Accessories to improve the tonal qualities of a guitar or other stringed instruments include a bridge sound plate, a bridge support, a stress tube, and one or more bridge pin bolts. A bridge pin bolt may include a head, a shank, a thread, and a nut, the head of the bridge pin bolt having a void therethrough extending from a front of the head to a back of the head to receive a guitar string therethrough, the void extending upwardly from the front of the head to the back of the head. One or more of the accessories may be formed of brass or another material with good tonal properties. A sound plate may be adjustable or tunable. The accessories may be used independently, or may be used together as a system of accessories.

A device for use in combination with a musical snare drum for altering the sounds produced consisting of a means for affixing the device to the drum, such as a bracket assembly, mounted on the upper and lower rims of the drum, connected to the bracket assembly is a flexible banding which extends around the top, sides, and bottom of the drum and is attached in a manner that allows for ease of movement along the long axis of the banding so that it can be adjusted by sliding along said axis, a muffler component composed of a felt pad or other suitable material is affixed to the flexible banding and positioned on the bottom of the drum in a manner that provides for the muffler to be repositioned at varying degrees of contact with the snares by advancing or retracting the banding so as to alter the tonal output.

An acoustic variable porting system includes an acoustic element and an acoustic variable porting element forming a port into the acoustic element. The acoustic variable porting element is adjustable between at least an open position, in which the port is generally open, and a closed position, in which the port is generally closed. The acoustic element may be at least one of: a sub-kick, a ported drum, and a speaker.

A drum includes a low volume drum head, a pellet chamber, and a magnetic choke. The pellet chamber is located beneath the low volume drum head. The pellet chamber is configured to hold a plurality of pellets, and the pellet chamber defines a plurality of apertures in a wall of the pellet chamber. The magnetic choke carries at least one magnet. The magnetic choke is configured to move relative to the pellet chamber so as to adjust a magnetic force imparted on the pellet chamber.

A device for use in combination with a musical snare drum for altering the sounds produced consisting of a means for affixing the device to the drum, such as a bracket assembly, mounted on the upper and lower rims of the drum, connected to the bracket assembly is a flexible banding which extends around the top, sides, and bottom of the drum and is attached in a manner that allows for ease of movement along the long axis of the banding so that it can be adjusted by sliding along said axis, a muffler component composed of a felt pad or other suitable material is affixed to the flexible banding and positioned on the bottom of the drum in a manner that provides for the muffler to be repositioned at varying degrees of contact with the snares by advancing or retracting the banding so as to alter the tonal output.

The invention relates to a percussion instrument having at least two tone bars, each with an upper and lower side and at least one resonance box with at least one resonance body, wherein the resonance body consists of a neck and a resonance chamber.

A drum includes a low volume drum head, a pellet chamber, and a magnetic choke. The pellet chamber is located beneath the low volume drum head. The pellet chamber is configured to hold a plurality of pellets, and the pellet chamber defines a plurality of apertures in a wall of the pellet chamber. The magnetic choke carries at least one magnet. The magnetic choke is configured to move relative to the pellet chamber so as to adjust a magnetic force imparted on the pellet chamber.

Provided is a percussion instrument including a substantially cylindrical barrel and a weight fixed to the barrel. More specifically, a plurality of weights 5A to 5D may be provided on the inner circumferential surface of a shell 2 of a drum 1 (a percussion instrument). The weights 5A to 5D may be provided at positions where the weights 5A to 5D have four-fold rotational symmetry in the circumferential direction of the shell 2. The weights 5A to 5D may be each provided between lugs 3 that are provided adjacent to each other on the outer circumferential surface of the shell 2.

The invention relates to a percussion instrument having at least two tone bars, each with an upper and lower side and at least one resonance box with at least one resonance body, wherein the resonance body consists of a neck and a resonance chamber.

The invention relates to a drum and to a device (1) therefor, having a system (3) for altering the attack and decay behavior, in particular the note length of the drum (2). The aim of the invention is to provide a device for a drum and a drum having such a device, which can alter the attack and decay behavior quickly and with little effort, and in particular enables setting of the note length and also of the timbre of the drum largely independently of the pitch. This aim is achieved in that the system (3) is fastened to the drum (100, 2) and has a clip (5) on which an adjustable connecting element (6) is arranged, which is designed for a connection to a support arm or to a base support (7).