The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1995
Filed:
Dec. 30, 1993
Applicant:
Inventors:
David Navone, Stockton, CA (US);
Richard L Clark, Burlington, NC (US);
Assignee:
Monster Cable International, Ltd., South San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04S / ;
U.S. Cl.
CPC ...
381 28 ; 381 24 ;
Abstract
A circuit for coupling a 2- or 4-channel audio deck to 2- or 4-speakers in a car stereo audio system to increase the signal level output without raising the supply voltage or increasing the noise. The circuit comprises unity gain inverting and non-inverting amplifiers each connected in one of four channels, with the outputs combined to provide left and right channel outputs for series connection, respectively, to the left and right channel speakers.