SPEAKER

PURPOSE: To smooth the flow of air at the rear of a diaphragm to improve the tone quality with respect to a speaker used in various acoustic apparatus. CONSTITUTION: A groove 1b which has 2mm or longer width and 0.5mm or longer depth toward the center is provided at least in one position on the oute...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YANO HIROSHI, SANO KOJI, KAGITANI SEISAKU
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:	PURPOSE: To smooth the flow of air at the rear of a diaphragm to improve the tone quality with respect to a speaker used in various acoustic apparatus. CONSTITUTION: A groove 1b which has 2mm or longer width and 0.5mm or longer depth toward the center is provided at least in one position on the outer peripheral face of a center pole 1a of a lower plate 1 constituting a magnetic circuit. Thus, the flow of air in a space part 10 on the rear side of a dust cap is smoothed to smoothly move the dust cap 9 and a diaphragm 7, and as the result, noise and distortion of the speaker are reduced to improve the tone quality of the speaker.