Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent
1997-05-09
2000-08-29
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
381397, 381398, 381400, 381403, 381404, 381405, 381407, H04R 714
Patent
active
061119695
ABSTRACT:
A broad band loudspeaker (101) includes a diaphragm (103) driven by coil assembly (125) centered on a pole (131) of a magnet assembly (133) by a low-friction guide (127) depending from a lower end the coil assembly, and a low-friction guide mounted on an upper end of the pole (131). A suspension (107) for the diaphragm (103) includes two or more parallel, resilient suspension members (115a, 115b), extending between the diaphragm (103) and frame (105) and mounted through a pair of resilient mounting pads (119a, 119b, 125a, 125b). The lower guide (127) includes a flexible portion (151a) which acts like a flapper valve of a pump to create a current of cooling air past down the inside of the coil assembly (125), up the outside of the coil assembly and then out of flux gap (130). Cooling fins (167) mounted on an upper side of the magnet assembly (133) promote transfer of heat to the inside of enclosure (121) and are arranged for the current of air from the flux gap to flow past the fins and into an enclosure (121).
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Dabney Phylesha L.
Hubbard Marc A.
Kuntz Curtis A.
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