Abstract: A shock absorbing and magnetic levitating cushion used as a supporting pedestal for an audio-video equipment, the cushion including a housing, two mutually excluded annular magnets, a magnetic conductive member and a cover. The housing has two annular magnets mutually excluded and opposite to each other, and has a magnetic conductive member filled with material of high specific weight. The housing is covered with a cover. According to the principle of mutual exclusion between two poles of two magnets of identical polarity, the two annular magnets undergo a magnetic-levitating phenomenon and are provided therebetween with a space for movement, and the magnetic levitating cushion gets an effect of shock isolation and shock absorbing.

Abstract: A shock absorbing and magnetic levitating cushion used as a supporting pedestal for an audio-video equipment, the cushion including a housing, two mutually excluded annular magnets, a magnetic conductive member and a cover. The housing has two annular magnets mutually excluded and opposite to each other, and has a magnetic conductive member filled with material of high specific weight. The housing is covered with a cover. According to the principle of mutual exclusion between two poles of two magnets of identical polarity, the two annular magnets undergo a magnetic-levitating phenomenon and are provided therebetween with a space for movement, and the magnetic levitating cushion gets an effect of shock isolation and shock absorbing.

Abstract: A bulb type speaker structure mainly comprises a speaker, a circuit board, and a case body. The circuit board is lodged inside of a housing of said case body. Leads connect an inside conductor and an outside one of a joint of the case body to an AD adaptor of the circuit board respectively. The speaker is set in the remaining space inside the housing and connected to an amplification circuit of the circuit board with leads. A safeguard combined to the opening of the housing can seal and form the bulb type speaker structure. Such bulb type speaker can be easily connected with a bulb holder through the joint of the case body so as to perform its facility and maneuverability of installation without additional stands.

Abstract: A transformer of power-amplifier module for an audio device includes a casing having a first plug and a second plug formed thereon. In the casing, there is an amplifying circuit having an input electrically connected to the first plug and an output electrically connected to the second plug of the casing. The amplifying circuit terminates in a transformer at the output. Furthermore, the transformer is adjustable so as to control the amplitude of output voltage of the transformer of power-amplifier module.

Abstract: A bulb type speaker structure mainly comprises a speaker, a circuit board, and a case body. Said circuit board is lodged inside of a housing of said case body. Leads connect an inside conductor and an outside one of a joint of said case body to an AD adaptor of said circuit board respectively. Said speaker is set in the remaining space inside said housing and connected to an amplification circuit of said circuit board with leads. A safeguard combined to the opening of said housing can seal and form the bulb type speaker structure. Such bulb type speaker can be easily connected with a bulb holder through the joint of said case body so as to perform its facility and maneuverability of installation without additional stands.

Abstract: A pre-embedded in-wall speaker seat comprising a frame of the speaker and a plurality of brackets, in which, by insertion of engaging hooks on the external peripheral surfaces of the middle sections of the brackets into engaging recesses to hook the inner edges of the engaging recesses, protrusions on these peripheral surfaces of the middle sections of the brackets can be inserted into some engaging grooves in passing to make engagement and positioning of some positioning ribs with some positioning recesses. Thereby, the pre-embedded in-wall speaker seat is completed.

Abstract: A transformer of power-amplifier module for an audio device includes a casing having a first plug and a second plug formed thereon. In the casing, there is an amplifying circuit having an input electrically connected to the first plug and an output electrically connected to the second plug of the casing. The amplifying circuit terminates in a transformer at the output. Furthermore, the transformer is adjustable so as to control the amplitude of output voltage of the transformer of power-amplifier module.