Peavey Electronics Corporation

Timothy Bryan Tardo

Hartley D Peavey

The present invention is directed to methods and apparatus for dissipating heat in a voice coil of a loudspeaker, where at least one of: a bobbin having a substantially cylindrical shaped wall member is operable to support the voice coil, and the wall member includes at least one aperture operable to provide thermal communication from the voice coil through the wall member; and a heatsink is coupled to an outer surface of a bobbin and is in thermal communication with the voice coil.

Methods and apparatus for dissipating heat in a voice coil

A signal cable includes a first connector having at least one signal lead and a ground lead, and being operable to couple to a first mating connector of a first piece of electronic equipment; a second connector having at least one signal lead and a ground lead, and being operable to couple to a second mating connector of a second piece of electronic equipment; at least one signal wire and a ground wire electrically connecting the respective at least one signal leads and the respective ground leads of the first and second connectors; and at least one switch disposed with at least one of the first and second connectors, the at least one switch having selectable make/break contacts coupled between the ground lead and the ground wire of the at least one of the first and second connectors such that an electrical path between the ground leads of the first and second connectors may be selectively opened and closed.

Selectable make-brake ground connector, cable and/or system

A microphone has a diaphragm having a dome central portion being formed of laminate of a thin layer of synthetic resinous material and a thin wire mesh contacting the central portion. As surrounding attachment portion is provided so that the diaphragm is free to vibrate in a plane perpendicular to itself. An annular voice coil is attached to and circumscribes the central portion on the concave side of the diaphragm and a fixed permanent magnet is disposed within the voice coil. The magnet is formed of neodymium iron-boron and the voice coil has an internal diameter greater than its thickness and the thickness of the magnet is greater than the thickness of the voice coil. A method of forming the described microphone is also set forth.

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Collinsville, MS, United States of America

Timothy Bryan Tardo