GB1102036A - Acoustic system - Google Patents

Acoustic system

Info

Publication number
GB1102036A
GB1102036A GB31206/65A GB3120665A GB1102036A GB 1102036 A GB1102036 A GB 1102036A GB 31206/65 A GB31206/65 A GB 31206/65A GB 3120665 A GB3120665 A GB 3120665A GB 1102036 A GB1102036 A GB 1102036A
Authority
GB
United Kingdom
Prior art keywords
speakers
chamber
frontal
channel
chambers
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.)
Expired
Application number
GB31206/65A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1102036A publication Critical patent/GB1102036A/en
Expired legal-status Critical Current

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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H04R1/347—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers for obtaining a phase-shift between the front and back acoustic wave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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

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

Abstract

1,102,036. Stereophonic loud-speaker systems. F. H. MAGNUS. 22 July, 1965 [13 April, 1965], No. 31206/65. Headings H4J, H4R and H4X. A sterophonic loud-speaker system (Fig. 1A) comprises a central blending chamber 10 and two side chambers 11-1, 11-2. Bass speakers 15-1 and (15-2, Fig. 1B, not shown), one for each channel, are in opposite walls of the chamber 10. A mid-range speaker 20-1 and treble speakers 21-2, 22-2 for one channel together with mid-range speaker 20-2 and treble speakers 21-1, 22-1 for the other channel are provided in the front wall. Connections are made to the various speakers from a stereophonic amplifier via a two-channel cross-over network. Chambers 11-1 and 11-2 provide resonance for the bass speakers 15-1 and 15-2. Rearward propagation from the speakers is mixed in the chamber 10 and emerges through a frontal aperture 18. The system may be included in a cabinet 30, Figs. 2A, 2B, 2C (not shown), housing an amplifier 31 and a recordplayer 32. The front walls of the chambers 11-1 and 11-2 may include frontal apertures (35-1, 35-2) covered by grille cloth. A rack (37) at the rear of the cabinet may be used for record storage. In an alternative arrangement (Fig. 3A), three frontal apertures 50 are provided. Four mid- and high-range speakers 49 each having their rear diaphragms shielded by a metal frame are mounted on the outside of the rear wall of the central blending chamber, two at each end, to direct their acoustic energy into the chamber. Apertures 47-1, 47-2 are provided in partitions separating the central blending chamber and two side chambers 41-1 and 41-2. An aperture 44-1, 44-2 is provided in the frontal wall of each side chamber.
GB31206/65A 1965-04-13 1965-07-22 Acoustic system Expired GB1102036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US447825A US3268030A (en) 1965-04-13 1965-04-13 Acoustic system

Publications (1)

Publication Number Publication Date
GB1102036A true GB1102036A (en) 1968-02-07

Family

ID=23777904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31206/65A Expired GB1102036A (en) 1965-04-13 1965-07-22 Acoustic system

Country Status (2)

Country Link
US (1) US3268030A (en)
GB (1) GB1102036A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222745A (en) * 1988-09-13 1990-03-14 Colin George Purves Suppressed air-resonance loudspeaker enclosure

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486578A (en) * 1967-12-21 1969-12-30 Lawrence Albarino Electro-mechanical reproduction of sound
US3590942A (en) * 1969-12-15 1971-07-06 Scott Inc H H Omnidirectional loudspeaker system
US4237341A (en) * 1978-09-25 1980-12-02 Richards Paul E Portable self-contained amplifier and loudspeaker apparatus
GB9200301D0 (en) * 1992-01-08 1992-02-26 Thomson Consumer Electronics Loud speaker systems
DE4244397C2 (en) * 1992-12-29 1996-03-07 Waldemar Kehler Method and device for stereophonic reproduction and recording
DE19601217C1 (en) * 1996-01-15 1997-07-24 Mark Iv Audio Deutschland Gmbh Bass reflex box
US5991425A (en) * 1996-12-13 1999-11-23 Sony Corporation Low reflection/low diffraction treatment for loudspeaker transducer diaphragm
US8175304B1 (en) * 2008-02-12 2012-05-08 North Donald J Compact loudspeaker system
US9997081B2 (en) * 2013-09-20 2018-06-12 Bose Corporation Audio demonstration kit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075666B (en) * 1960-02-18 Siemens Electrogerate Aktiengestll schaft Berlin und München I aut speaker arrangement with practically spherical radiation characteristics
US2145318A (en) * 1936-07-14 1939-01-31 Telefunken Gmbh Loudspeaker arrangement
BE424804A (en) * 1936-11-25
GB932738A (en) * 1958-09-13 1963-07-31 Blaupunkt Werke Gmbh Improvements in or relating to sound reproduction apparatus
US3026957A (en) * 1959-06-02 1962-03-27 Gladstone Lewis Loudspeaker system
US3113633A (en) * 1960-11-04 1963-12-10 John F Eberhardt Stereophonic sound system
US3074503A (en) * 1961-01-19 1963-01-22 Jr Barry Cool Loud speaker enclosures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222745A (en) * 1988-09-13 1990-03-14 Colin George Purves Suppressed air-resonance loudspeaker enclosure
GB2222745B (en) * 1988-09-13 1993-05-05 Colin George Purves Suppressed air resonance loudspeaker enclosure

Also Published As

Publication number Publication date
US3268030A (en) 1966-08-23

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