摘要 |
The enclosure has electromagnetic actuators (5.1 - 5.4) attached to a rectangular shaped diaphragm (2), and external barriers (3.1 - 3.5) attached to the diaphragm, where the diaphragm is made of wood such as spruce, thuja, mahogany, maple or spruce. A power supply unit supplies power to the actuators to activate the diaphragm. An external frame (7) and a square shaped internal frame (8) are attached to one barrier and a cover (12). The frames have a fixation unit (16) i.e. tom holder, to fix the enclosure. The proportions/dimensions of the enclosure relates to the number of gold. The enclosure has width of 890 millimeters, height of 890 millimeters and thickness of 4.5 millimeter. |