GB327468A - Improvements in or relating to loud speakers and the like electro-acoustic devices - Google Patents
Improvements in or relating to loud speakers and the like electro-acoustic devicesInfo
- Publication number
- GB327468A GB327468A GB959/29A GB95929A GB327468A GB 327468 A GB327468 A GB 327468A GB 959/29 A GB959/29 A GB 959/29A GB 95929 A GB95929 A GB 95929A GB 327468 A GB327468 A GB 327468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequencies
- speakers
- electro
- relating
- shunt
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
- H04R3/14—Cross-over networks
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
327,468. Round, H. J. Jan. 10, 192Q. Systems for transmitting music. - Two large-- diaphragm type loud-speakers 6 and 8 are worked in parallel from the same supply, the input affecting high-frequency notes being suppressed in one of the speakers to produce uniform volume at all frequencies. The input transformer to the speaker 8 has its primary shunted by the eondenser 9 which tends to out down the output. of notes of frequencies of above 800 cycles. A shunt may be connected in series with the primary winding instead of using the condenser,. or the shunt and condenser may be used together. The cone of speaker 6 is strengthened with Bristol board or aluminium foil to increase the output at high frequencies. Specifications 248,433 and 294,285 are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB959/29A GB327468A (en) | 1929-01-10 | 1929-01-10 | Improvements in or relating to loud speakers and the like electro-acoustic devices |
| US418173A US1867177A (en) | 1929-01-10 | 1930-01-03 | Loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB959/29A GB327468A (en) | 1929-01-10 | 1929-01-10 | Improvements in or relating to loud speakers and the like electro-acoustic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB327468A true GB327468A (en) | 1930-04-10 |
Family
ID=9713500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB959/29A Expired GB327468A (en) | 1929-01-10 | 1929-01-10 | Improvements in or relating to loud speakers and the like electro-acoustic devices |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1867177A (en) |
| GB (1) | GB327468A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2539327A (en) * | 1947-07-23 | 1951-01-23 | Avco Mfg Corp | Cabinet for radio apparatus |
-
1929
- 1929-01-10 GB GB959/29A patent/GB327468A/en not_active Expired
-
1930
- 1930-01-03 US US418173A patent/US1867177A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1867177A (en) | 1932-07-12 |
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