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6975741 |
Electroacoustic transducer being acoustical tight in the area of its air gap for its moving coil
A transducer ( 1 ) includes a transducer axis ( 2 ), a membrane ( 3 ), a magnet system ( 6 ) having an outer magnet system part ( 7 ) and an inner magnet system part ( 8 ), a moving coil...
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5579398 |
Electro-acoustic transducer
This invention relates to electro-acoustic transducers such as is generally indicated at 10 and which comprise a body 11 defining a chamber 12, a plate 13 bearing a micro-phone or speaker 14 to...
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5537482 |
Magnetic, variable-volume sound producing device
A magnetic and variable-volume sound producing device which comprises a housing member, a substantially planar acoustic-producing diaphragm supported along its peripheral edge by the housing, a...
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4805221 |
Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
An installation of sound converters (e.g., speakers) in an enclosure having mechanical fasteners such that the transmission of solid-borne sound from the speakers to the enclosure is prevented.
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4518831 |
Transducer with translationally adjustable armature
An electromechanical magnetic transducer with a moving armature having (1) substantially pure translational adjustability, or (2) adjustability characterized by a substantially definite pre-chosen...
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4380689 |
Electroacoustic transducer for hearing aids
An electroacoustic transducer is disclosed which is small in size so as to allow its use in hearing aids or like structure, but which maintains the performance characteristics of larger...
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4345118 |
Quartz tuning fork electro-acoustic transducer
An acousto-electronic transducer includes an oscillator of quartz located in a sealed casing whose ceiling is constituted by a vibrant film, wherein the oscillator is connected to a pair of...
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4327257 |
Alignment device for electro-acoustical transducers
An electro-acoustical transducer has a voice coil assembly, a diaphragm coupled to the voice coil, a permanent magnet arrangement for providing a magnetic field in an air gap, and support means for...
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4239943 |
Adjustable dual spider for a loudspeaker
The present invention is an internal stabilizing spider-dust cap for use in combination with a loudspeaker that has an external centering spider and a surround mechanically coupling the conically...
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3484730 |
TUNABLE HIGH FREQUENCY ELECTRODYNAMIC DRIVER
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3436494 |
COMPLIANT ANNULUS FOR LOUDSPEAKER AND RELATED CIRCUIT
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3412219 |
Method of adjusting air gap in central armature receivers
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3334195 |
Magnetic speaker construction
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3002058 |
Electro acoustic transducer
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2798121 |
Electropneumatic loud-speaker
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RE09673 |
Title is not available
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0936503 |
Title is not available
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