NL23790C - - Google Patents
Info
- Publication number
- NL23790C NL23790C NL23790DA NL23790C NL 23790 C NL23790 C NL 23790C NL 23790D A NL23790D A NL 23790DA NL 23790 C NL23790 C NL 23790C
- Authority
- NL
- Netherlands
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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/022—Cooling arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US127152A US1707544A (en) | 1926-08-04 | 1926-08-04 | Electrodynamic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL23790C true NL23790C (bs) |
Family
ID=22428569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL23790D NL23790C (bs) | 1926-08-04 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1707544A (bs) |
| DE (1) | DE527965C (bs) |
| FR (1) | FR636865A (bs) |
| GB (1) | GB275567A (bs) |
| NL (1) | NL23790C (bs) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE902015C (de) * | 1940-09-04 | 1954-01-18 | Klangfilm Gmbh | Druckkammerlautsprecher |
| US2463762A (en) * | 1941-11-14 | 1949-03-08 | Automatic Elect Lab | Electroacoustical transducer |
| US2485405A (en) * | 1944-04-21 | 1949-10-18 | Stromberg Carlson Co | Dipole microphone |
| DE911143C (de) * | 1951-11-25 | 1954-05-10 | Siemens Ag | Lautsprechersystem mit Druckkammer und einer Zwiebel fuer die Schallfuehrung |
| US2832844A (en) * | 1957-04-29 | 1958-04-29 | Univ Loudspeakers Inc | Speaker driver |
| JP3140895B2 (ja) * | 1993-10-08 | 2001-03-05 | パイオニア株式会社 | スピーカ装置 |
| US20240121558A1 (en) | 2022-05-09 | 2024-04-11 | B&C Speakers S.P.A. | Acoustic compression chamber with modally coupled annular diaphragm |
| US20240171914A1 (en) | 2022-11-18 | 2024-05-23 | B&C Speakers Na (Usa), Llc | Phase plug for compression driver |
-
0
- NL NL23790D patent/NL23790C/xx active
-
1926
- 1926-08-04 US US127152A patent/US1707544A/en not_active Expired - Lifetime
-
1927
- 1927-06-07 GB GB14918/27A patent/GB275567A/en not_active Expired
- 1927-06-11 DE DEE35798D patent/DE527965C/de not_active Expired
- 1927-06-30 FR FR636865D patent/FR636865A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB275567A (en) | 1928-01-19 |
| DE527965C (de) | 1931-06-24 |
| FR636865A (fr) | 1928-04-18 |
| US1707544A (en) | 1929-04-02 |