Impedance matching circuit for driving a speaker system
First Claim
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1. A circuit for improving efficiency of an array of speakers having a positive and negative terminal, comprising:
- a first circuitry configured to couple the positive terminal of the array of speakers with an audio signal source, wherein the first circuitry comprises an inductor configured to reduce reflection of an audio signal by the array of speakers; and
a second circuitry configured to operatively interpose a capacitor and an electrically variable resistor between the positive terminal of the array of speakers and the negative terminal of the array of speakers.
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Abstract
An impedance matched resonant circuit uses inductors coupling an audio source and a speaker array in order to reduce feedback reflection induced by an audio signal traveling from the audio source to the array of speakers. An RC circuit could also be coupled to the positive and negative terminals of the speaker array to reduce the slope differential of the audio signal at certain frequencies. The circuit can be packaged together in a single module with switches to activate and deactivate portions of the circuit to alter the effectiveness of the circuit depending upon need.
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Citations
28 Claims
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1. A circuit for improving efficiency of an array of speakers having a positive and negative terminal, comprising:
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a first circuitry configured to couple the positive terminal of the array of speakers with an audio signal source, wherein the first circuitry comprises an inductor configured to reduce reflection of an audio signal by the array of speakers; and a second circuitry configured to operatively interpose a capacitor and an electrically variable resistor between the positive terminal of the array of speakers and the negative terminal of the array of speakers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An audio enhancement kit comprising:
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a first circuitry comprising a first inductor configured to be coupled to a positive terminal of an array of speakers; a second circuitry comprising a second inductor configured to be coupled to a negative terminal of the array of speakers; and a third circuitry that couples to both the positive terminal and the negative terminal of the array of speakers, comprising a resistor and a variable capacitor. - View Dependent Claims (15, 16, 17)
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18. A circuit for improving efficiency of an array of speakers having a positive and negative terminal, comprising:
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a first circuitry configured to couple the positive terminal of the array of speakers with an audio signal source, wherein the first circuitry comprises an inductor configured to reduce reflection of an audio signal by the array of speakers; and a second circuitry configured to operatively interpose a variable capacitor and an electrically varied variable resistor between the positive terminal of the array of speakers and the negative terminal of the array of speakers, wherein a capacitance of the variable capacitor is controlled by a computer programmable logic controller. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A circuit for improving efficiency of an array of speakers having a positive and negative terminal, comprising:
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a first circuitry configured to couple the positive terminal of the array of speakers with an audio signal source, wherein the first circuitry comprises an inductor configured to reduce reflection of an audio signal by the array of speakers; and a second circuitry configured to operatively interpose a digitally tuned variable capacitor and an electrically varied variable resistor between the positive terminal of the array of speakers and the negative terminal of the array of speakers. - View Dependent Claims (25, 26, 27, 28)
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Specification