US 12,652,498 B1Granted

Loudspeaker performance utilizing coupled loudspeaker motors

AssigneeAmazon Technologies, Inc.

InventorsDouglas K. Hogue, William Ryan, Temilade Adetoro Adeyemo, Wing Kit Ho

Life of this patent

Estimating the term…

Loading patent…

Abstract

Systems, apparatuses, methods, and techniques are described for providing improved loudspeaker performance by utilizing coupled loudspeaker motors. According to an example method, a first baseplate of a first loudspeaker motor is coupled to a second baseplate of a second loudspeaker motor such that the first loudspeaker motor and the second loudspeaker motor are oriented in opposing directions. The example method further includes repelling, based on a first magnetic polarity of the first baseplate, a first magnetic flux leakage associated with the second baseplate of the second loudspeaker motor such that the first magnetic flux leakage is redirected towards the second loudspeaker motor. The example method further includes repelling, based on a second magnetic polarity of the second baseplate, a second magnetic flux leakage associated with the first baseplate of the first loudspeaker motor such that the second magnetic flux leakage is redirected towards the first loudspeaker motor.

Claims20

Dependent claims

An apparatus, comprising:

a first loudspeaker comprising:
a first loudspeaker motor comprising:
a first baseplate, wherein the first baseplate comprises a first centrally located pole piece protruding from a top surface of the first baseplate;
a first magnet, wherein a bottom surface of the first magnet is coupled to the top surface of the first baseplate;
a second magnet, wherein the second magnet is coupled to a distal end of the first centrally located pole piece;
and
a second loudspeaker comprising:
a second loudspeaker motor comprising:
a second baseplate, wherein the second baseplate comprises a second centrally located pole piece protruding from a top surface of the second baseplate;
a third magnet, wherein a bottom surface of the third magnet is coupled to the top surface of the second baseplate;
a fourth magnet, wherein the fourth magnet is coupled to a distal end of the second centrally located pole piece,
wherein the first baseplate of the first loudspeaker motor is coupled to the second baseplate of the second loudspeaker motor such that an orientation of the first loudspeaker opposes an orientation of the second loudspeaker,
wherein the first magnet is oriented such that the first baseplate has a first polarity associated with the first magnet, wherein the third magnet is oriented such that the second baseplate has a second polarity associated with the third magnet, wherein the first polarity is a same polarity as the second polarity,
wherein the first polarity of the first baseplate repels a first magnetic flux leakage associated with the second baseplate of the second loudspeaker motor such that the first magnetic flux leakage is redirected towards the second loudspeaker motor, and
wherein the second polarity of the second baseplate repels a second magnetic flux leakage associated with the first baseplate of the first loudspeaker motor such that the second magnetic flux leakage is redirected towards the first loudspeaker motor.

12 more elements

An apparatus, comprising:

a first loudspeaker comprising a first loudspeaker motor;
and
a second loudspeaker comprising a second loudspeaker motor,
wherein the first loudspeaker motor is coupled to the second loudspeaker motor such that an orientation of a first loudspeaker cone of the first loudspeaker opposes an orientation of a second loudspeaker cone of the second loudspeaker,
wherein a first magnet of the first loudspeaker motor is oriented such that a first baseplate of the first loudspeaker motor has a first polarity associated with the first magnet, wherein a second magnet of the second loudspeaker motor is oriented such that a second baseplate of the second loudspeaker motor has a second polarity associated with the second magnet, wherein the first polarity is a same polarity as the second polarity.

2 more elements

A method, comprising:

coupling a first loudspeaker comprising a first loudspeaker motor to a second loudspeaker comprising a second loudspeaker motor,
wherein coupling the first loudspeaker to the second loudspeaker comprises coupling a first baseplate of the first loudspeaker motor to a second baseplate of the second loudspeaker motor such that an orientation of a first loudspeaker cone of the first loudspeaker opposes an orientation of a second loudspeaker cone of the second loudspeaker,
wherein a first magnet of the first loudspeaker motor is oriented such that the first baseplate of the first loudspeaker motor has a first polarity associated with the first magnet, wherein a second magnet of the second loudspeaker motor is oriented such that the second baseplate of the second loudspeaker motor has a second polarity associated with the second magnet, and wherein the first polarity is a same polarity as the second polarity;
providing an electric signal to a first voice coil of the first loudspeaker motor and a second voice coil of the second loudspeaker motor;
repelling, based on the first polarity of the first baseplate of the first loudspeaker motor, a first magnetic flux leakage associated with the second baseplate of the second loudspeaker motor such that the first magnetic flux leakage is redirected towards the second loudspeaker motor, wherein the first magnetic flux leakage is associated with a first magnetic flux generated in part by the electric signal being provided to the second voice coil;
and
repelling, based on the second polarity of the second baseplate of the second loudspeaker motor, a second magnetic flux leakage associated with the first baseplate of the first loudspeaker motor such that the second magnetic flux leakage is redirected towards the first loudspeaker motor, wherein the second magnetic flux leakage is associated with a second magnetic flux generated in part by the electric signal being provided to the first voice coil.

4 more elements

Dependencies are inferred from the claim text.