| 摘要 |
The system has suspensions (3, 4) for symmetrically suspending a membrane (1) designed as a woofer membrane, where the membrane has a tweeter (5). The membrane has a thickness of more than 10 percentages of a diameter of the membrane, and the tweeter is arranged in an inner side of a magnet system, where 50 percentages of rearward main radiation of sound takes place through the inner side. An area of a corrugation of the membrane is formed through elastic foam material, where the membrane is made from aluminum, aramid fiber or Nomax (RTM: flame resistant meta-aramid material). The magnet system has magnets that are designed as samarium-cobalt magnets, cerium-cobalt magnets, aluminum-nickel-cobalt magnets, ferrite-magnets and neodymium-magnets. |
