[go: up one dir, main page]

JPS522721A - Method of manufacturing concrete-enclosure in back loading horn - Google Patents

Method of manufacturing concrete-enclosure in back loading horn

Info

Publication number
JPS522721A
JPS522721A JP7908275A JP7908275A JPS522721A JP S522721 A JPS522721 A JP S522721A JP 7908275 A JP7908275 A JP 7908275A JP 7908275 A JP7908275 A JP 7908275A JP S522721 A JPS522721 A JP S522721A
Authority
JP
Japan
Prior art keywords
enclosure
back loading
manufacturing concrete
loading horn
horn
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
JP7908275A
Other languages
Japanese (ja)
Inventor
Yusaku Imanari
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
Priority to JP7908275A priority Critical patent/JPS522721A/en
Publication of JPS522721A publication Critical patent/JPS522721A/en
Pending 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

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

Abstract

PURPOSE:To manufacture a speaker-enclosure having high precision of a back loading system with concrete.
JP7908275A 1975-06-24 1975-06-24 Method of manufacturing concrete-enclosure in back loading horn Pending JPS522721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7908275A JPS522721A (en) 1975-06-24 1975-06-24 Method of manufacturing concrete-enclosure in back loading horn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7908275A JPS522721A (en) 1975-06-24 1975-06-24 Method of manufacturing concrete-enclosure in back loading horn

Publications (1)

Publication Number Publication Date
JPS522721A true JPS522721A (en) 1977-01-10

Family

ID=13679957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7908275A Pending JPS522721A (en) 1975-06-24 1975-06-24 Method of manufacturing concrete-enclosure in back loading horn

Country Status (1)

Country Link
JP (1) JPS522721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170435A (en) * 1990-06-28 1992-12-08 Bose Corporation Waveguide electroacoustical transducing
RU2519852C1 (en) * 2012-11-30 2014-06-20 Алексей Юрьевич Химичев Acoustic horn and method of making same (versions)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170435A (en) * 1990-06-28 1992-12-08 Bose Corporation Waveguide electroacoustical transducing
RU2519852C1 (en) * 2012-11-30 2014-06-20 Алексей Юрьевич Химичев Acoustic horn and method of making same (versions)

Similar Documents

Publication Publication Date Title
JPS5259696A (en) Polu*dimethylaminomethyl methacrylate* resin and process for producing same
CA1034849A (en) Etching process for accurately making small holes in thick materials
JPS5243896A (en) Impacttresistant resin and process for producing same
JPS51142043A (en) Process for producing plastic granulars with additives
NL7609336A (en) FORGING METHOD WITH HIGH PRECISION AND FINE DETAILS.
JPS51146419A (en) Method of manufacturing glycidyl methacrylate
JPS522721A (en) Method of manufacturing concrete-enclosure in back loading horn
JPS5251321A (en) Process for manufacturing 44alkyllthiosemicarbazides
JPS524821A (en) Process for manufacturing composition for thermodevelopable photosensi tive material
RO71341A (en) PROCESS FOR PERFORING SEMIFABRICATES USED IN THE MANUFACTURE OF TEPS
JPS51121137A (en) Lithiummiodine battery and process for its production
JPS51120615A (en) Manufacturing method for comb-type electrodes
JPS5251322A (en) Process for manufacturing ssalkylphosphorodihalogenidedithioate
JPS5216956A (en) Self-bias type amplifier
GB1553914A (en) Prostaglandins and process for their manufacture
JPS51115792A (en) Manufacturing method of a machine vibrator
JPS5231032A (en) Process for manufacturing epoxyalkylphosphone acids
JPS51112425A (en) Method of manufacturing mold
JPS5263155A (en) Method of manufacturing mold
JPS5231419A (en) Producing method of molding material for automobile having adhesive fi lm of hot-melt type rust-proof
JPS51115424A (en) Process for manufacturing hydroxyalkyll phosphineoxide
HU171551B (en) Process for producing optically active n-cyclopropylmethyl-3-hydroxy-9-aza-morfinane and 3-hydroxy-9-aza-morfinane
JPS51135345A (en) A manufacturing process of taper waveguide
JPS525291A (en) Piezoelectric crystal oscillator production
IL50143A (en) Process for manufacturing chlorothianthrenes