In some embodiments, a protective apparatus for rotary control knobs may comprise a cover adapted fit over a rotary control knob; a knob cavity internal to the cover adapted to provide space for the rotary control knob to rotate about; and an access aperture located on the surface of cover member and adapted to provide limited user access to the rotary control knob. The cover member may be configured to encase or surround a control knob. The apparatus may further comprise a plate which may be integrally formed or molded to the cover and which contains a control shaft aperture adapted to receive the control shaft of a rotary control assembly. Once a control shaft is inserted through the control shaft aperture, a fastener may be secured to the control shaft over the plate, thereby securing the apparatus to the control shaft.

In some embodiments, a protective apparatus for rotary control knobs may comprise a cover adapted fit over a rotary control knob; a knob cavity internal to the cover adapted to provide space for the rotary control knob to rotate about; and an access aperture located on the surface of cover member and adapted to provide limited user access to the rotary control knob. The cover member may be configured to encase or surround a control knob. The apparatus may further comprise a plate which may be integrally formed or molded to the cover and which contains a control shaft aperture adapted to receive the control shaft of a rotary control assembly. Once a control shaft is inserted through the control shaft aperture, a fastener may be secured to the control shaft over the plate, thereby securing the apparatus to the control shaft.

The invention relates to an attachment arrangement for the strings of a stringed instrument, especially a guitar. To the body of the stringed instrument is attached a bridge body, first restraining means for restraining the strings from the first end area, second restraining means, which are arranged in conjunction with the bridge body for restraining the strings from the second end area. Lever means are arranged in conjunction with the bridge body in order to move the second restraining means for temporarily loosening and/or tightening the strings by means of a lever part included in the lever means. The lever means are provided with moving means comprising at least one moving mechanism, which is a mechanism separate from the lever means. One or more second restraining means are arranged to move with respect to the bridge body. The moving means are arranged to transmit the movement of the lever means into the desired movement of one or more restraining means.

The invention relates to an attachment arrangement for the strings of a stringed instrument, especially a guitar. To the body of the stringed instrument is attached a bridge body, first restraining means for restraining the strings from the first end area, second restraining means, which are arranged in conjunction with the bridge body for restraining the strings from the second end area. Lever means are arranged in conjunction with the bridge body in order to move the second restraining means for temporarily loosening and/or tightening the strings by means of a lever part included in the lever means. The lever means are provided with moving means comprising at least one moving mechanism, which is a mechanism separate from the lever means. One or more second restraining means are arranged to move with respect to the bridge body. The moving means are arranged to transmit the movement of the lever means into the desired movement of one or more restraining means.

The disclosure provides a sound emitting device includes a housing in which a corner is formed by an inner surface of a first outer wall part and an inner surface of a second outer wall part; a speaker device which includes a sound emitting part that emits a sound toward a main opening formed to penetrate through the first outer wall part and is arranged inside the housing; and a guide that is arranged between the second outer wall part and the speaker device. An auxiliary opening is provided to penetrate through the second outer wall part, and at least a part of multiple auxiliary openings is located at the same position as the sound emitting part in a length direction of the corner, and the guide includes a bottom part that projects from one of the speaker device and the second outer wall part toward the other thereof.

A portable amplifier is disclosed. In embodiments, the portable amplifier comprises a cabinet that opens and closes on a diagonal to contain all internal components, and optimizes sound quality. In embodiments the portable amplifier can be connected to an extension cabinet in order to provide an additional speaker. The portable amplifier can function on AC or DC power, and features user-friendly lighted ports and controls. The amplifier can feature AINiCo speakers and a three-spring reverb tank. The portable amplifier can be optimized for weight and power to achieve output of about 4 to about 5 watts per pound.

A device that can be temporarily attached to a musical instrument and easily detached without permanent modification to the instrument. The device is comprised of a set of controls attached to circuitry that is used to send digital data to a computer or other hardware to be used for music synthesis, manipulation, or production.

A device that can be temporarily attached to a musical instrument and easily detached without permanent modification to the instrument. The device is comprised of a set of controls attached to circuitry that is used to send digital data to a computer or other hardware to be used for music synthesis, manipulation, or production.

A wall-mountable jukebox and cover assembly in which a jukebox chassis is exposed by the cover in a display screen and in one or more payment receptors for pay-for-play payment collection devices. The jukebox chassis and cover are designed to enable the jukebox chassis to detachably slide-on to the cover. Various securing mechanisms and access mechanisms may be configured. The jukebox and cover assembly is configured for use in commercial venues and can be customized to each location.

A wall-mountable jukebox and cover assembly in which a jukebox chassis is exposed by the cover in a display screen and in one or more payment receptors for pay-for-play payment collection devices. The jukebox chassis and cover are designed to enable the jukebox chassis to detachably slide-on to the cover. Various securing mechanisms and access mechanisms may be configured. The jukebox and cover assembly is configured for use in commercial venues and can be customized to each location.