Active sub-woofer speaker system
AssigneeBroan-NuTone LLC
InventorTejaswi Vishwamitra
Life of this patent
Estimating the term…
Abstract
A powered or active sub-woofer speaker system includes a power supply circuit, an audio amplifier circuit and a sub-woofer audio driver. The power supply circuit includes a toroidal power transformer to supply power to the audio amplifier circuit. The amplifier circuit includes a class-D audio amplifier adapted to amplify signals received from an audio source and to couple them to the sub-woofer audio driver. Each of the power supply circuit, audio amplifier circuit and sub-woofer audio driver has a low profile to permit the sub-woofer speaker system to be mounted in a closely confined space such as a house wall cavity.
Claims18
A modular active sub-woofer speaker system adapted for recess into a wall having a plurality of studs, the modular active sub-woofer speaker system comprising:
- a first housing mounted to at least one of the plurality of studs and recessed within the wall, the first housing including
- a power supply circuit, and
- an audio amplifier circuit including a class-D audio amplifier coupled to said power supply circuit for receiving power therefrom and adapted to be coupled to a source of audio signals;
- and
- a second housing mounted to at least one of the plurality of studs and recessed within the wall, the second housing including
- a sub-woofer audio driver coupled to said audio amplifier circuit and operable to produce sound in response to said audio signals coupled to said class-D amplifier.
A modular active sub-woofer speaker system adapted for recess into a wall having a plurality of studs, the modular active sub-woofer speaker system comprising:
- a first housing mounted to a wall stud and recessed within the wall, the first housing including
- a power supply circuit having a toroidal power transformer coupled to a rectifier and filter circuit, and
- an audio amplifier circuit including a class-D audio amplifier coupled to said rectifier and filter circuit for receiving power therefrom and adapted to be coupled to a source of audio signals;
- and
- a second housing mounted to said wall stud and recessed within the wall, the second housing mounted adjacent to the first housing, the second housing including
- a sub-woofer audio driver coupled to said audio amplifier circuit and operable to produce sound in response to said audio signals coupled to said class-D amplifier.
A modular active sub-woofer speaker system adapted for recess into a wall having a plurality of studs, the modular active sub-woofer speaker system comprising:
- a first housing mounted to a wall stud and recessed within the wall, the first housing including
- a power supply circuit having a toroidal power transformer coupled to a rectifier and filter circuit, and
- an audio amplifier circuit including an audio preamplifier circuit having an audio input adapted to be coupled to a source of audio signals and an audio output coupled to a class-D audio amplifier, each of said audio preamplifier circuit and said class-D audio amplifier being coupled to said rectifier and filter circuit for receiving power therefrom;
- and
- a second housing mounted to said wall stud and recessed within the wall, the second housing mounted adjacent to the first housing, the second housing including
- a sub-woofer audio driver coupled to said audio output of said class-D audio amplifier and operable to produce sound in response to said audio signals coupled to said audio preamplifier circuit.
Dependencies are inferred from the claim text.