Robert Boschgmbh

Mark Delay

Nolen Ryba

Andrew Pardoe

David Edward Carlson

David Carlson

A ported speaker assembly includes an outer enclosure having a front opening. An inner frame of the speaker assembly is positioned at least partially within the outer enclosure and has an outer perimeter edge proximate the front opening of the outer enclosure. A resonator chamber is defined between an interior of the outer enclosure and an exterior of the inner frame. At least one speaker driver is mounted to the inner frame and configured to emit sound from a front end of the ported speaker assembly. A perimeter port is formed between the outer perimeter portion of the inner frame and the front opening of the outer enclosure. The perimeter port extends uninterrupted to encircle the outer perimeter portion. A plurality of fastener joints secure the inner frame to the outer enclosure, and at least some are distributed around multiple sides of the inner frame and positioned closer to the front opening of the outer enclosure than a rear end of the inner frame.

Ported speaker assembly

An acoustic waveguide includes a plurality of projections to redirect sound waves to obtain a desired wave front, such as a flat plane wave front or an asymmetric curved wave front. The waveguide includes two waveguide members that are mirror images of each other. The waveguide members have corresponding vanes and projections. The waveguide includes an essentially circular input opening for alignment with a compression driver and provides a substantially rectangular output opening from the waveguide.

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Saint Paul, MN, United States of America

Mark Delay