Abstract: An audio loudspeaker with an internal magnet geometry motor having a slotted cylinder having closed ends, a pair of oppositely charged magnets sandwiching a top plate and disposed between the closed ends of the cylinder, and a diaphragm assembly having a bobbin with spokes which extend through the slots. Mechanically connecting to the voice coil radially through the cylinder enables the lower suspension component to be places much lower and farther from the upper suspension component, improving stability of the suspension. The closed ends of the motor provide extremely low magnetic reluctance for the magnetic circuits at the respective ends of the motor.
Type:
Application
Filed:
August 23, 2009
Publication date:
February 24, 2011
Applicant:
Plastoform Industries Ltd.
Inventors:
Edward Ku, Richard Louis Weisman, Chun Hua Li
Abstract: Magnetic means for detachably and rotatably connecting components in an audio speaker system which comprises a transmitter module securely disposed in a power and/or signal source of the audio system and a corresponding receiver module securely disposed in a power and/or signal receiving means of the audio system, each of the transmitter module and the receiver module comprises a ring-shaped magnetic body, a first electrically insulated layer, a conductive pin, a conductive plate, a second magnetically insulated layer and a bracket, wherein the transmitter module has a first polarity at the front wall of the magnetic body thereof and a second polarity opposite to the first polarity at a front end of the bracket thereof, and the receiver module has the second polarity at the front wall of the magnetic body thereof and the first polarity at a front end of the bracket thereof, and the magnetic body and the bracket of the transmitter module have the same diameter as those of the receiver module, so that when the
Abstract: A speaker includes a main housing, a pair of extension housings extending telescopically from respective opposed ends of the main housing and each having two speaker drivers therein that are concealed by the main housing when the extension housings are retracted and exposed when the extension housings are extended.