Multiple tuned high power bass reflex speaker system
First Claim
1. A bass reflex speaker system comprisinga first low frequency transducer facing forward into free space,a first ported chamber behind said first low frequency transducer, said first ported chamber being tuned to a first resonant frequency within the low frequency audio band,a second low frequency transducer facing forward into free space and disposed adjacent said first low frequency transducer, anda second ported chamber behind said second low frequency transducer, said second ported chamber being tuned to a second resonant frequency in the low frequency audio band different from said first resonant frequencysaid first and second ported chambers being acoustically isolated to prevent said first chamber from acoustically coupling to said second chamber.
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Accused Products
Abstract
A bass reflex loud speaker system for use in high power applications which includes an enclosure with at least two, and preferably three, cone drivers mounted in front of separate and acoustically isolated bass reflex chambers. Each bass reflex chamber is tuned to a separate octave such that the bass reflex modules formed by each bass reflex chamber and its associate cone driver produces a complex acoustical signal comprised of different frequency components in the low frequency range at high sound pressure levels, but with minimum driver cone excursion and distortion.
38 Citations
15 Claims
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1. A bass reflex speaker system comprising
a first low frequency transducer facing forward into free space, a first ported chamber behind said first low frequency transducer, said first ported chamber being tuned to a first resonant frequency within the low frequency audio band, a second low frequency transducer facing forward into free space and disposed adjacent said first low frequency transducer, and a second ported chamber behind said second low frequency transducer, said second ported chamber being tuned to a second resonant frequency in the low frequency audio band different from said first resonant frequency said first and second ported chambers being acoustically isolated to prevent said first chamber from acoustically coupling to said second chamber.
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8. A bass reflex speaker system comprising
a speaker enclosure having a front baffle wall facing forward into free space, and at least two low frequency transducers mounted to said front baffle wall, each of said transducers having a piston member of a characteristic size which displaces a given volume of air for a given excursion of the pistons, said speaker enclosure having an internal volume behind said front baffle wall and internal partition walls for partitioning said internal volume into at least two separate chambers having different volumes, each of said transducers being mounted to said front baffle wall in front of a separate one of said transducer chambers, and each of said chambers being ported to provide separate bass reflex chambers tuned to different frequencies within the low frequency audio band and being acoustically isolated one from another to prevent one of said chambers from acoustically coupling to the other of said chambers.
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13. A bass reflex speaker system comprising
a speaker enclosure having a front baffle wall facing forward into free space, three low frequency transducers mounted to said front baffle wall, each of said transducers having a circular piston member of a different characteristic diameter, said speaker enclosure having an internal volume behind said front baffle wall and internal partition walls for partitioning said internal volume into three separate transducer chambers having different volumes such that each of said transducers is mounted in front of a separate chamber, each of said chambers being isolated from one another acoustically to prevent one of said chambers from acoustically coupling to another of said chambers, and said chambers being ported to provide separate bass reflex transducer chambers tuned one octave apart within the low frequency audio band.
Specification