Loudspeaker apparatus for electronic keyboard musical instrument
AssigneeKabushiki Kashia 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. A loudspeaker is mounted on the shelf board in alignment with a fringe of the sound emission opening. A speaker box is mounted on the shelf board so as to enclose the loudspeaker.
Claims7
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;
- a first loudspeaker mounted on said shelf board in alignment with said sound emission opening;
- and
- a speaker box mounted on said shelf board so as to fully enclose said first loudspeaker, wherein said loudspeaker apparatus includes said first loudspeaker responsive to lower acoustic frequencies and a second loudspeaker responsive to higher acoustic frequencies mounted on said shelf board outside and in close proximity to said speaker box.
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 both a sound emission opening and a port separate from said sound emission opening;
- a first loudspeaker mounted on said shelf board in alignment with said sound emission opening;
- a speaker box mounted on said shelf board so as to fully enclose both said first loudspeaker and said port,
- wherein said loudspeaker apparatus includes said first loudspeaker responsive to lower acoustic frequencies and a second loudspeaker responsive to higher acoustic frequencies mounted on said shelf board outside and in close proximity to said speaker box.
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 first sound emission opening;
- a first loudspeaker mounted on said shelf board in alignment with said first sound emission opening;
- and
- a speaker box mounted on said shelf board so as to enclose said first loudspeaker, said speaker box having a port,
- wherein said speaker box includes a second sound emission opening, and
- wherein said first loudspeaker is responsive to lower acoustic frequencies and wherein a second loudspeaker responsive to higher acoustic frequencies is internally mounted on a wall of said speaker box in alignment with said second sound emission opening.
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 first sound emission opening;
- a first loudspeaker mounted on said shelf board in alignment with said first sound emission opening;
- and
- a speaker box mounted on said shelf board so as to enclose said first loudspeaker, said speaker box having a port,
- wherein said first loudspeaker is responsive to lower acoustic frequencies, and
- wherein a second loudspeaker responsive to higher acoustic frequencies is mounted on said shelf board outside and in close proximity to said speaker box.
Dependencies are inferred from the claim text.