Loudspeaker apparatus for electronic keyboard musical instrument
AssigneeKabushiki Kaisha Kawai Gakki Seisakusho
InventorKatsuhiko Torii
Life of this patent
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Abstract
A loudspeaker apparatus for an electronic keyboard musical instrument has a shelf board constituting a casing of the musical instrument. The shelf board has a sound emission opening and a first port. A loudspeaker is mounted on an upper side of the shelf board in alignment with a fringe of the sound emission opening. A first speaker box is mounted on the upper side of the shelf board so as to enclose the loudspeaker and the first port. A second speaker box is mounted on a lower side of the shelf board in fluid communication with the first speaker box via the first port. The second speaker box has a second port.
Claims9
A loudspeaker apparatus for an electronic keyboard musical instrument, said apparatus comprising:
- a shelf board constituting a casing of said musical instrument, said shelf board having a sound emission opening and a first port, said sound emission opening communicating with an environment external of said casing;
- a loudspeaker mounted on an upper side of said shelf board in alignment with a fringe of said sound emission opening;
- a first speaker box mounted on the upper side of said shelf board so as to enclose said loudspeaker and said first port, said first speaker box being completely enclosed by said casing;
- and
- a chamber mounted on a lower side of said shelf board in fluid flow communication with said first speaker box via said first port, said chamber having a second port, said second port communicating with the environment external of said casing.
A loudspeaker apparatus for an electronic keyboard musical instrument, said apparatus comprising:
- a shelf board constituting a casing of said musical instrument, said shelf board having a sound emission opening and a first port;
- a loudspeaker mounted on an upper side of said shelf board in alignment with a fringe of said sound emission opening;
- a first speaker box mounted on the upper side of said shelf board so as to enclose said loudspeaker and said first port;
- a chamber mounted on a lower side of said shelf board in fluid flow communication with said first speaker box via said first port, said chamber having a second port;
- and
- further comprising a speaker horn which is provided on the lower side of said shelf board in alignment with said sound emission opening and which is partly formed by utilizing a side plate of said chamber.
Dependencies are inferred from the claim text.