Mitek Corporation

Daniel Frank Roemer

Chad Aarron Kautz

Brad Michael Diedrich

Jason A Planck

Richard S Roark

A speaker support system, adapted to prevent destructive resonance between a speaker and a speaker cabinet, comprising a vibration damper, a vibration transferer, and a connector. The speaker support prevents primary-mode resonance from building up to damaging levels in a speaker cabinet. The vibration damper damps sound vibrations that are passing from a speaker into a speaker cabinet. The vibration damper is tuned to not resonate at any resonant frequency of the speaker cabinet. The vibration transferer transfers sound vibrations from the vibration damper to a vibration sink, which is preferably a portion of the speaker cabinet that is remote from the vibration damper. Preferably, the vibration transferer comprises a metal rod. The connector fixedly connects the vibration transferer to the vibration sink. The vibration transferer is tuned to not resonate at any resonant frequency of the speaker cabinet.

Speaker support systems

An adjustable terminal is disclosed having a plurality of electrical contacts electrically coupled between a corresponding number of pair-wise electrically-coupled input terminals and output terminals. A plurality of mechanically coupled jumpers are operable to pair-wise jump the electrical contacts to reconfigure the adjustable terminal variously for bi-amplifier output, parallel output, and series output at said output terminals. A housing is disclosed having support for the electrical contacts and for the jumpers, as well as labels for inputs, outputs, and current configuration. The jumpers may be mounted to a slider card that is movable between three positions to provide terminal reconfiguration.

Adjustable terminal block

A square speaker is disclosed having a novel surround with a novel rounded corner design and with a magnet assembly and former sized, shaped, and arranged to exploit the increased excursions enabled by the novel surround. The arcuate portion of the rounded corner features smoothed trapezoidal circumferential undulations of the radially outer portion and an extension pad forms the arcuate portion of the radially inner portion of the rounded corner. An apex groove separates the inner portion from the outer portion. Tapered protrusions of the outer portion flank the smoothed trapezoidal circumferential undulations. The rounded corner is bounded by edges making angles of between 20 degrees and 40 degrees (preferably about 35 degrees) with straight sides of the square surround. Most of the outer perimeter of the entire inner flange adjoins the inner portions of the rounded corners. Significant increases in volume displacement per speaker size are achieved.

Square speaker

A rebuildable low frequency loudspeaker driver has a replaceable diaphragm assembly. In a first embodiment, the peripheral edge of a loudspeaker driver diaphragm comprises a flexible surround and is releaseably supported within a matching basket having a peripheral mounting flange clamping surface to which a rigid ring-shaped clamping member or gasket is releaseably attached. A parts kit includes a replacement cone assembly with a frustoconical cone having an attached annular surround at the large cone end and a flexible spider attached near the small cone end, adjacent the attachment point for the cylindrical voice coil former. The spider includes a rigid ring mounted at the spider peripheral edge and dimensioned to be removably fastened to the driver basket. The driver basket includes a spider plateau region including a valley with sidewalls adapted to receive and center the spider rigid ring. The rebuilding method includes the steps of removing the expended cone assembly, cleaning the magnetic gap (if necessary) aligning the replacement cone assembly voice coil former over the motor pole piece, fastening the spider ring, removing the spacer paper alignment tool, and gluing a new dust cover over the center of the cone.

Field rebuildable low frequency loudspeaker driver having a removable diaphragm assembly, parts kit and method for rebuilding a loudspeaker driver in the field

Growing community of inventors

Oregon, WI, United States of America

Daniel Frank Roemer