High fidelity loudspeaker
AssigneeComercial e Industrial Sound-Tronic Ltd.
InventorHernan H. Rojas
Life of this patent
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Abstract
The loudspeaker includes a front panel of expanded polystyrene resiliently connected to side walls of the speaker enclosure. A standard loudspeaker is connected to the front panel, and there is a small diffuser cone concentric with the standard cone. The front panel is driven by the standard cone to reproduce low and medium frequencies and the diffuser cone reproduces high frequencies. Both speakers are driven by a common driver fixed to a rear panel or cross-beam of the enclosure.
Claims3
An acoustic box having side walls connected to a front panel through a resilient suspension, said front panel being made of expanded polystyrene and associated with a standard loudspeaker cone and a small diffuser cone which are concentric and are driven by a single common driving coil, said front panel operating as a low frequency reproducer, said standard cone operating as the panel driving means for the low frequency range and also as a reproducer for the medium frequencies, and the smaller diffuser operating as a high frequency reproducer, the whole arrangement conforming to an indivisible system and as an electro-acoustical transducer having a linear response in the audible range, and wherein the driving coil is embedded in a moulded plastic tube to prevent deformation, and said driving coil is permanently immersed in a magnetic field.
An acoustic box having side walls connected to a front panel through a resilient suspension, said front panel being made of expanded polystyrene and associated with a standard loudspeaker cone and a small diffuser cone which are concentric and are driven by a single common driving coil, said front panel operating as a low frequency reproducer, said standard cone operating as the panel driving means for the low frequency range and also as a reproducer for the medium frequencies and the small diffuser operating as a high frequency reproducer, the whole arrangement conforming to an indivisible system and as an electro-acoustical transducer having a linear response in the audible range, and wherein a driver magnet is directed connected to a cross-beam of the box, thus eliminating the conventional loudspeaker housing bell.
An acoustic box comprising a front panel made of a material of a high stiffness to mass ratio associated to a standard loudspeaker cone and a small diffuser cone which are concentric and are driven by a single common driving coil, said front panel operating as a low frequency reproducer, said standard cone operating as the panel driving means for the low frequency range and also as a reproducer for the medium frequencies and the small diffuser cone operating as a high frequency reproducer, the whole arrangement conforming to an indivisible system and as an electro-acoustical transducer having a linear response in the audible range, said front panel being connected to side walls of the box through a resilient suspension, and wherein the material of said front panel is expanded polystyrene.
Dependencies are inferred from the claim text.