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JPS5910092

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DESCRIPTION JPS5910092
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker system that can be used either in a bass reflex system or in a closed system. (Problems of
the Prior Art) FIG. 1 shows a conventional speaker / stem, 1 is a cabinet, 2 is a high sound
speaker, and 3 is a low frequency speaker. In general, the low frequency characteristics of the
speaker system are as shown by the solid line 7 in FIG. 2 in the closed type,... In the closed type
and the low frequency type, not only the difference in frequency characteristics but also the
difference in Q at the resonance frequency affects the preference of the sound, so it has been
seen in the prior art that it is possible to switch between the two. However, in the conventional
example, since the high frequency characteristic does not change, for example, it is difficult for
general users to obtain an optimal frequency balance, such as excessive bass when the bass
reflex is used. SUMMARY OF THE INVENTION The present invention provides a speaker system
that solves such problems. That is, an object of the present invention is to obtain an optimum
frequency balance in terms of hearing when switching to either a closed system or a bass reflex
system. (Structure of the Invention) The speaker / stem of the present invention is provided with
a bass reflex and a closed type switching device, whereby the characteristics of the low band can
be changed, and the high band operated in conjunction with the bass reflex and the sealed
switching device The characteristic switching device is configured to simultaneously change the
low frequency characteristic and the high frequency characteristic. (Embodiment) FIG. 3 shows
one embodiment of the present invention. The bass speaker 3 and the bass reflex-sealing
switching device 5 are removed. The bass reflex-sealing switching device 5 is switched to the
closed type by closing the opening of the bass reflex boat so as to switch to the bass reflex type
by opening the bass reflex port opening. A switch 6 for high-frequency characteristic switching
interlocked with the movement of the bass reflex-hermetic switching device 5 is provided, and
the level of the high-tone spill force output of the branching circuit 4 changes to Reno as shown
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in FIG. Be In FIG. 5, at the position a of the high frequency characteristic switching switch 6, the
high frequency sound output of the branching circuit 4 is attenuated and not attenuated at the
position. When the position of the switch 6 is aK when the switching device 5 is closed and the
sealing system is selected and the position of the switch 6 is b when the switching device 5 is
opened and the bass reflex system is selected, the frequency characteristics of the speaker / stem
In FIG. 4, in the closed system, the characteristic 7 shown by the solid line is obtained, and in the
bass reflex system, the characteristic 8 shown by the broken line is obtained.
(Effects of the Invention) As described above, by making it possible to switch the high-frequency
characteristic switching switch 7 in conjunction with the bass reflex-to-seal switching device, the
closed system as shown in FIG. In any of the bass reflex systems, an optimum frequency
characteristic with a sense of hearing "nival" / thus can be obtained.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a sectional view showing a conventional speaker / stem, FIG. 2 is a sound pressurefrequency characteristic diagram of a general closed type and bass reflex type speaker system,
and FIG. 3 is a speaker / stem according to the present invention no embodiment. 4 is a sound
pressure-frequency characteristic diagram of the speaker / stem shown in FIG.
FIG. 5 is a circuit diagram of a speaker / stem according to an embodiment of the present
invention. 1, ... cavity unsaturated cement, 2 ..... tweeter Suhika, 3 ...... woofer, 4-- diplexer, 5 .....
bass reflex - closed switching device, 6- и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
и и и и и и и и и и и и и и и и и и и и и и и и и и и и. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
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