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| Amplifier arrangement for use as a line driver |
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Low range loudspeaker system
| Details |
Inventors: Nestorovic, Mioljub R.; Modafferi, Richard;
Assignee: Electro Acoustical Labs, Inc. (New York, NY)
Primary Examiner: Stellar; George G.
Assistant Examiner:
Attorney, Agent or Firm:
An audio speaker system that provides enhanced fidelity of sound reproduction in the bass acoustic frequency range, by comprising a usual driven primary radiator, a pair of conductors for connecting the primary radiator to its energy source, a driven auxiliary radiator connected to that pair of conductors via a reactive network, both radiators being acoustically coupled by being housed in a closed cabinet common to both of them except for the respective separate diaphragm openings for each of said radiators, and the respective function and value of the individual component elements of said network relative to one another and the volume of the cabinet are such as to have the system operate on the bass-reflex principle. |
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DETAILED DESCRIPTION What is claimed is: 1.
An audio speaker system comprising the usual driven primary radiator having a cone and a voice coil and capable of responding to audio frequency signals extending over a wide range including an upper or high frequency range and down to a lower or bass frequency range, a pair of conductors for connecting said primary radiator to its energy source, a driven auxiliary radiator having a cone of a voice coil, a reactive network which is connected in series with the voice coil of said auxiliary radiator, said series combination of said reactive network and auxiliary radiator being connected in parallel with the voice coil of said primary radiator, both of said radiators being housed and acoustically coupled in a closed cabinet common to both of them except for the respective cone opening for each of said radiators, the cone size, compliance and mass of each of said radiators, and the component elements of the network as to respective function and value relative to one another and the volume of said cabinet being such that at the upper portion of the useful frequency range of said audio signals said primary and auxiliary radiators operate substantially as though they are connected directly in parallel, and at the base portion of said frequency range of sound radiation said auxiliary radiator operates to enhance the bass frequency efficiency of the acoustic output and to extend the bass frequency response range of said audio speaker system to a still lower level.
2.
An audio speaker system of claim 1, wherein the compliance of the auxiliary radiator is greater than that of the primary radiator and up to as much higher as is practically possible yet to maintain the physical integrity of the cone and its function.
3.
An audio speaker system of claim 1, wherein the self resonance in free air of the auxiliary radiator is lower than that of the primary radiator.
4.
An audio speaker system of claim 1, wherein the cone mass of the auxiliary radiator is at least equal to, and better yet significantly higher than, that of the primary radiator and up to such higher value as the design parameters suitable for the proper function of the auxiliary radiator require
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