JPS6248897A - Speaker unit - Google Patents

Speaker unit

Info

Publication number
JPS6248897A
JPS6248897A JP18894685A JP18894685A JPS6248897A JP S6248897 A JPS6248897 A JP S6248897A JP 18894685 A JP18894685 A JP 18894685A JP 18894685 A JP18894685 A JP 18894685A JP S6248897 A JPS6248897 A JP S6248897A
Authority
JP
Japan
Prior art keywords
diameter
bleeders
difference
diaphragm
inside diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18894685A
Other languages
Japanese (ja)
Inventor
Akira Yoshikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18894685A priority Critical patent/JPS6248897A/en
Publication of JPS6248897A publication Critical patent/JPS6248897A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the lowering of sound pressure in a low band and the increasing of distortion even when the number of bleeders of a coupling cone are not prepared enough by reducing sufficiently a difference between the effective inside diameter of a ring-shaped diaphragm and the diameter of a voice coil.
CONSTITUTION: In a device, the difference between the effective inside diameter ϕD2 of a diaphragm 3 and the diameter ϕd of a voice coil 5 is minimized sufficiently. So that the volume shown in oblique lines is little fluctuated by the upward and downward movement of the diaphragm 3 by the minimization of the difference between the inside diameter ϕD2 and the diameter ϕd, the sound pressure in the low band area is not reduced and the distortion is not increased even when the small number of the bleeders provided at a coupling cone 4 is prepared. Also, the minimization of the number of the bleeders provided at the coupling cone 4 causes the reduction of the cost of the cone 4.
COPYRIGHT: (C)1987,JPO&Japio
JP18894685A 1985-08-28 1985-08-28 Speaker unit Pending JPS6248897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18894685A JPS6248897A (en) 1985-08-28 1985-08-28 Speaker unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18894685A JPS6248897A (en) 1985-08-28 1985-08-28 Speaker unit

Publications (1)

Publication Number Publication Date
JPS6248897A true JPS6248897A (en) 1987-03-03

Family

ID=16232678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18894685A Pending JPS6248897A (en) 1985-08-28 1985-08-28 Speaker unit

Country Status (1)

Country Link
JP (1) JPS6248897A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133099A (en) * 1982-02-02 1983-08-08 Matsushita Electric Ind Co Ltd Speaker
JPS5962299A (en) * 1982-10-01 1984-04-09 Matsushita Electric Ind Co Ltd Magnetic circuit for speaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133099A (en) * 1982-02-02 1983-08-08 Matsushita Electric Ind Co Ltd Speaker
JPS5962299A (en) * 1982-10-01 1984-04-09 Matsushita Electric Ind Co Ltd Magnetic circuit for speaker

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