Satellitic compact electroacoustical transducing
First Claim
1. A loudspeaker system comprising,an upper frequency assembly for radiating acoustical energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of at least substantially 150 Hz,said upper frequency assembly including a ported enclosure having a front face of predetermined height and width,said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width,said driver having a moving voice coil of diameter greater than half said cone diameter in an airgap,said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said diaphragm of at least 3.5 millimeters peak-to-peak to provide a predetermined maximum sound level for spectral components in the range above the predetermined upper frequency of output levels of at least 105 db substantially one meter therefrom on a driver axis without audible distortion.
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Accused Products
Abstract
A loudspeaker system includes an upper frequency assembly that radiates acoustical energy having spectral components in the audio frequency range above a predetermined upper frequency, typically at the high end of the bass frequency range between 150 and 200 Hz. The assembly includes a ported enclosure with a front face enclosing a loudspeaker driver with a cone adjacent to the front face of diameter slightly less than at least one of the height and width of the enclosure.
35 Citations
26 Claims
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1. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of at least substantially 150 Hz, said upper frequency assembly including a ported enclosure having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width, said driver having a moving voice coil of diameter greater than half said cone diameter in an airgap, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said diaphragm of at least 3.5 millimeters peak-to-peak to provide a predetermined maximum sound level for spectral components in the range above the predetermined upper frequency of output levels of at least 105 db substantially one meter therefrom on a driver axis without audible distortion.
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9. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency, said upper frequency assembly including a ported enclosure having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width, said driver having a voice coil of diameter greater than half said cone diameter, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said diaphragm within predetermined limits to provide a predetermined maximum sound level for spectral components within said audible frequency range above said predetermined frequency without audible distortion, wherein said enclosure further includes an internal baffle and an intermediate port in said baffle, said internal baffle dividing said enclosure into an inside subchamber adjacent to said driver and an outside subchamber adjacent to said main port, said intermediate port characterized by an intermediate acoustic mass and said output subchamber characterized by output subchamber compliance to establish an intermediate port-acoustic-mass-output-subchamber-acoustic-compliance resonant frequency that is at least one octave above said fundamental mass-compliance resonant frequency.
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12. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency, said upper frequency assembly including a ported enclosure having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width, said driver having a voice coil of diameter greater than half said cone diameter, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said diaphragm within predetermined limits to provide a predetermined maximum sound level for spectral components within said audible frequency range above said predetermined frequency without audible distortion, and a feed-through connector in a wall of said enclosure having an inside terminal pair connected to an outside terminal pair with the cross-sectional area of each outside terminal different from the cross-sectional area of each inside terminal and the separation between the inside terminals is different from the separation between the outside terminals wherein each of the terminals of the terminal pair consists of a continuous conductor.
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13. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of about 200 Hz, said upper frequency assembly including a ported enclosure of volume less than about 250 cc having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a driver axis with a cone of diameter slightly less than at least one of said predetermined height and width and less than approximately 5.0 cm, said loudspeaker driver comprising a motor with a voice coil attached to said cone, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said cone of at least 3.5 millimeters peak-to-peak to provide a predetermined maximum sound level of at least 105 dB substantially one meter therefrom on said driver axis over substantially all said audible frequency range above said predetermined upper frequency without audible distortion.
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17. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency of about 200 Hz, said upper frequency assembly including a ported enclosure of volume less than about 250 cc having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a driver axis with a cone of diameter slightly less than at least one of said predetermined height and width and less than approximately 5.0 cm, said driver comprising a motor with a voice coil attached to said cone, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said cone of at least 3.5 millimeters peak-to-peak to provide a predetermined maximum sound level of at least 105 dB substantially one meter therefrom on said driver axis over substantially all said audible freguency range above said predetermined upper frequency without audible distortion, and a bass enclosure separate from said upper frequency assembly constructed and arranged for connection to said upper frequency assembly for radiating acoustical energy with spectral components in the bass frequency range below said predetermined upper frequency.
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18. A loudspeaker system driver having a moving voice coil in an airgap and a pot type magnetic structure with a pot,
said pot formed with an outer portion and with an annular extension extended from the outer portion of the pot with an airspace between the end of the extension and the end of the outer portion of the pot to reduce magnetic fringing flux, wherein the end of the outer portion is formed with an inner pole for defining the airgap for said moving voice coil.
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19. A loudspeaker enclosure characterized by acoustic compliance having a main port characterized by acoustic mass and an internal baffle with an intermediate port in said internal baffle,
said internal baffle dividing said enclosure into an outside subchamber adjacent to said main port and an inside subchamber, said intermediate port characterized by an intermediate acoustic mass and said outside subchamber characterized by output subchamber compliance to establish an intermediate port acoustic-mass-output-subchamber-acoustic compliance resonant frequency that is at least one octave above the fundamental acoustic mass-acoustic compliance resonant frequency established by the acoustic mass of said main port and the compliance of said enclosure.
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20. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustic energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of the order of 200 Hz, said upper frequency assembly having a loudspeaker driver having a driver axis with a cone of diameter less than substantially 5 centimeters, said driver having an efficiency β - of at least 1.6 Newtons2 /watt,
said upper frequency assembly constructed and arranged to provide a predetermined maximum sound level of at least 105 dB substantially one meter therefrom on said driver axis over substantially all said audible frequency range above said predetermined upper frequency without audible distortion.
- of at least 1.6 Newtons2 /watt,
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21. A loudspeaker system comprising,
at least first and second upper frequency assemblies for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency, each upper frequency assembly including an enclosure having an enclosure volume of less than 250 cc and constructed and arranged to provide a predetermined maximum sound pressure level of at least 90 dB substantially one meter therefrom over substantially all said audible frequency range above said predetermined upper frequency without audible distortion, and a nonlocalizable bass enclosure separate from said upper frequency assemblies constructed and arranged for connection to said upper frequency assemblies for radiating acoustical energy with spectral components in the bass frequency range below said predetermined upper frequency, whereby localization only occurs on said upper frequency assemblies.
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24. A loudspeaker system comprising,
first and second upper frequency assemblies, each upper frequency assembly for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency of about 200 Hz, said upper frequency assembly including a ported enclosure of volume less than about 250 cc having a front face of predetermined height and width, said enclosure enclosing a loudspeaker driver adjacent to said front face having a driver axis with a cone of diameter slightly less than at least one of said predetermined height and width and less than approximately 5.0 cm, said driver comprising a motor with a voice coil attached to said cone, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said cone within predetermined limits to provide a predetermined maximum sound level of at least 105 dB substantially one meter therefrom on said driver axis over substantially all said audible frequency range above said predetermined upper frequency without audible distortion, and a nonlocalizable bass enclosure separate from said upper frequency assemblies constructed and arranged for connection to said upper frequency assemblies for radiating acoustical energy with spectral components in the bass frequency range below said predetermined upper frequency, whereby localization only occurs on said upper frequency assemblies.
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25. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustical energy with spectral components in the audible frequency range above a predetermined upper frequency of about 200 Hz, said upper frequency assembly including a ported enclosure having a front face of predetermined height and width and less than approximately 5.0 cm, said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width and less than approximately 5.0 cm, said driver comprising a motor with a voice coil, said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency and coacts with said motor to establish a maximum excursion of said cone of at least 3.5.
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26. A loudspeaker system comprising,
an upper frequency assembly for radiating acoustic energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of the order of 200 Hz, said upper frequency assembly having a loudspeaker driver having a cone of diameter less than substantially 5 centimeters, said driver having an efficiency β - of at least 1.6 Newtons2 /watt,
said upper frequency assembly constructed and arranged to establish a maximum linear axial motion of said cone of at least 3.5 millimeters peak-to-peak over substantially all said audible frequency range above said predetermined upper frequency without audible distortion.
- of at least 1.6 Newtons2 /watt,
Specification