[go: up one dir, main page]

GB661887A - Improvements in or relating to mounting for loudspeakers - Google Patents

Improvements in or relating to mounting for loudspeakers

Info

Publication number
GB661887A
GB661887A GB2641748A GB2641748A GB661887A GB 661887 A GB661887 A GB 661887A GB 2641748 A GB2641748 A GB 2641748A GB 2641748 A GB2641748 A GB 2641748A GB 661887 A GB661887 A GB 661887A
Authority
GB
United Kingdom
Prior art keywords
loudspeakers
relating
mounting
oct
casing
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
GB2641748A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2641748A priority Critical patent/GB661887A/en
Publication of GB661887A publication Critical patent/GB661887A/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
    • H04R1/36—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 by using a single aperture of dimensions not greater than the shortest operating wavelength

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

661,887. Loud-speakers. STANDARD TELEPHONES & CABLES, Ltd., and CRAGG, W. D. Oct. 7, 1949 [Oct. 11, 1948], No. 26417/48. Class 40 (iv). A loudspeaker casing with a slotted front of the type described in Specification 659,063 is completely enclosed behind. The casing may have several shapes, with plane faces such as in Fig. 2, or of bowl shape, Fig. 5, a back-plate 4 in the latter case being removable.
GB2641748A 1948-10-11 1948-10-11 Improvements in or relating to mounting for loudspeakers Expired GB661887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2641748A GB661887A (en) 1948-10-11 1948-10-11 Improvements in or relating to mounting for loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2641748A GB661887A (en) 1948-10-11 1948-10-11 Improvements in or relating to mounting for loudspeakers

Publications (1)

Publication Number Publication Date
GB661887A true GB661887A (en) 1951-11-28

Family

ID=10243328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2641748A Expired GB661887A (en) 1948-10-11 1948-10-11 Improvements in or relating to mounting for loudspeakers

Country Status (1)

Country Link
GB (1) GB661887A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816619A (en) * 1951-12-04 1957-12-17 John E Karlson Acoustic transducers
GB2140653A (en) * 1983-04-20 1984-11-28 Tadashi Sawafuji A piezoelectric sound producer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816619A (en) * 1951-12-04 1957-12-17 John E Karlson Acoustic transducers
GB2140653A (en) * 1983-04-20 1984-11-28 Tadashi Sawafuji A piezoelectric sound producer

Similar Documents

Publication Publication Date Title
GB656732A (en) Improvements in or relating to loud speakers
GB1344370A (en) Loudspeaker cabinet
GB659063A (en) Improvements in or relating to loudspeakers
GB677225A (en) Improvements in or relating to electro-acoustic transducers
GB661887A (en) Improvements in or relating to mounting for loudspeakers
GB496504A (en) Improvements in loud speakers
GB757021A (en) Improvements in or relating to loudspeaker mountings
GB829214A (en) Improvements in loud speaker systems
GB978781A (en) Improvements in or relating to sound reproducing apparatus
GB894900A (en) Improvements in or relating to electronic apparatus incorporating electrostatic loudspeakers
GB641668A (en) Sound reproduction devices
GB1117810A (en) Improvements in telephone instruments
GB937872A (en) Improvements in or relating to loudspeaker mountings
GB754655A (en) Improvements in or relating to automatic telecommunication exchange equipment
GB912430A (en) Improvements in or relating to loud speakers
GB697135A (en) Portable loudspeaker case
GB734296A (en) Improvements in or relating to cabinets for moving-coil loudspeakers
GB638920A (en) Improvements in or relating to head-gear for electro-acoustic transducers
GB614638A (en) Improvements in and relating to loudspeaking telephone systems
GB970986A (en)
GB666408A (en) Improvements in or relating to electro-magnetic vibratory devices
GB626453A (en) Improvements in or relating to acoustic instruments
GB767308A (en) Improvements in or relating to loudspeaking telephone apparatus
CA491419A (en) Loud speaking telephone set
GB630719A (en) Improvements in or relating to loud speakers and like sound reproducing devices