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TW231394B - Loudspeakers - Google Patents

Loudspeakers

Info

Publication number
TW231394B
TW231394B TW82107245A TW82107245A TW231394B TW 231394 B TW231394 B TW 231394B TW 82107245 A TW82107245 A TW 82107245A TW 82107245 A TW82107245 A TW 82107245A TW 231394 B TW231394 B TW 231394B
Authority
TW
Taiwan
Prior art keywords
tweeter
pipe
vent pipe
cabinet
rear wall
Prior art date
Application number
TW82107245A
Other languages
Chinese (zh)
Inventor
Whitehead Graham
Original Assignee
British Broadcasting Corp
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 British Broadcasting Corp filed Critical British Broadcasting Corp
Application granted granted Critical
Publication of TW231394B publication Critical patent/TW231394B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

A loudspeaker assembly comprises a cabinet having top, bottom and side walls, a rear wall and a front baffle. A tweeter (10) and woofer (12) are mounted on the front baffle and connected to a crossover and filter unit. A flared vent pipe (64) is mounted in a port (62) in the rear wall extending into the cabinet. The vent pipe is coaxial with the tweeter and spaced from the tweeter such that the air gap (68) between the pipe and tweeter behaves as if it were a part of the vent pipe, increasing the acoustic length of the pipe, improving the low-frequency response of the assembly and reducing port noise.
TW82107245A 1993-08-27 1993-09-04 Loudspeakers TW231394B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939317850A GB9317850D0 (en) 1993-08-27 1993-08-27 Loudspeakers

Publications (1)

Publication Number Publication Date
TW231394B true TW231394B (en) 1994-10-01

Family

ID=10741137

Family Applications (1)

Application Number Title Priority Date Filing Date
TW82107245A TW231394B (en) 1993-08-27 1993-09-04 Loudspeakers

Country Status (5)

Country Link
EP (1) EP0641142A1 (en)
JP (1) JPH07154885A (en)
CN (1) CN1108857A (en)
GB (2) GB9317850D0 (en)
TW (1) TW231394B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5696357A (en) * 1995-08-25 1997-12-09 Polk Investment Corporation Bass-reflex loudspeaker
TWI850860B (en) * 2022-11-18 2024-08-01 宏碁股份有限公司 Speaker module

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952159A (en) * 1973-03-09 1976-04-20 Zenith Radio Corporation Ducted port reflex enclosure
US4131179A (en) * 1976-12-17 1978-12-26 Pope Darrel L High fidelity speaker system
GB2049351B (en) * 1979-04-17 1984-01-11 Leggott Sa Loudspeaker unit
US4635748A (en) * 1986-02-18 1987-01-13 Paulson Rollie W Speaker cabinet having interactive speakers
JPH03267899A (en) * 1990-03-16 1991-11-28 Nec Home Electron Ltd Phase inversion type speaker
GB9207882D0 (en) * 1992-04-10 1992-05-27 Celestion Int Ltd Loudspeakers

Also Published As

Publication number Publication date
GB9412099D0 (en) 1994-08-03
CN1108857A (en) 1995-09-20
GB2281469A (en) 1995-03-01
GB2281469B (en) 1997-04-23
GB9317850D0 (en) 1993-10-13
JPH07154885A (en) 1995-06-16
EP0641142A1 (en) 1995-03-01

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