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US 2011/0085692 A1Published application
Dual compression drivers and phasing plugs for compression drivers
AssigneeHarman International Industries, Incorporated
InventorAlexander Voishvillo
Life of this patent
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Abstract
A phasing plug includes a base portion including an input side, an output side, a plurality of entrances on the input side, a plurality of exits on the output side arranged about a central axis, and a plurality of channels fluidly interconnecting the entrances with the respective exits. Each corresponding entrance, channel and exit establish an acoustical path from the input side to the output side that is non-radial relative to the central axis. Two phasing plugs may be provided in a dual compression driver.
Claims55
A dual phasing plug assembly for a compression driver, the dual phasing plug assembly comprising:
- a first phasing plug including:
- a first base portion including a first input side, a first output side, a central bore coaxial with a central axis and extending from the first input side to the first output side, a plurality of first entrances on the first input side, a plurality of first exits communicating with the central bore on the first output side, and a plurality of first channels fluidly interconnecting the first entrances with the respective first exits, where each corresponding first entrance, first channel and first exit establish a first acoustical path that is non-radial relative to the central axis;
- and
- a second phasing plug including:
- a second base portion including a second input side, a second output side facing the first output side, a plurality of second entrances on the second input side, a plurality of second exits on the second output side, and a plurality of second channels fluidly interconnecting the second entrances with the respective second exits, where each corresponding second entrance, second channel and second exit establish a second acoustical path that is non-radial relative to the central axis;
- and
- a hub portion extending along the central axis from the second output side through the central bore, the hub portion including an outside surface having a diameter coaxial with the central axis,
- where the first exits and the second exits communicate with an annular region between the central bore and the outside surface.
5 more elements
A dual compression driver, comprising:
- a first magnet assembly including an annular first air gap;
- a first voice coil assembly axially movable in the first air gap;
- a first diaphragm attached to the first voice coil assembly;
- a second magnet assembly including an annular second air gap;
- a second voice coil assembly axially movable in the second air gap;
- a second diaphragm attached to the second voice coil assembly;
- a first phasing plug including:
- a first base portion including a first input side axially spaced from the first diaphragm to form a first compression chamber, a first output side, a central bore coaxial with a central axis and extending from the first input side to the first output side, a plurality of first entrances on the first input side communicating with the first compression chamber, a plurality of first exits communicating with the central bore on the first output side, and a plurality of first channels fluidly interconnecting the first entrances with the respective first exits, where each corresponding first entrance, first channel and first exit establish a first acoustical path that is non-radial relative to the central axis;
- and
- a second phasing plug including:
- a second base portion including a second input side axially spaced from the second diaphragm to form a second compression chamber, a second output side facing the first output side, a plurality of second entrances on the second input side communicating with the second compression chamber, a plurality of second exits on the second output side, and a plurality of second channels fluidly interconnecting the second entrances with the respective second exits, where each corresponding second entrance, second channel and second exit establish a second acoustical path that is non-radial relative to the central axis;
- and
- a hub portion extending along the central axis from the second output side through the central bore, the hub portion including an outside surface having a diameter coaxial with the central axis,
- where the first exits and the second exits communicate with an annular region between the central bore and the outside surface.
11 more elements
A phasing plug, comprising:
- a base portion including an input side, an output side, a plurality of entrances on the input side, a plurality of exits on the output side arranged about a central axis, and a plurality of channels fluidly interconnecting the entrances with the respective exits, where each corresponding entrance, channel and exit establish an acoustical path from the input side to the output side that is non-radial relative to the central axis, and the entrances lie along a plurality of lines collectively forming a polygon that includes greater than four vertices at which neighboring lines adjoin.
Dependencies are inferred from the claim text.