality even when it is hung on a wall. Means for Solving the Problems In
order to solve the above problems, the speaker device according to the present invention has an
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equalizer for correcting the frequency characteristics of the power amplifier and the speaker unit
and a switch for switching the frequency characteristics of the equalizer on the back of the
speaker cabinet. It is In the present invention, according to the above configuration, when the
speaker device is hung on a wall, the switch attached to the back of the speaker cabinet operates
to change the frequency characteristics of the equalizer, and the sound quality is excellent even
in the state of being hung on the wall Is obtained. Embodiment A speaker device according to an
embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a speaker apparatus according to an embodiment of the
present invention. In FIG. 1, 1 is a speaker cabinet, 2 is a speaker unit, 3 is an input terminal, and
4 is a power amplifier, which are the same as in the prior art. Reference numeral 5 denotes an
equalizer for switching frequency characteristics, which includes an equalizer 5a for performing
normal correction and an equalizer sb for performing correction in a state of being applied to a
wall. A switch 6 is for switching the equalizer 6 & and the equalizer 5 b. FIG. 2 is a block diagram.
The operation of the loudspeaker apparatus configured as described above will be described
below. The signal applied to the input terminal 3 is equalized by the equalizer 5 and then applied
to the power amplifier 4 and output to the speaker unit 2. The frequency characteristic of the
equalizer 5 at this time is the frequency characteristic of the equalizer 6b if the speaker device is
hung on the wall with the switch 6; otherwise it is the frequency characteristic of the equalizer
5a. As described above, according to the present embodiment, by providing the switch for
switching the frequency characteristic of the equalizer on the back of the speaker cabinet, the
best sound quality can be obtained even in the state where the speaker device is hung on the
wall. As described above, according to the present invention, the equalizer for correcting the
frequency characteristics of the power amplifier and the speaker unit and the switch for
switching the frequency characteristics of the equalizer are provided on the back of the speaker
cabinet, even under normal use conditions. In addition, the best sound quality can be obtained
even in the state of being hung on a wall.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a cross-sectional view of a speaker device according to an embodiment of the present
invention, FIG. 2 is a block diagram of FIG. 1, FIG. 3 is a frequency characteristic view, and FIG. 4
is a cross-sectional view of the speaker device in a conventional example.
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4 ииииии Power amplifier, 5 иииииии Equalizer, 6 ииииииииии Switch. Name of Agent Attorney Nakao Toshio
Other 1 person 4 ... View 1 Figure 5 ... Equalize-6 ... Switch Figure 2 Figure 3 Shoulder Liquid
Mosquito
07-05-2019
3
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