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BRIEF DESCRIPTION OF THE DRAWINGS The drawing shows a longitudinal side view of a
loudspeaker cabinet which is retained in the present invention. Explanation of symbols of major
parts, 1 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 sound adjustment means, 4 и и и и и и different
baffles, 7, 8 ...... speaker, 9,10 ...... speaker mounting opening, 13, 14 ...... reproduced sound
radiating holes, 16a, 16b, 16ct18a, 18bt18c, 18d ииии и и Vibration-proof member.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker cabinet.
Although the speaker cabinet picks up due to the sound wave radiated from the back of the
speaker and the vibration of the speaker itself, the vibration of such cabinet emits a sound wave
that is undesirable for the reproduced sound emitted from the front of the speaker It is necessary
to have a means to absorb or block this. Therefore, it has been proposed that the auxiliary baffle
is disposed on the front of the cabinet and the space between the key and the auxiliary baffle is
sealed with a vibration-proof member or the like. However, the vibration of the cabinet is
transmitted to the auxiliary plate through the operation lot which is directly connected to the
speaker cabinet of the type which has an attenuator etc. and which is operated from the outside,
and the S directly connected to the attenuator etc. As a result, the sound absorption effect was
diminished and the result could not be achieved. For this reason, there has been proposed an
arrangement in which a special means is provided to connect the attenuator or the like to the
operation rod to suppress the propagation of the vibration as much as possible. However, since
the structure tends to be complicated, further measures are required. A speaker cabinet which
can suppress the vibration of the cabinet as much as possible without making a special means for
connecting the attenuator and the operation lot as much as possible in response to such a
request, and at the same time, can further improve the sound quality. Is the most preferable. The
present invention aims to provide such a speaker cavity. The present invention will now be
described with reference to the embodiments shown in the drawings. The drawing shows a
longitudinal side view of a loudspeaker cabinet having a pair of loudspeakers according to the
invention. The front face of the cabinet 1 (any one face selected is referred to as the front face
and the opposite face is the back face, and the front and back faces define the front and back of
the cabinet 1) It is formed in the step baffle 4 located above. On the terrace surface 2 formed by
shifting the front surface of the cabinet 1 back and forth, an acoustic adjustment means 3 such
as an anotene, a evening, etc. is provided. Loudspeaker mounting openings 9 and 10 are formed
in the upper and lower portions 5 and 6 of the step baffle 4 respectively, and each opening 9.
Speakers 7 and 8 are attached to the IO. Auxiliary baffles 11 and 12 are disposed on the front of
the upper portion 5 and the lower portion 6 of the step baffle 4 at predetermined intervals. The
auxiliary baffles 11 and 12 are provided with reproduction sound emission holes 13 and 14 on
the front face of the speaker attachment openings 9 and 10 respectively.
The top end of the upper auxiliary baffle 11 is bent inward and extends on the top surface 15 of
the key 10 at a predetermined distance and terminates at the rear end of the top surface 15. The
gap between the upper auxiliary baffle 11 and the upper portion 5 of the stepped baffle 4 is
sealed by the anti-vibration members 16a, 16b and 16C arranged in the vicinity of the upper
speaker mounting opening 9 and in the vicinity of the terrace surface 2 . The gap between the
portion extending on the top surface 15 of the auxiliary and full 11 and the top surface 15 is the
anti-vibration members 17a, 171 disposed at the side end and the front and rear ends of the top
surface 15 (l1ll end The vibration member is sealed by (not shown). A gap between the lower
auxiliary baffle 12 and the lower portion 6 of the stepped baffle 4 is the lower end of the
vibration damping members 18a, 181) and + SC and the stepped baffle 4 disposed in the vicinity
of the speaker mounting opening 10 and the terrace surface 2. It is sealed by the anti-vibration
member 18d arrange | positioned at. Although not shown, the anti-vibration members are also
disposed in the gaps between the upper and lower auxiliary baffles 11 and 12 and the side end
of the step baffle 4. As described above, the sound adjusting means 3 is provided on the terrace
surface 2. For example, when the sound adjusting means is an attenuator, an actuator is attached
to the back surface of the terrace surface 2 and an attenuator operating rod n connected thereto
is rotatably disposed through the terrace surface 2. In the above embodiments, the speaker
cabinet has only one set of speakers but is not limited thereto. It is needless to say that one or
more sets of speakers are provided at different positions in the vertical direction. In this case, a
terrace surface is formed by shifting at least the% s force 3 ?? of the other speakers in the back
and forth direction of the reproduced sound, and a sound adjusting means such as an attenuator
is provided on this terrace surface. Furthermore, although the auxiliary baffles are disposed only
on the front surface of the stepped baffle and the top surface 15 of the cabinet in the above
examples, the auxiliary baffles are not limited thereto but also on the side surfaces and the back
surface of the cabinet 1 at predetermined intervals. It is also 1 IT (Hp) to arrange the gap (not
shown) and to seal the gap formed by the side surface and the back surface and the auxiliary and
full with the vibration isolation member (not shown). As described above, according to the
present invention, two pairs of speakers are provided so that one is positioned above the other
and one behind the other 6 so that the sound quality is improved. Furthermore, since the sound
wave caused by the vibration of the cabinet is shielded by the auxiliary baffle and the vibration
isolation member, the interference of the sound wave with the reproduced sound is eliminated. .
In addition, since it is not necessary to consider the propagation of the cabinet vibration to the
auxiliary baffle via the above-mentioned means since the sound adjusting means or the auxiliary
baffle is disposed on the terrace surface where the auxiliary baffle is not disposed, There is no
need to apply. Not only that, because the area of the terrace surface is smaller than that of the
other cabinet surfaces, the vibration of its own can be neglected and thus has excellent effects.
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