GB1385942A - Loudspeaker assemblies - Google Patents
Loudspeaker assembliesInfo
- Publication number
- GB1385942A GB1385942A GB1507772A GB1507772A GB1385942A GB 1385942 A GB1385942 A GB 1385942A GB 1507772 A GB1507772 A GB 1507772A GB 1507772 A GB1507772 A GB 1507772A GB 1385942 A GB1385942 A GB 1385942A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cabinet
- loudspeakers
- baffle
- angle
- full range
- 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
Links
- 230000000712 assembly Effects 0.000 title abstract 2
- 238000000429 assembly Methods 0.000 title abstract 2
- 230000005855 radiation Effects 0.000 abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000001413 cellular effect Effects 0.000 abstract 1
- 239000011093 chipboard Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- -1 polypropylene Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
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
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
-
- 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
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
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)
Abstract
1385942 Loudspeaker STANDARD TELEPHONES & CABLES Ltd 30 March 1972 15077/72 Headings H4J and H4X A loudspeaker assembly comprises three full range baffle-mounted loudspeakers located with their centres of radiation at the corners of a triangle and mounted to be inclined relative to one another so that the front radiation axes of the respective loudspeakers converge. The triangle may be equilateral. "Full range" loudspeakers reproduce frequencies from at lesat 1,000 Hz. to 10,000 Hz. As described, a chipboard cabinet (Fig. 1) has baffle faces 7, 9 at an angle 11 of about 130 degrees and baffle faces 8, 10 at an angle 12 of about 124 degrees. Full range loudspeakers of miameter 5 inches are located at apertures 13, 14, 15, 16. The loudspeakers may be in a common chamber in the cabinet or in separate chambers. Absorbent bonded acetate fibre is in the or each chamber. If desired, a "tweeter" (not shown) may be centrally located. The cabinet is preferably sealed, apart from a breather hole. Alternatively it may be open backed. In use the assembly may be horizontal (as shown), vertical or at an angle. Two such assemblies may be used in sterophonic reproduction. Other cabinet constructions have a smoothly concave baffle face and may be part-spherical. Cabinet and/or baffle may be of plastics material such as cellular polypropylene. The front may be covered with flat mesh giving the cabinet a flat front appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507772A GB1385942A (en) | 1972-03-30 | 1972-03-30 | Loudspeaker assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507772A GB1385942A (en) | 1972-03-30 | 1972-03-30 | Loudspeaker assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1385942A true GB1385942A (en) | 1975-03-05 |
Family
ID=10052611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1507772A Expired GB1385942A (en) | 1972-03-30 | 1972-03-30 | Loudspeaker assemblies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1385942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2466930A1 (en) * | 1979-10-04 | 1981-04-10 | Naoyuki Murakami | LOUD SPEAKER |
-
1972
- 1972-03-30 GB GB1507772A patent/GB1385942A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2466930A1 (en) * | 1979-10-04 | 1981-04-10 | Naoyuki Murakami | LOUD SPEAKER |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |