ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,084, issued on June 2, was assigned to D'Amore Engineering LLC (Camarillo, Calif.).
"Amplifier power attenuator and closed loop operation" was invented by Anthony T. D'Amore (Camarillo, Calif.) and Juan Rodriguez (Mesa, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An amplifier power attenuator utilizes an amplified audio feedback signal from an audio amplifier (which is driving a loudspeaker), along with a user-set impedance and a maximum voltage set-point reflective of the operational parameters of the loudspeaker, to attenuate an audio signal prior to amplification thereby preventing damage to the loudspeaker. The impedance of a variable im...