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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an
embodiment of the present invention. FIG. 2 is a horizontal cross-sectional view of the
embodiment of the present invention shown in FIG. 1
Separators , ?, 8, 9 и и и и и и и и и и и и space.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker
system suitable for bass range reproduction. A closed speaker cabinet (hereinafter simply
referred to as a cabinet) is designed to prevent the sound wave from the back of the speaker
from interfering with the sound wave from the front of the speaker, but it is actually a vibration.
The air in the closed box is compressed and expanded by the vibration of the plate, and the force
to push the diaphragm back to the stationary state 114 acts to distort the diaphragm, thereby
raising the bass reproduction limit of the speaker. Also, in the back open type cavity-39-2 /-'22
? ? ? net, the baffle plate is not infinite, so the sound wave from the back of the speaker
matches the sound wave from the front of the speaker and interferes with each other It can not
be null. The present invention is a speaker system that aims to minimize the influence of sound
waves from the back of the speaker on the sound waves from the front of the speaker. The
embodiment of the invention which will now be described with reference to the drawings is an
embodiment of the invention which, as shown in FIGS. 1 and 2, comprises a large number of nonlinear holes, gaps in the back of the baffle plate 2 with the loudspeaker 1. The cap-like casings 3
and 4.5 of different sizes, which are made of a breathable non-elastic material, etc., are fixedly
spaced apart from each other with the back of the speaker l. Incidentally, 6 is a separator for
holding the space between the respective housings 3, 4 and 5 and 7, 8 and 9 are a speaker 1 and
a housing 3 respectively. If a speaker system having such a configuration, which is a space
between the housing 3 and the housing 4 and the lit body 4 and the housing 5 is manufactured
by me, the sound pressure energy 3jj energy radiated from the diaphragm back direction of the
speaker l It is propagated to 7 and opened to the case 3. In the case of the porous body iit is a
part of the high frequency range component of the sound pressure energy which is absorbed in
the passage of the porous air iridescent non-elastic inelastic material and the sound pressure
energy attenuated in the next space 8 is dispersed . Thus, sound pressure energy $ 1! ?????
?????? 7.5 ?, ?, 77 ? ? ? ? ? ? ?. As described above, according to the present
invention, the distortion of the diaphragm caused by the closed casing is eliminated and the
sound wave from the back of the speaker and the sound wave from the front of the speaker due
to the open back case are not interfered with each other. The low frequency reproduction limit of
the speaker can be re-dusted. In addition, by making the sound pressure absorbing performance
of the air-permeable inelastic body constituting the housing appropriate, it is possible to reduce
the size of the speaker system.
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