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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of the
present invention, FIG. 2 is a sectional view of the embodiment, and FIG. 3 is a front view
showing another embodiment of the present invention, 4 is a cross-sectional view of the same
example. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · back cover.
【Detailed description of the invention】 Speaker box used for stereo cabinet etc., the contents
轍, the shape and the width of the speaker mounting plate of the Mit side, ie the baffle plate, the
outer shape of the cabinet raft (closed type, Besle I type, warmth The sound of the speaker is
affected by the shadow 1 with the form V-etc.) or the outline method, the material of the cabinet
and many other elements. Conventional cabinets often have a quadrilateral shape, but their
external dimensions, that is, their width, height, and depth ○ method, reflect at a frequency at
which the wavelength is exactly half of the wavelength, or at a multiple of that frequency. Sound
wave position (1) 2− 2- '(J SJ 6 phase perfectly matched, mutually strengthening the acoustic
energy,-creating a conspiracy state of standings, ie standing waves, the vibration of the speaker
cone is affected Produce a mountain valley in the characteristics. The present proposal attempts
to provide a speaker hook that reduces the generation of standing waves and reduces distortion
of the speaker sound. The first embodiment of the present invention will be described in the
following. In the first iii4, ill is a frame having a semicircular arched ceiling at the upper end of
both side walls. In the third case, (1) is a frame having upper ends of two side walls (two
paraboloids or other suitable curved curved large oh), which are formed of a single plate made of
wood or other suitable material. (2) is a baffle plate attached to the entire front surface of the
frame il +, in which holes (31, i41 are respectively bored in the receiving position of the speaker).
(5) is a bottom plate attached to the entire bottom surface of the frame (1), and (6) is the amount
of Jt bent and attached to the frame tll. (2) The present invention has a configuration of 叙 -E,
and since the ceiling portion is curved, the upper and lower portions do not become parallel, and
less standing waves are generated compared to the conventional square cabinet. In addition,
since the ratio of the width to the height of the baffle plate is always in compliance, the influence
on the vibration of the speaker cone is smaller than that of the conventional rectangular bubble
plate, and the peak and valley of the characteristic becomes smaller. Also, since the frame is
formed as a single plate, there are only two joints where there are only a few places that receive
large forces due to sound, and because the force of the curved surface is stronger than a flat
surface, the conventional method Because the cabinet is less distorted and distorted by sound
than a square cabinet, the cabinet vibrates and the distortion from the speakers is reduced. In
addition, since the ceiling of the cabinet is curved in an arch shape, a speaker box with a novel
design can be provided. .