Vacuum tube subwoofer extraction circuit system
AssigneeEchowell Electronic Co., Ltd.
InventorHsi-Hsien Chen
Life of this patent
Estimating the term…
Abstract
A vacuum tube subwoofer extraction circuit system includes: a front-end circuit; and a vacuum tube subwoofer extraction circuit connected to the front-end circuit, the vacuum tube subwoofer extraction circuit including: a small signal amplification vacuum tube for receiving an input signal from the front-end circuit and outputting an audio signal; and a passive filtering circuit connected to the small signal amplification vacuum tube and adapted to perform a filtering process on the audio signal so as to output a filtered signal, wherein the front-end circuit includes a switch power circuit for providing low voltage to the vacuum tube subwoofer extraction circuit, wherein the small signal amplification vacuum tube does not have gain effect on the input signal.
Claims7
A vacuum tube subwoofer extraction circuit system, comprising:
- a front-end circuit;
- and
- a vacuum tube subwoofer extraction circuit connected to the front-end circuit, the vacuum tube subwoofer extraction circuit comprising:
- a small signal amplification vacuum tube for receiving an input signal from the front-end circuit and outputting an audio signal;
- and
- a passive filtering circuit connected to the small signal amplification vacuum tube and adapted to perform a filtering process on the audio signal so as to output a filtered signal,
- wherein the front-end circuit comprises a switch power circuit for providing low voltage to the vacuum tube subwoofer extraction circuit,
- wherein the small signal amplification vacuum tube does not have gain effect on the input signal.
Dependencies are inferred from the claim text.