# US 10,484,785 B2 · Speaker baffle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,785 B2 - Document ID: US10484785B2 - Status: Granted - Kind: B2 - Application number: 15/146,213 - Filed: 2016-05-04 - Published: 2016-08-25 - Granted: 2019-11-19 - Earliest claimed: 2013-11-15 - Assignees: IMAX Corporation - Applicants: IMAX Corporation - Inventors: Denis Gilles Tremblay - Web page: https://patentgrep.com/patent/US10484785B2 ## CPC - H04R 1/2803: {for loudspeaker transducers} - H04R 1/02: Casings; Cabinets {; Supports therefor;} Mountings therein (H04R1/28 takes precedence {; attachments for microphones H04R1/08; mounting of transducers in earpieces H04R1/1075}) - H04R 1/26: Spatial arrangements of separate transducers responsive to two or more frequency ranges - H04R 2201/021: Transducers or their casings adapted for mounting in or to a wall or ceiling - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract A loudspeaker cabinet having at least one side wall defining a side wall perimeter; a front wall mounted to the at least one side wall along the side wall perimeter, the front wall having a front surface; wherein a central area of the front surface is positioned within the side wall perimeter, an extended area of the front surface extends beyond the side wall perimeter, and a portion of the extended area is configured to provide a gradual transition to open free space. ## Claims ### Claim 1 A loudspeaker cabinet comprising: a plurality of side walls defining a side wall perimeter, the plurality of side walls comprising a first side wall and a second side wall; a front wall mounted to the first side wall along a first side wall edge and the second side wall along a second side wall edge, the first side wall edge being a vertical edge, and the second side wall edge being a horizontal edge, the front wall having a front surface; and an extended area extending outwardly with respect to the first side wall edge and the second side wall edge, the extended area being substantially coplanar with the front surface; wherein the front surface with comprises at least two speakers mounted along a vertical center axis of the cabinet such that each speaker is positioned within the side wall perimeter with a first distance in a first direction between a center of the corresponding speaker and the first side wall edge, wherein a portion of the extended area comprises at least one profile feature in the first direction, the front surface and the at least one profile feature forming a continuous surface, the at least one profile feature having a length based on the first distance enabling the portion of the extended area to provide a gradual transition to open free space to create a gradual air load transition on sound waves produced by the at least two speakers. ### Claim 2 (depends on 1) The loudspeaker cabinet of claim 1, wherein the entire extended area is configured to provide the gradual transition to open free space. ### Claim 3 (depends on 1) The loudspeaker cabinet of claim 1, wherein the portion of the extended area comprises a linear extension of the front surface in the first direction terminating in a first front surface edge, with at least one first profile feature extending from the first front surface edge. ### Claim 4 (depends on 3) The loudspeaker cabinet of claim 3, wherein the length of the at least one first profile feature is based on a distance from the center of one of the at least two speakers to the first front surface edge. ### Claim 5 (depends on 4) The loudspeaker cabinet of claim 4, wherein the length of the at least one first profile feature is between 10% and 40% of the distance from the center of one of the at least two speakers to the first front surface edge. ### Claim 6 (depends on 3) The loudspeaker cabinet of claim 3, wherein: the portion of the extended area further comprises: a second front surface edge associated with the second side wall, with at least one second profile feature projecting from the second front surface edge in the second direction. ### Claim 7 (depends on 6) The loudspeaker cabinet of claim 6, wherein the length of the at least one second profile feature is based on a second distance from the center of a speaker of at least two speakers with the lowest frequency range to the second front surface edge in the second direction. ### Claim 8 (depends on 7) The loudspeaker cabinet of claim 7, wherein the length of the at least one second profile feature is between 10% and 40% of the second distance. ### Claim 9 (depends on 1) The loudspeaker cabinet of claim 1, wherein the at least one profile feature comprises a tooth. ### Claim 10 (depends on 1) The loudspeaker cabinet of claim 1, wherein the at least one profile feature comprises a sinusoidal wave. ### Claim 11 (depends on 1) The loudspeaker cabinet of claim 1, wherein the portion of the extended area comprises a plurality of adjacent profile features configured to provide a gradual transition to open free space to create a gradual air load transition on sound waves produced by the at least one speaker. ### Claim 12 (depends on 1) The loudspeaker cabinet of claim 1, wherein the at least one profile feature is integral with the front surface. ### Claim 13 (depends on 1) The loudspeaker cabinet of claim 1, wherein the extended area further comprises at least one profile feature extending from the second side wall edge in a second direction, the at least one profile feature in the second direction profile feature having a length based on a second distance in the second direction between a center of one of the at least two speakers with the lowest frequency range to the second side wall edge. ### Claim 14 A loudspeaker cabinet comprising: a plurality of side walls defining a side wall perimeter, the plurality of side walls comprising a first side wall and a second side wall; a front wall mounted to the first side wall along a first side wall edge and the second side wall along a second side wall edge, the first side wall edge being a vertical edge, and the second side wall edge being a horizontal edge, the front wall having a front surface; and an extended area extending outwardly with respect to the first side wall edge and the second side wall edge, the extended area being substantially coplanar with the front surface; wherein the front surface comprises at least two speakers mounted along a vertical axis of the cabinet such that each speaker is positioned within the side wall perimeter with a first side wall distance in a first direction between a center of the corresponding speaker and the first side wall edge, and wherein a portion of the extended area comprises a first linear extension of the front surface in the first direction terminating in a first front surface edge, with at least one first profile feature extending from and forming a continuous surface with the first front surface edge, the at least one first profile feature having a length based on a first surface edge distance between the center of one of the at least two speakers and the first front surface edge enabling the at least one first profile feature to provide a gradual transition to open free space to create a gradual air load transition on sound waves produced by the at least two speakers. ### Claim 15 (depends on 14) The loudspeaker cabinet of claim 14, wherein the at least one first profile feature comprises a triangular tooth. ### Claim 16 (depends on 14) The loudspeaker cabinet of claim 14, wherein the at least one first profile feature comprises a wavy tooth. ### Claim 17 (depends on 14) The loudspeaker cabinet of claim 14, wherein the at least one first profile feature is integral with the front surface. ### Claim 18 (depends on 14) The loudspeaker cabinet of claim 14, wherein the portion of the extended area further comprises a second linear extension of the front surface in the second direction terminating in a second front surface edge, with at least one second profile feature extending from and forming a continuous surface with the second front surface edge, the at least one second profile feature having a length based on a second surface edge distance between a center of one of the at least two speakers with the lowest frequency range and the second front surface edge. ### Claim 19 A loudspeaker cabinet comprising: a plurality of side walls defining a side wall perimeter, the plurality of side walls comprising a first side wall and a second side wall; a front wall mounted to the first side wall along a first side wall edge and the second side wall along a second side wall edge, the first side wall edge being a vertical edge, and the second side wall edge being a horizontal edge, the front wall having a front surface; and an extended area extending outwardly with respect to the first side wall edge and the second side wall edge, the extended area being substantially coplanar with the front surface; wherein the front surface comprises at least two speakers mounted along a vertical axis of the cabinet such that each speaker is positioned within the side wall perimeter with a first distance in a first direction between a center of the corresponding speaker and the first side wall edge, and wherein a portion of the extended area comprises a first plurality of profile features in the first direction, each of the first plurality of profile features having a length based on the first distance enabling a first plurality of adjacent profile features to provide a gradual transition to open free space to create a gradual air load transition on sound waves produced by the at least two speakers, and wherein the front surface and the first plurality of profile features form a continuous surface. ### Claim 20 (depends on 19) The loudspeaker cabinet of claim 19, wherein the first plurality of profile features are integral with the front surface. ### Claim 21 (depends on 19) The loudspeaker cabinet of claim 19, wherein the portion of the extended area further comprises a second plurality of profile features extending from the second side wall edge in the second direction, each of the second plurality of profile features having a length based on a second distance in the second direction between a center of one of the at least two speakers with the lowest frequency range to the second side wall edge.