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JPS58170192

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DESCRIPTION JPS58170192
[0001]
The present invention relates to a multi-way speaker system, and in particular, easily changes the
position of a speaker with high directivity in the middle and high frequencies, and switches the
bass reflex type and the closed type along with the change of the speaker position. It is intended
to obtain characteristics meeting conditions. In the conventional multi-way speaker system, as
shown in FIG. 1, the woofer 3, the squawker 4 and the tweeter 6 are simply arranged in a line
and fixedly mounted on the baffle plate 2 on the front of the speaker box 1. For this reason, when
the speaker box 1 is installed in the horizontal position as shown in FIG. 2 depending on the
space of the room, the installation position of the speaker box, etc., there is a problem that the
reproduction characteristics are impaired by the directivity of the squawker 4 or the tweeter 60.
There is also known a so-called bass reflex type speaker system in which a bass reflex port 6 is
provided on the baffle plate 2 as shown in FIGS. 1 and 2 to enhance the low frequency, but
depending on the installation location of the loudspeaker box Although there is a case where it is
desired to use as a closed type speaker system, there is a problem that such usage can not be
easily made. The present invention provides a speaker system that solves such conventional
problems. An embodiment of the present invention will be described below with reference to
FIGS. 3 and 4. In FIG. 3 and FIG. 4, 7 is a speaker box, 8 is a baffle plate on the front surface, 9 is
a woofer attached to a part thereof, and 1o is a sub baffle plate L11. 12? A squawker and a
tweeter attached to the bubousoil plate 10, 13, 14 are sealing indicators provided forwardly
projecting on the outer periphery of the sub baffle plate 1o, 15 is a bass reflex port provided on
the baffle plate 8, 16 is an axis 17 It is a pivotally mounted opening and closing part. The
opening / closing part 16 is always urged in a direction in which one end thereof is separated
from the bass reflex report 15. In the above configuration, when listening in a room of a normal
size, the sub baffle plate 10 may be rotated as shown in FIG. 3 to arrange the woofer 9, the
squawker 11, and the tweeter 12 in a vertical line. At this time, the opening and closing part 16
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1
is pivoted as shown in FIG. For this reason, it is possible to use it as a bass reflex type speaker
system similar to that of the speaker system of FIG. 1 at this time. On the other hand, when this
speaker system is used as a vehicle, etc., the speaker box 7 is installed sideways as shown in FIG.
4 also from the viewpoint of space also in order to stabilize the installation state of the speaker
box 7. There are many things.
In this case, since it is a relatively negative space in the listening room, it is desirable that the
directional power 4 and the tweeter 12 be as close to the center as possible, that is, closer to the
woofer, than the left and right spread. In addition, when listening in such a narrow space, stable
reproduction can be performed by suppressing the low range rather than enhancing the low
range more than necessary. Therefore, in this case, the subbuckle plate 1o is rotated 90 degrees
as shown in FIG. 4 so that the squawker 11 and the tweeter 12 approach the woofer 9 as much
as possible. At this time, since one sealing indicator 13 pushes one end of the opening / closing
part 16 outward, the tip of the sealing component 13 seals the bass reflex port 16 and the
system is switched to a speaker system / a closed speaker system. Thus, the reproduction
characteristic suitable for the vehicle interior is realized. In the above embodiment, the open /
close component 16 is rotated by the rotation of the sub baffle plate 1o, but a member provided
inside the speaker box is rotated together with the sub baffle plate 10 to close and close the bass
reflex port 15 You may As described above, according to the present invention, the sub baffle
plate is rotated to change the mounting position of the high directivity middle high-range spill
force and to seal the bass reflex port when the sub baffle plate is rotated by a predetermined
angle. Therefore, it is possible to very easily perform the change of the arrangement of the
Misopeka and the switching between the bass reflex type and the closed type according to the
installation conditions of the speaker box, and always realize the best reproduction
characteristics.
[0002]
Brief description of the drawings
[0003]
1 and 2 are front views of a conventional speaker system, and FIGS. 3 and 4 are front views of a
speaker system according to an embodiment of the present invention.
7 · · · e-· speaker box, 8e 11 · · 0 baffle plate, 9-----woofer, 10a * # 11 #-sub-baffle plate, 11 · · · · ·
Skooka, 12 ...- · ツ tweeter, 13 ° 14 · · · 10 sealing indicator, 15-@---No Surefu boat, 16 · · · · · · · · ·
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2
opening and closing parts.
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3
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