Compact speaker assembly with improved low frequency response
First Claim
1. A speaker transducer assembly comprising:
- (A) a magnet system having a circular air gap;
(B) a cylindrical voice coil form having a first section hereof extending into said air gap and a second section disposed outside said air gap;
(C) a voice coil wound circumferentially onto said first section of said voice coil form;
(D) first and second speaker diaphragms;
(E) frame means supporting said first and second speaker diaphragms in over and under juxtaposition and coaxially aligned with one another and with said cylindrical form;
(F) said first speaker diaphragm having an outer periphery and a central opening defining an inner periphery, said inner periphery of said first speaker diaphragm being attached to said second section of said cylindrical voice coil form for coaxial movement therewith;
(G) said second speaker diaphragm having an outer periphery and a central opening defining an inner periphery, said inner periphery of said second speaker diaphragm being attached to said second section of said cylindrical voice coil form for coaxial movement therewith and in unison with said inner periphery of said first speaker diaphragm; and
(H) an intermediate baffle coaxially positioned between said first and second speaker diaphragms, said intermediate baffle having an outer periphery rigidly supported by said frame and a central opening defining an inner periphery terminating in such a manner that the inner periphery of said baffle is slightly spaced from said second section of said cylindrical voice coil form.
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Accused Products
Abstract
A speaker transducer assembly is disclosed which includes first and second speaker diaphragms supported on a frame in over and under juxtaposition. Each of the speaker diaphragms has a central opening defining an inner periphery which is attached to a voice coil form for coaxial movement therewith and in unison. An intermediate baffle is coaxially positioned between the speaker diaphragms to define upper and lower, separately vented chambers. The upper chamber is vented through an outlet in the region of the outer peripheries of the first speaker diaphragm and the intermediate baffle; similarly, the lower chamber is vented through an outlet situated in the region of the outer peripheries of the second speaker diaphragm and the intermediate baffle. Preferably, the two vent systems have different vent exhaust areas to obtain stagger tuning and thus achieve a split of the deepest frequency load. A supplementary speaker subsystem for handling the higher frequencies is positioned centrally above the upper speaker diaphragm. An aperture is provided through the magnet system for accommodating the speaker leads to the supplementary speaker subsystem. An outwardly flared upper baffle may be positioned between the first speaker diaphragm and the supplementary speaker subsystem to shield its lower face from the sound pressure waves generated by the first speaker diaphragm.
76 Citations
10 Claims
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1. A speaker transducer assembly comprising:
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(A) a magnet system having a circular air gap; (B) a cylindrical voice coil form having a first section hereof extending into said air gap and a second section disposed outside said air gap; (C) a voice coil wound circumferentially onto said first section of said voice coil form; (D) first and second speaker diaphragms; (E) frame means supporting said first and second speaker diaphragms in over and under juxtaposition and coaxially aligned with one another and with said cylindrical form; (F) said first speaker diaphragm having an outer periphery and a central opening defining an inner periphery, said inner periphery of said first speaker diaphragm being attached to said second section of said cylindrical voice coil form for coaxial movement therewith; (G) said second speaker diaphragm having an outer periphery and a central opening defining an inner periphery, said inner periphery of said second speaker diaphragm being attached to said second section of said cylindrical voice coil form for coaxial movement therewith and in unison with said inner periphery of said first speaker diaphragm; and (H) an intermediate baffle coaxially positioned between said first and second speaker diaphragms, said intermediate baffle having an outer periphery rigidly supported by said frame and a central opening defining an inner periphery terminating in such a manner that the inner periphery of said baffle is slightly spaced from said second section of said cylindrical voice coil form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification