Universal ribbon element-module for two or more...

Details Universal ribbon element-module for two or more... Universal ribbon element-module for two or more...

2006-09-12

2006-09-12

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S399000, C381S176000, C381S431000, C381S116000, C381S117000

Reexamination Certificate

active

07106880

ABSTRACT:
A loudspeaker module in the form of a ribbon element, where the module can be equipped with a membrane, 50 millimeters in width or narrower, and with any length from 50 millimeters to 2500 millimeters. The magnet system is equipped with so called booster-magnets in order to reduce loss of magnetic flow in the soft iron pole pieces and in order to equalize and in order to even the magnetic flow at the magnet ends. The signal-feed is designed in the form of passive current-feeding, whereby the inductance's negative impact of the frequency response up to the 1/f point is eliminated. Above the 1/f point, the ribbon membrane is compensation fed from a separate circuit consisting of R and C, whose values have been chosen in such a way that the resulting frequency response is flat over the whole operating area.

REFERENCES:
patent: 4085299 (1978-04-01), Hobrough
patent: 4319096 (1982-03-01), Winey
patent: 5721784 (1998-02-01), Bernardo
patent: 0003491-8 (2002-03-01), None

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