Abstract: A small, lightweight ceiling speaker assembly in a lightweight plastic tubular L-shaped housing with an inclined rear end closed by an electronics connection panel. The tubular L-shaped housing is assembled from right and left L-shaped halves and encloses a speaker, a multi-tap transformer, and control electronics. Selection of the transformer tap, zone selection, and configuration controls is accomplished manually on the electronics connection panel. Analog ANALOG IN and ANALOG OUT jacks are also located on the electronics connection panel. Spring-biased feet engage the top surface of a ceiling tile or panel to clamp the L-shaped strategically hidden speaker system against an annular flange of a releasably attachable sound diffuser or director.

Abstract: A DIN rail electronics rack having opposed sidewalls with modified “top hat” DIN rails attached therein and equipment attachment rails coupled to and lockable to the DIN rails, which are modified to have a linear array of equally spaced-apart openings aligned on each side of each DIN rail. The DIN rail coupling has a proximal flat surface to abut the equipment rail base panel, and distal opposed clamp ends to engage and retain the “brim” of the “top hat”. A central distal plateau on the coupling includes two nut sockets shaped to prevent nuts from rotating while being threaded. The nut heads are configured to form three channels that align with any three adjacent DIN rail side openings. A three-toothed locking comb is inserted through the DIN rail side openings and three channels to lock the coupling to the DIN rail. A rack crown provides for lighting and fault services.

Abstract: An electronics rack crown for controlling illumination of an electronics rack responsive to door events, externally visually signaling fault conditions in electronic modules mounted in the rack, providing an interchangeable user brand logo panel with back illumination controllable as to intensity and color, and providing for configuration via DIP switches or by SD card. The electronics rack crown has a front piece and an attached rear piece, with a window in the front piece. In the front piece, a logo plate holder holds a replaceable transparent logo plate aligned to the window in a vertical orientation. An electronics compartment with a transparent top panel is horizontally oriented and aligned to the window. High intensity RGB/W LEDs emit from the top of a circuit board below the transparent top panel and back light the logo plate. The LEDs are controllable based on user configuration, fault detection, and door events.

Abstract: A small dual-speaker ceiling speaker system including a loudspeaker and a tweeter with an acoustic diffuser that is adjustable over a range of lengths for different thicknesses of ceiling tile and is independently adjustable over a range of acoustic port sizes. The loudspeaker sends acoustic waves into a acoustic channel that includes a truncated conical shell, or acoustic channel cone, with a cylindrical acoustic channel shell extending therefrom. A tweeter is mounted in the acoustic channel shell. A diffuser couples to the acoustic channel shell using threads that may be engaged or disengaged. The diffuser has a diffuser element that can be raised or lowered with a screw to adjust the size of the acoustic port. The diffuser element has demarcations for visually indicating acoustic port size. A housing with a base having extendable braces supports the speaker system on the ceiling grid, rather than on the tile.

Abstract: A lightweight plastic housing with metal rack rails attached within to support industry-standard electronics modules. The plastic is preferably corrugated plastic folded from a single cut sheet and secured with adhesive. The sheet is folded to make an enclosure having a rectangular cross section, and a fifth short panel overlaps a first panel. Box closures, possibly auto-locking box closures, form the top and bottom of the housing. Metal rack rails and supports for the rack rails are installed through a front opening of the housing and are attached to and supported by the plastic housing. Supports include lengths of asymmetric channel stock extending between the top and the bottom of the housing at four corners to maintain the rack rails spaced apart from the sides of the housing. Upper and lower cross supports extend between front and rear supports.

Abstract: A sound diffuser for a ceiling speaker system having a downward-facing (when installed) flat disc cover plate and a flat barrel flange that assists in clamping a ceiling tile. The downward facing surfaces of the disc cover plate and a flat ring releasably attached to, and covering, the barrel flange are printable surfaces. The ring and the disc are magnetically attractable and are held in place with magnets. The ring and the disc cover plate can be rotated to align patterns printed on the ring and the disc cover plate to align to a pattern on the ceiling and to each other. Three-dimensional printing of the ring and/or the disc cover plate is included. The diffuser is preferably used in conjunction with the SMALL CEILING SPEAKER SYSTEM of U.S. patent application Ser. No. 15/710,654, the entire contents of which are incorporated herein by reference.

Abstract: A small dual-speaker ceiling speaker system including a loudspeaker and a tweeter with an acoustic diffuser that is adjustable over a range of lengths for different thicknesses of ceiling tile and is independently adjustable over a range of acoustic port sizes. The loudspeaker sends acoustic waves into a acoustic channel that includes a truncated conical shell, or acoustic channel cone, with a cylindrical acoustic channel shell extending therefrom. A tweeter is mounted in the acoustic channel shell. A diffuser couples to the acoustic channel shell using threads that may be engaged or disengaged. The diffuser has a diffuser element that can be raised or lowered with a screw to adjust the size of the acoustic port. The diffuser element has demarcations for visually indicating acoustic port size. A housing with a base having extendable braces supports the speaker system on the ceiling grid, rather than on the tile.

Abstract: A smart phone with an application for electronically photographing a section of a patterned ceiling along with a color and grayscale calibration template surrounding the small speaker system installation site, storing the image, uploading the image to a computer that has color correction software, correcting the color of the image, and printing the image on a steel ring and a steel disc for magnetic attachment to a diffuser of a small ceiling speaker system.

Abstract: A lightweight plastic housing with metal rack rails attached within to support industry-standard electronics modules. The plastic is preferably corrugated plastic folded from a single cut sheet and secured with adhesive. The sheet is folded to make an enclosure having a rectangular cross section, and a fifth short panel overlaps a first panel. Box closures, possibly auto-locking box closures, form the top and bottom of the housing. Metal rack rails and supports for the rack rails are installed through a front opening of the housing and are attached to and supported by the plastic housing. Supports include lengths of asymmetric channel stock extending between the top and the bottom of the housing at four corners to maintain the rack rails spaced apart from the sides of the housing. Upper and lower cross supports extend between front and rear supports.

Abstract: An attachment to a small ceiling speaker system that is interchangeable with a diffuser of such system and that provides direct downward direction to sound produced by such system. A director interface is provided for adjustably attaching to an acoustic channel shell of such system. A direct fire ring releasably attaches to the director interface with a fastener. The direct fire ring supports magnets for releasably attaching a foraminous audio speaker grill. The director interface and the direct fire ring have alignable hub and spoke features and the hub and spokes of the director interface partially nest within the hub and spokes of the direct fire ring.

Abstract: A small dual-speaker ceiling speaker system including a loudspeaker and a tweeter with an acoustic diffuser that is adjustable over a range of lengths for different thicknesses of ceiling tile and is independently adjustable over a range of acoustic port sizes. The loudspeaker sends acoustic waves into a acoustic channel that includes a truncated conical shell, or acoustic channel cone, with a cylindrical acoustic channel shell extending therefrom. A tweeter is mounted in the acoustic channel shell. A diffuser couples to the acoustic channel shell using threads that may be engaged or disengaged. The diffuser has a diffuser element that can be raised or lowered with a screw to adjust the size of the acoustic port. The diffuser element has demarcations for visually indicating acoustic port size. A housing with a base having extendable braces supports the speaker system on the ceiling grid, rather than on the tile.

Abstract: A cleanroom compatible elastomeric cover for an acoustic attachment, such as a diffuser or a director, to a Small Ceiling Speaker System. The present invention provides one elastomeric cover for the otherwise exposed axial acoustic port of a director or the exposed radial acoustic port of a diffuser. The cover further provides a cleanroom seal between the diffuser or the director and the ceiling tile. The diffuser and the director are each acoustic attachments to the enclosed speaker portion of the small ceiling speaker that is above the ceiling tile and supported on the ceiling tile support grid, rather than the tile itself. The portion of the small ceiling speaker that is below the ceiling tile includes a sectionally threaded acoustic channel shell and an acoustic attachment. The cover prevents contaminants from entering the cleanroom though the hole in the ceiling tile through which the acoustic channel shell extends.

Abstract: A pair of subwoofer speakers mounted on a carrier in a ceiling speaker enclosure having a small acoustic port using an acoustic channel shell that extends from the enclosure, the output of which is directed by adjustable attachment of a director to the acoustic channel shell. An annular flange on the director is used to clamp to a bottom surface of a ceiling tile. The enclosure has braces for engaging grid members of a suspended ceiling support grid. The braces are independently extendable from the enclosure. The subwoofer speakers at least partially face each other. Vibration damping approaches are used. An audio controller may be used to control the phases of the audio signals to the subwoofer speakers to permit a push-pull synchronization strategy.

Abstract: A small dual-speaker ceiling speaker system including a loudspeaker and a tweeter with an acoustic diffuser that is adjustable over a range of lengths for different thicknesses of ceiling tile and is independently adjustable over a range of acoustic port sizes. The loudspeaker sends acoustic waves into a acoustic channel that includes a truncated conical shell, or acoustic channel cone, with a cylindrical acoustic channel shell extending therefrom. A tweeter is mounted in the acoustic channel shell. A diffuser couples to the acoustic channel shell using threads that may be engaged or disengaged. The diffuser has a diffuser element that can be raised or lowered with a screw to adjust the size of the acoustic port. The diffuser element has demarcations for visually indicating acoustic port size. A housing with a base having extendable braces supports the speaker system on the ceiling grid, rather than on the tile.

Abstract: An LED light ring for ceiling mounted speakers having flanged enclosures with flip dogs is presented. The LED light ring is a flat annular transparent or translucent piece that is clamped between the enclosure flange and the ceiling tile and emits RGB LED light radially outward through the LED light ring. The LED light emits from LEDs mounted on a circular electronic circuit board (flexible or not) on the inner circumference of the LED light ring. The circular electronic circuit is coupled to a controller that controls the color, blink rate, and intensity and has firmware for interpreting simple controller commands into complex LED light patterns and sequences. A plurality of light ring equipped loudspeakers may be in communication with a common controller that can create patterns and sequences among the plurality of light ring equipped loudspeakers.

Abstract: A small speaker for panel mounting in a hole as small as seventy five millimeters diameter in which access to the rear of the panel is not required. The small speaker uses spring-loaded flip dogs that are actuated by rotating a sound disperser that is connected to a hollow cylindrical mechanism having gear teeth on its external surface which engage flip dog gears on the top surfaces of the flip dogs. Internally, the hollow cylindrical mechanism has an indentation that supports a speaker baffle which, in turn supports a speaker bushing. A loudspeaker is attached to the speaker bushing near the speaker baffle. Two housing sections attach, spaced apart, to an annular frame on opposing sides and receive the hollow cylindrical mechanism rotationally therein. The flip dogs operate in the spaces between the housing sections. Methods of mounting and dismounting are described.

Abstract: A corrugated plastic sheet with an acoustically effective material with fold lines as centerlines of V-shaped grooves between panels that can be folded by hand into a covered plastic acoustic enclosure, with or without additional corrugated plastic panels. The sheet has a speaker opening and a speaker support fixture, ring, or panel may assist in supporting the speaker on the enclosure. Foldable flanges and foldable narrow panels with adhesive strips, preferably with release layers, enable assembly of the covered enclosure without tools, other than for speaker installation. An amplifier attached to a panel of the enclosure, preferably on an external surface, is presented. An enclosure that supports more than one speaker is presented. The plastic acoustic enclosure can be shipped flat and unassembled and then assembled by a user. The enclosure is lightweight, and so ships economically and does not significantly burden automobiles in which such enclosures may be installed.

Abstract: A corrugated plastic sheet with fold lines, as centerlines of V-shaped grooves, that can be folded by hand into a plastic acoustic enclosure, with or without additional corrugated plastic panels. A speaker opening is provided in the sheet, and a speaker support fixture, ring, or panel may assist in supporting the speaker on the enclosure. Foldable flanges and foldable narrow panels with adhesive strips, preferably with release layers, enable assembly of the enclosure without tools, other than for speaker installation. An amplifier attached to a panel of the enclosure, preferably on an external surface, is presented. An enclosure that supports more than one speaker is presented. The plastic acoustic enclosure that can be shipped flat and unassembled and then assembled by a user. The enclosure is lightweight, and so ships economically and does not significantly burden automobiles in which such enclosures may be installed.

Abstract: An LED light ring for ceiling mounted speakers having flanged enclosures with flip dogs is presented. The LED light ring is a flat annular transparent or translucent piece that is clamped between the enclosure flange and the ceiling tile and emits RGB LED light radially outward through the LED light ring. The LED light emits from LEDs mounted on a circular electronic circuit board (flexible or not) on the inner circumference of the LED light ring. The circular electronic circuit is coupled to a controller that controls the color, blink rate, and intensity and has firmware for interpreting simple controller commands into complex LED light patterns and sequences. A plurality of light ring equipped loudspeakers may be in communication with a common controller that can create patterns and sequences among the plurality of light ring equipped loudspeakers.