Abstract: A sound and light control apparatus includes an audio signal input terminal for receiving an audio signal, a voltage dividing circuit electrically connected to the audio signal input terminal for dividing the voltage of the audio signal into two divided voltages, a control knob electrically connected to the voltage dividing circuit for adjusting the divided voltages, at least one audio signal output terminal electrically connected to the voltage dividing circuit and at least one loudspeaker for transmitting one divided voltage to the loudspeaker, a frequency-divider crossover circuit electrically connected to the voltage dividing circuit for filtering the other divided voltage according to a plurality of different audio frequencies to generate corresponding frequency division voltages, and transmitting each frequency division voltage to a corresponding frequency division voltage output terminal electrically connected to a light emitting diode and enabling the light emitting diode to produce light correspondin

Abstract: A wheel hub for attaching to a vehicle includes a hydraulic engine received in a hub shell and attached or secured to the vehicle, for allowing the hub shell to be rotated relative to the hydraulic engine and the vehicle. The hydraulic engine includes a rotatable spindle, and a coupling device coupled between the spindle of the hydraulic engine and the hub shell, to allow the hub shell to be driven or rotated by the hydraulic engine. A plate and a casing are rotatably received in the hub shell, to rotatably support the hydraulic engine in the hub shell with the plate and the casing. A directional control device may be used to control rotational movements between the spindle of the hydraulic engine and the hub shell.

Abstract: The present invention is to provide a speaker cabinet comprising a hollow case in which a top and a bottom thereof both are wavily tapered from a pair of opposite edges of a front opening to a rear thereof. By utilizing the wavy, rearward taper design of the top and the bottom, a ratio of an area of the opening to an area of the rear is increased. Thus, air inside the case will be compressed rearward when a diaphragm of a woofer vibrates. Next, the compressed air will quickly flow toward the rear along the wavy, rearward taper inner surfaces of the top and the bottom. As a result, air dynamic at the rear is higher and stronger low-frequency resonance of the cabinet can be generated.

Abstract: A wheel hub for attaching to a vehicle includes a hydraulic engine received in a hub shell and attached or secured to the vehicle, for allowing the hub shell to be rotated relative to the hydraulic engine and the vehicle. The hydraulic engine includes a rotatable spindle, and a coupling device coupled between the spindle of the hydraulic engine and the hub shell, to allow the hub shell to be driven or rotated by the hydraulic engine. A plate and a casing are rotatably received in the hub shell, to rotatably support the hydraulic engine in the hub shell with the plate and the casing. A directional control device may be used to control rotational movements between the spindle of the hydraulic engine and the hub shell.

Abstract: The present invention relates a speaker having a diaphragm around the rim of a frame on the speaker for disposing a magnetic member at the center of the diaphragm along the direction of a resonant space enclosed by the diaphragm and the frame. When a winding in the center of the frame is excited, the resonant space generates varying magnetic lines and an attraction-repulsion effect is generated in the center of the winding or a reserved space at the position of the periphery to vertically slide the magnetic member and cause the diaphragm to vibrate and generate sound. The present invention can effectively reduce the space occupied by the components such as the seat, core, and magnetic member, and greatly reduce the thickness of the speaker.

Abstract: The present invention is to provide a speaker cabinet comprising a hollow case in which a top and a bottom thereof both are wavily tapered from a pair of opposite edges of a front opening to a rear thereof. By utilizing the wavy, rearward taper design of the top and the bottom, a ratio of an area of the opening to an area of the rear is increased. Thus, air inside the case will be compressed rearward when a diaphragm of a woofer vibrates. Next, the compressed air will quickly flow toward the rear along the wavy, rearward taper inner surfaces of the top and the bottom. As a result, air dynamic at the rear is higher and stronger low-frequency resonance of the cabinet can be generated.

Abstract: The present invention relates a speaker having a diaphragm around the rim of a frame on the speaker for disposing a magnetic member at the center of the diaphragm along the direction of a resonant space enclosed by the diaphragm and the frame. When a winding in the center of the frame is excited, the resonant space generates varying magnetic lines and an attraction-repulsion effect is generated in the center of the winding or a reserved space at the position of the periphery to vertically slide the magnetic member and cause the diaphragm to vibrate and generate sound. The present invention can effectively reduce the space occupied by the components such as the seat, core, and magnetic member, and greatly reduce the thickness of the speaker.

Abstract: The invention is to provide an electronic apparatus for adjusting brightness and flashing of lights in response to audio signals, which comprises at least one set of frequency-divider crossover network or protection circuit being in series or parallel for receiving output audio signals from a sound source and converting the audio signals having different frequencies or a full-frequency range into different current signals which are in turn outputted to at least one coupled source unit of light and drive the source unit of light to automatically adjust brightness and flashing of light in response to frequency of the audio signals.

Abstract: A speaker and the manufacturing method thereof is disclosed wherein a diaphragm is enclosed by the peripheral frame, a resonant space is in the center enclosed by frame and diaphragm, and a winding is around a center seat. Winding is excited to generate varying magnetic lines for generating a continuous attraction-repulsion effect in the magnetic member when an electric current is flowed through, thereby vertically sliding the magnetic member to cause the diaphragm to generate sound. This can significantly reduce the thickness, simplify assembly, reduce manufacturing cost, increase the travel of diaphragm, significantly enhance the low-frequency characteristics, and increase power of speaker.

Abstract: A speaker and the manufacturing method thereof is disclosed wherein a diaphragm is enclosed by the peripheral frame, a resonant space is in the center enclosed by frame and diaphragm, and a winding is around a center seat. Winding is excited to generate varying magnetic lines for generating a continuous attraction-repulsion effect in the magnetic member when an electric current is flowed through, thereby vertically sliding the magnetic member to cause the diaphragm to generate sound. This can significantly reduce the thickness, simplify assembly, reduce manufacturing cost, increase the travel of diaphragm, significantly enhance the low-frequency characteristics, and increase power of speaker.