Speaker box
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United States of America Patent
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Jun 7, 2016
Grant Date -
Jul 5, 2012
app pub date -
Dec 30, 2011
filing date -
Jan 4, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A speaker box includes a case includes an upper side and a lower side opposite to the upper side, an electroacoustic transducer received in the case and including a first pole plate with a plurality of first gaps for communicating with the magnetic gap, a second pole plate attached on a lower surface of the first pole plate. The second pole plate defines a second main member, a plurality of second auxiliary members extending from a periphery of the first main member, and a plurality of second gaps corresponding to the first gaps. Each of the second auxiliary members defines a longer auxiliary member and a shorter auxiliary member respectively.
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