IT1186931B - Concrete prodn. method - Google Patents
Concrete prodn. methodInfo
- Publication number
- IT1186931B IT1186931B IT12568/85A IT1256885A IT1186931B IT 1186931 B IT1186931 B IT 1186931B IT 12568/85 A IT12568/85 A IT 12568/85A IT 1256885 A IT1256885 A IT 1256885A IT 1186931 B IT1186931 B IT 1186931B
- Authority
- IT
- Italy
- Prior art keywords
- speakers
- horns
- rear face
- baffle case
- acoustical baffles
- Prior art date
Links
Abstract
A speaker device comprises a baffle case and a number of small speakers mounted in a vertical array in close proximity one to another in the baffle case. Each of the speakers includes a diaphragm having a front and rear face and a number of acoustical baffles for reveiving sound radiated from the rear face of a speaker. The number of the acoustical baffles is equal in number to the number of the speakers with one of the acoustical baffles associated with the rear face of each of the respective speakers. Each of the acoustical baffles includes an opening, and a number of small horns is equal to the number of the speakers such that one of the horns is associated with each of the speakers. Each of the horns has a throat connected to the opening of the one of the speakers with which the horn is associated. The number of horns vertically are stacked one on the other in the baffle case and joined at a common mouth in the baffle case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT12568/85A IT1186931B (en) | 1985-09-20 | 1985-09-20 | Concrete prodn. method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT12568/85A IT1186931B (en) | 1985-09-20 | 1985-09-20 | Concrete prodn. method |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8512568A0 IT8512568A0 (en) | 1985-09-20 |
IT1186931B true IT1186931B (en) | 1987-12-16 |
Family
ID=11141710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT12568/85A IT1186931B (en) | 1985-09-20 | 1985-09-20 | Concrete prodn. method |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1186931B (en) |
-
1985
- 1985-09-20 IT IT12568/85A patent/IT1186931B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8512568A0 (en) | 1985-09-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19940630 |