| 摘要 |
<p>A ring-shaped surround for a loudspeaker diaphragm takes the form of a membrane formed in a shape having, when relaxed, a cross-section comprising a first portion 26 that extends radially outwardly and a second portion 32 that extends axially, at least the first portion having a surface which undulates circumferentially. Alternatively, or in addition, the surround comprises an inner flange 24 and an outer flange 22 and a collar of flexible material extending from the inner flange to the outer flange, and at least one tab 34, 36 extending from the collar transversely thereto. The tabs affect the resonant behaviour of the surround, and can be sized and positioned so as to remedy undesirable resonances without necessarily affecting the geometry of surrounding items.</p> |
