Abstract: Provided in this disclosure is an acoustic adapter which includes an interior enclosure for substantially surrounding a back of a speaker driver and for defining a predetermined three-dimensional interior volume (3DV1) around the back of the speaker driver to thereby act as a vibration dampener. An exterior enclosure is provided having a configuration that corresponds to a configuration of the interior enclosure and spaced apart from the interior enclosure to define a restricted two-dimensional volume (2DV) outside the three-dimensional interior volume. An aperture is formed in the interior surface of the enclosure for admitting sound into the two-dimensional volume. A foam material is received within the two-dimensional volume (2DV) for at least coating an inner surface of the exterior enclosure, to provide a frictional surface for damping the sound admitted into the two-dimensional volume.

Abstract: Provided in this disclosure is an acoustic adapter which includes an interior enclosure for substantially surrounding a back of a speaker driver and for defining a predetermined three-dimensional interior volume (3DV1) around the back of the speaker driver to thereby act as a vibration dampener. An exterior enclosure is provided having a configuration that corresponds to a configuration of the interior enclosure and spaced apart from the interior enclosure to define a restricted two-dimensional volume (2DV) outside the three-dimensional interior volume. An aperture is formed in the interior surface of the enclosure for admitting sound into the two-dimensional volume. A foam material is received within the two-dimensional volume (2DV) for at least coating an inner surface of the exterior enclosure, to provide a frictional surface for damping the sound admitted into the two-dimensional volume.

Abstract: A sound enhancement module includes a set of walls that define an enclosed chamber, an aperture in one of the walls to provide a path for audio waves to travel between the enclosed chamber and an external space and an alternative density transmission medium positioned in the enclosed chamber.

Abstract: A sound enhancement module includes a set of walls that define an enclosed chamber, an aperture in one of the walls to provide a path for audio waves to travel between the enclosed chamber and an external space and an alternative density transmission medium positioned in the enclosed chamber.

Abstract: A speaker enclosure includes a first set of walls defining a first box, a second set of walls defining a second box disposed within the first box to define an enclosed compartment between the first set of walls and the second set of walls, an aperture located at least one of the second set of walls defining an opening between the internal volume of the second box and the enclosed compartment, and an alternative density transmission medium affixed to one or more surfaces of the first set of walls and/or the second set of walls in the enclosed compartment.

Abstract: A loudspeaker system comprising a closed cabinet containing a tuned port, an electromechanical driver, an acoustic radial transmission line (VARTL), a reactive alternate density transmission medium (ADTM) load and a radial right angle wave guide (RRAWG). The VARTL is disposed around and in front of the cone of the driver so as to isolate the driver from reflected signals it produces, while simultaneously allowing the driver to remain inert to the reflected signals, acoustic summation or stimulus. The ADTM slows the speed of the wave, thereby causing delay and intentional attenuation of the initial waveform while, by way of radial expansion, allows the proper exit velocity. This system allows the cone to drive the port air mass and the VARTL air mass with essentially equal pressure on each cycle throughout the frequency range of the VARTL and substantially reduces mechanical vibrations in the cabinet by effecting balanced pressures.