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.)
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.)
Telefunken Iberica SA
Original Assignee
Telefunken Radiotecnica Iberica SA
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 Telefunken Radiotecnica Iberica SAfiledCriticalTelefunken Radiotecnica Iberica SA
Priority to ES0034819UpriorityCriticalpatent/ES34819Y/en
Publication of ES34819UpublicationCriticalpatent/ES34819U/en
Application grantedgrantedCritical
Publication of ES34819YpublicationCriticalpatent/ES34819Y/en
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
Loudspeaker with amplified reproduction of the low frequencies thanks to the use of a radiating sound hole placed in addition to the hole of the loudspeaker in the otherwise closed box and which has an air path of approximately a half-wavelength of a low frequency of p. ex. about 100 Hz of the hole of the speaker (soon 1.60 m) characterized in that the speaker box has the shape of a hollow column, at one end of which is placed on the side or on the front side of the speaker and on the other At the end, there is an additional hole on the side or on the front face, between which there is no labyrinth, but essentially an extended path, and because the hollow column has a minimum cross section of about 600 cm2 and the additional hole, a section cross approximately equal (Figures 1 to 6). (Machine-translation by Google Translate, not legally binding)
ES0034819U1953-02-171953-02-17
Loudspeaker with amplified reproduction of low frequencies
ExpiredES34819Y
(en)
Device for the audible reproduction of conversation oscillations or other sounds by electro-magnetic inductance (Machine-translation by Google Translate, not legally binding)