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:
Jul. 24, 1990
Filed:
Mar. 01, 1989
Applicant:
Inventor:
Hiroshi Watanabe, Hachioji, JP;
Assignee:
Kabushiki Kaisha Kenwood, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381 90 ; 381186 ; 381188 ; 381205 ; 181145 ; 181146 ; 181199 ;
Abstract
A low sound region reproducing speaker system comprising a box, a partition separating the internal space of the box into two spatial portions, a pair of speakers attached to the partition wall, and an aperture formed in the side wall of the box through which one of the spatial portions communicates with the external space. Right and left stereophonic channel signals are respectively reproduced through the pair of speakers. Only the low sound region is emitted into the external space. The partition wall has therein a communication hole for communicating the two spatial portions therethrough with each other.