| 摘要 |
<p>An arrangement in loud speakers comprises a driving means (7) for transforming electrical oscillations into mechanical ones. The driving means which may consist of a voice coil, is connected to at least one acoustical first diaphragm (1), so that its kinetic energy is propagated to the diaphragm and transformed into sound energy. The edge (6) of the diaphragm (1) is of an oblong rounded shape. The driving means (7) is connected to the diaphragm at a driving area (3) which, projected perpendicularly to the edge plane of the diaphragm, is situated laterally of a first reference line (13) connecting the two maximally distant points (11, 12) of the edge line, and also laterally of a second reference line (16) which perpendicularly intersects said first reference line midway between said points, so that said two lines (13, 16) divide the edge plane into four quadrants, one of which comprises said driving area (3).</p> |
