GB1003608A - Improvements in or relating to diaphragms for loudspeakers - Google Patents

Improvements in or relating to diaphragms for loudspeakers

Info

Publication number
GB1003608A
GB1003608A GB30063A GB30063A GB1003608A GB 1003608 A GB1003608 A GB 1003608A GB 30063 A GB30063 A GB 30063A GB 30063 A GB30063 A GB 30063A GB 1003608 A GB1003608 A GB 1003608A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
rim
secured
driving system
conical
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
GB30063A
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of GB1003608A publication Critical patent/GB1003608A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/08—Arrangements for producing a reverberation or echo sound
    • G10K15/10—Arrangements for producing a reverberation or echo sound using time-delay networks comprising electromechanical or electro-acoustic devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound

Abstract

1,003,608. Diaphragms; reverberation systems. AKUSTISCHE UND KINO-GERATE G.m.b.H. Jan. 2, 1963 [Jan. 15, 1962], No. 300/63. Headings H4J and H4R. A loud-speaker diaphragm comprises a substantially flat plate of foamed material said plate being susceptible to the formation of flexural waves therein, whereby reverberation is added to sound produced by its vibration. The diaphragm 1 (Fig. 1) may be rectangular (50 cm. x 100 cm.) with a rim 2 of smaller thickness than the remainder. The rim 2 is gripped in a frame 4 and damping material 9 of soft felt, wadding or soft rubber reduces the formation of standing waves. The diaphragm 1 is actuated by a dynamic driving system 5 secured to a cross-bar. The voice coil 7 may be centred by the diaphragm itself, or by a single centring ring 10 (Fig. 3) or by two rings 10, 11. The driving system 5a (Fig. 4) may be offset from the centre and the diaphragm may be mounted at its rim in damping material and backed by damping means 14, 15. One or both sides of the diaphragm 1 (Fig. 4b) may be covered with aluminium foil or plastics sheet which acts as a mounting. The diaphragm may be covered with damping material on one or both sides. The rear face of the diaphragm may be conical (Fig. 5, not shown). Ribs may be formed on the diaphragm surface. A plurality of driving systems may act on a single diaphragm (Figs. 6, 8, not shown). The diaphragm 26 (Fig. 7) may be fitted in a cabinet and cater for middle and upper frequencies while bass frequencies are radiated by bass loud-speakers 27, 28. The diaphragm 33 (Fig. 9a) may take up the entire front face area of a transistor radio, the driving system 32 being secured to a cross-bar 35 or to a triangular board (Fig. 10, not shown). The diaphragm may have a conical extension 39 (Fig. 11) to which the voice coil is secured. A conical diaphragm of " Duralumin " or " Pertinax " (Registered Trade Marks) may have an outer foamed diaphragm 41 (Fig. 12) and a foamed plug 42. Specification 827,302 is referred to.
GB30063A 1962-01-15 1963-01-02 Improvements in or relating to diaphragms for loudspeakers Expired GB1003608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT29362A AT230453B (en) 1962-01-15 1962-01-15 Loudspeakers, in particular dynamic loudspeakers with a foam membrane

Publications (1)

Publication Number Publication Date
GB1003608A true GB1003608A (en) 1965-09-08

Family

ID=3486692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30063A Expired GB1003608A (en) 1962-01-15 1963-01-02 Improvements in or relating to diaphragms for loudspeakers

Country Status (6)

Country Link
AT (1) AT230453B (en)
BE (1) BE626876A (en)
CH (1) CH409018A (en)
GB (1) GB1003608A (en)
NL (2) NL142044B (en)
SE (1) SE328611B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464514A (en) * 1966-04-06 1969-09-02 Nippon Musical Instruments Mfg Loudspeaker
US4122314A (en) * 1976-12-23 1978-10-24 Sony Corporation Loudspeaker having a laminate diaphragm of three layers
US4232204A (en) * 1978-06-22 1980-11-04 Comercial E Industrial Sound-Tronic Ltd. High fidelity loudspeaker
DE3036030A1 (en) * 1979-09-25 1981-03-26 Victor Company Of Japan, Ltd., Yokohama, Kanagawa LOUDSPEAKER DIAPHRAGM ASSEMBLY AND PROCESS FOR THEIR MANUFACTURE
US4384174A (en) * 1979-10-02 1983-05-17 Victor Company Of Japan, Limited Moving voice coil loudspeaker, peripheral diaphragm support, diaphragm construction, bobbin to diaphragm reinforcement
EP0296139A2 (en) * 1987-06-18 1988-12-21 Highwood Audio Inc. Audio transducer
EP0924960A2 (en) * 1997-12-20 1999-06-23 NOKIA TECHNOLOGY GmbH Suspension for sound reproduction arrangements based on the bending wave principle
GB2360665A (en) * 1998-06-22 2001-09-26 Slab Technology Ltd Planar loudspeakers
EP1206897A2 (en) * 1999-07-23 2002-05-22 Digital Sonics, Llc Flat panel speaker
GB2463924A (en) * 2008-06-26 2010-04-07 Allan Read Wireless table-top conference system uses Balanced Mode loudspeaker
GB2544548A (en) * 2015-11-20 2017-05-24 Amina Tech Ltd Flat panel loudspeakers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603427A (en) * 1968-11-19 1971-09-07 Nippon Musical Instruments Mfg Loudspeaker

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464514A (en) * 1966-04-06 1969-09-02 Nippon Musical Instruments Mfg Loudspeaker
US4122314A (en) * 1976-12-23 1978-10-24 Sony Corporation Loudspeaker having a laminate diaphragm of three layers
US4232204A (en) * 1978-06-22 1980-11-04 Comercial E Industrial Sound-Tronic Ltd. High fidelity loudspeaker
DE3036030A1 (en) * 1979-09-25 1981-03-26 Victor Company Of Japan, Ltd., Yokohama, Kanagawa LOUDSPEAKER DIAPHRAGM ASSEMBLY AND PROCESS FOR THEIR MANUFACTURE
US4384174A (en) * 1979-10-02 1983-05-17 Victor Company Of Japan, Limited Moving voice coil loudspeaker, peripheral diaphragm support, diaphragm construction, bobbin to diaphragm reinforcement
EP0296139A2 (en) * 1987-06-18 1988-12-21 Highwood Audio Inc. Audio transducer
US4924504A (en) * 1987-06-18 1990-05-08 Highwood Audio Inc. Audio speaker
EP0296139A3 (en) * 1987-06-18 1991-03-27 Highwood Audio Inc. Audio transducer
EP0924960A2 (en) * 1997-12-20 1999-06-23 NOKIA TECHNOLOGY GmbH Suspension for sound reproduction arrangements based on the bending wave principle
EP0924960A3 (en) * 1997-12-20 2005-04-13 Harman Audio Electronic Systems GmbH Suspension for sound reproduction arrangements based on the bending wave principle
GB2360665A (en) * 1998-06-22 2001-09-26 Slab Technology Ltd Planar loudspeakers
GB2360665B (en) * 1998-06-22 2003-01-15 Slab Technology Ltd Loudspeakers
EP1206897A2 (en) * 1999-07-23 2002-05-22 Digital Sonics, Llc Flat panel speaker
GB2463924A (en) * 2008-06-26 2010-04-07 Allan Read Wireless table-top conference system uses Balanced Mode loudspeaker
GB2544548A (en) * 2015-11-20 2017-05-24 Amina Tech Ltd Flat panel loudspeakers
GB2544548B (en) * 2015-11-20 2018-01-24 Amina Tech Limited Flat panel loudspeakers

Also Published As

Publication number Publication date
CH409018A (en) 1966-03-15
SE328611B (en) 1970-09-21
AT230453B (en) 1963-12-10
BE626876A (en)
NL287574A (en)
NL142044B (en) 1974-04-16

Similar Documents

Publication Publication Date Title
GB1471297A (en) Electrodynamic type electroacoustic transducer
WO2001008447A3 (en) Flat panel speaker
GB1003608A (en) Improvements in or relating to diaphragms for loudspeakers
MX157986A (en) MULTIPLE IMPELLER SPEAKER IMPROVEMENTS
GB1289858A (en)
GB1516770A (en) Headphone cups incorporating audio transducers
JPS5660191A (en) Acoustic device for car
GB1270032A (en) Loudspeaker
US3718779A (en) Loudspeaker diaphragm having marginal air release passages and center high frequency propagator
GB961369A (en) Improvements in electro-acoustic transducer which is incorporated in a capsule and comprises a transistor amplifier particularly for telephone handsets
GB885501A (en) Improvements in or relating to loud speaker constructions
GB1369928A (en) Diaphragms for sound transducers
ES295062A1 (en) Electronic appliance
US3153463A (en) Compound loudspeaker diaphragm
GB851938A (en) Improvements in and relating to electro-acoustical transducers
GB1270033A (en) Louspeaker
CN204498348U (en) A kind of sound equipment
GB963853A (en) Loudspeakers
US4177872A (en) Speaker system
JPS5479621A (en) Multi-drive speaker
GB1248121A (en) Diaphragms for loudspeakers
GB1350122A (en) Sound reproducing equipment
GB1493296A (en) Loudspeaker assembly
CN212013046U (en) Portable wireless sound box of symmetry design
JPS5837195Y2 (en) electroacoustic transducer