DYNAMIC LOUDSPEAKER AND ITS AUDIO AMPLIFIER CIRCUIT

PROBLEM TO BE SOLVED: To provide a dynamic loudspeaker whose frequency characteristic can be adjusted in response to its peripheral structure and mount structure or the like. SOLUTION: A voice coil 2 fitted to a base end of a cone type diaphragm 1 enclosed by a frame 9 is driven in a magnetic field...

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Bibliographische Detailangaben
Hauptverfasser:	IWASAKI HIROSHI, EBISU YOSHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a dynamic loudspeaker whose frequency characteristic can be adjusted in response to its peripheral structure and mount structure or the like. SOLUTION: A voice coil 2 fitted to a base end of a cone type diaphragm 1 enclosed by a frame 9 is driven in a magnetic field generated by a magnet 4 in response to an audio signal. A sub voice coil 10 is fitted to an outer circumference at a tip of the diaphragm 1 and a magnet 12 is provided at the frame 9 to provide a magnetic field to the sub voice coil 10. This sub voice coil is driven by an audio signal corresponding to the audio signal supplied to the voice coil 2.