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:
Jun. 03, 2025
Filed:
Nov. 07, 2022
Applicant:
Gp Acoustics International Limited, Pak Shek Kok, HK;
Inventors:
Sebastien Degraeve, Maidstone, GB;
Jack Anthony Oclee-Brown, Staplehurst, GB;
Assignee:
GP Acoustics International Limited, Pak Shek Kok, HK;
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 3/08 (2006.01); H04R 9/02 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 3/002 (2013.01); H04R 3/08 (2013.01); H04R 9/025 (2013.01); H04R 9/063 (2013.01);
Abstract
Electrical circuitry adapted to drive a dual-coil loudspeaker having a primary voice coil and a second voice coil connected in parallel with the primary voice coil, the second voice coil being in series with an LC resonant circuit of impedance Z, further comprising an inductance compensation filter of impedance Zin parallel with the LC resonant circuit.