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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a cross section of a
conventional speaker cabinet, FIG. 2 is a side view showing a cross section of a speaker cabinet
according to the present invention, and FIG. The top view which made the partial cross section of
the speaker cabinet. Explanation of main symbols, 1 иии и и и и и и и и Speaker cabinet, 2 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 difference part 5, 6 и и и ииииииииииииииииииииииииии Speaker, 7
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Meshes, 11 иии 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 Sound absorption material.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker cabinet,
and more particularly to a speaker cabinet in which speakers are disposed stepwise in the front
and rear direction, and a sound non-reflection means is provided on the terrace surface of the
stepped portion. It is necessary to stagger the front and back positions of the woofer and tweeter
speakers in order to equalize the time to reach the observation point from each speaker of the
sound wave at the crossover frequency, but in such a speaker cabinet The sound wave from the
? и ? ?? force is reflected to the step difference part and backward S -1! The acoustic wave
directly interferes with the sound wave directly emitted from the ? ? force, and the acoustic
characteristics deteriorate. In order to cope with such inconveniences, as shown in FIG. 1, there is
one in which a sound absorbing material is provided on the terrace surface a of the stepped
portion, but such means have a defect that sufficient effect can not be achieved over a wide band.
The An object of the present invention is to form a sound absorbing chamber on a terrace surface
of a stepped portion and to fill the sound absorbing chamber with a sound absorbing material to
eliminate the above-mentioned defects. The invention will now be described with reference to the
embodiments shown in the drawings. The speaker cabinet 1 according to the present invention is
shown in FIG. 2, and the baffle 3 on the front of the cabinet body 2 is formed to be stepped in the
front-rear direction, and has two flat surfaces and one inclined stepped portion 40. It consists of
a terrace surface. Speakers 5 and 6 are attached to the two flat surfaces of the baffle 3, and the
positions of these two speakers are respectively shifted in the front-rear direction across the
terrace surface to be stepped. A sound absorbing chamber 7 is formed in a recessed manner over
the entire area of the terrace surface of the stepped portion 4, and the sound absorbing chamber
7 is filled with a sound absorbing material 8. Further, a mesh-like mesh 10 is provided in the
entire range of the opening 9 of the sound absorbing chamber 7. The wall material 11 of the
sound absorbing chamber is preferably made of continuous foam concrete, and in this case, the
outer surface is lined. Since the present invention is as described above, the sound wave emitted
from the speaker 5 or 3 and passed through the mesh 10 (see arrow S in FIG. 2) repeats
reflection in the sound absorption chamber 7 and passes through the mesh 10 again. Go out of
the cabinet body 2. As described above, according to the present invention, the sound absorbing
chamber 7 is recessed in the stepped portion 4 and the sound absorbing chamber 8 is filled with
the sound absorbing chamber 8. Since the sound is attenuated by the sound absorbing material
while being repeatedly reflected in the sound absorbing room, messie ?, 7 ?, yakaoi again.
?? I'm getting smaller. As a result, there is an effect that the acoustic characteristics are
significantly improved since the sound waves directly radiated from the speaker do not interfere
with each other.
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