| 摘要 |
A loudspeaker (1) having a piston resonance frequency (f0) is disclosed. The loudspeaker comprises (1) an acoustic member (4) intended to operation in piston mode and provided with a plate-like body(8), (2) a drive unit (6) for translating the acoustic member along a translation axis (x) oriented substantially perpendicular to a main face (8a) of the plate-like body, and (3) a frame (2) from which the acoustic member is flexibly suspended. The plate-like body is an easy-to-manufacture polycarbonate or polymethylmethacrylate sheet (8') having a first break-up frequency (f1) which is higher than or equal to two times the piston resonance frequency (f0). |
