Electric-acoustic transducer and electric-acoustic transducer/housing assembly

An electric-acoustic transducer/housing assembly comprising:

• a housing having an interior;
• and
• an electric-acoustic transducer arranged within said housing, said electric-acoustic transducer including:
• a casing having an axis;
• a first vibratory plate extending in a direction transverse to the axis of said casing;
• a second vibratory plate extending in a direction transverse to the axis of said casing;
• an exciter extending in a direction transverse to the axis of said casing and disposed between said first and second vibratory plates, said exciter being operated to induce vibration of said first and second vibratory plates in response to respective electric signals, said exciter being associated with said first vibratory plate to define a first inner chamber between said exciter and said first vibratory plate, and said exciter being associated with said second vibratory plate to define a second inner chamber between said exciter and said second vibratory plate;
• and
• said casing including a first sound hole and a second sound hole, said first and second sound holes extending through said casing and communicated with said first and second inner chambers, respectively,
• a sound pipe extending outwardly from said casing and having an inner end communicated with said first sound hole and an outer end,
• said housing including a partition disposed to divide the interior of said housing into a first chamber and a second chamber separated from said first chamber, said electric-acoustic transducer being arranged within said first chamber,
• said outer end of said sound pipe being communicated with said second chamber.

An electric-acoustic transducer comprising:

• a casing having an axis;
• a first vibratory plate extending in a direction transverse to the axis of said casing;
• a second vibratory plate extending in a direction transverse to the axis of said casing;
• an exciter extending in a direction transverse to the axis of said casing and disposed between said first and second vibratory plates, said exciter being operated to induce vibration of said first and second vibratory plates in response to respective electric signals, said exciter being associated with said first vibratory plate to define a first inner chamber between said exciter and said first vibratory plate, and said exciter being associated with said second vibratory plate to define a second inner chamber between said exciter and said second vibratory plate;
• and
• said casing including a first sound hole and a second sound hole, said first and second sound holes extending through said casing and communicated with said first and second inner chambers, respectively,
• a sound pipe extending outwardly from said casing and having an inner end communicated with said first sound hole and an outer end.