boeing 在 2004-3-22 12:47:00 发表的内容 回开心果: 我想我的动手能力还是可以的,从CD机到音箱包括线材我都曾经自治过。我是学航空机械的,电子方面很多都是知道的比较肤浅,但我想你把大致的方法告诉我还是差不多的。 仪器和工具我们单位有一部分,估计信号发生器不易搞定不知道能否借到。但我还是想知道具体的测试方法的。一起只是听说自己可以测量. 回madog: 我现在只能知道上面附图的一些参数,其他要问厂家,很困难。 Qms是等效震动质量吗?Qes是什么?不好意思:( 以前似乎见过这两个参数,但三年多没玩了,已经忘的差不多了。 多谢了:) |
Qms is the mechanical Q of the driver
Qes is the electrical Q of the driver
Qts is the total Qof Qms and Qes.
There are other T/S ( Theil and Small ) parameters which is necessary to
calculate the box volume. Others are,
Fs Resonance frequency of the driver in free air
Re DC resistance of voice coil
Le Inductance of the voice coil ( usually at 1K Hz )
Z Impedance of the driver
Sd Volume of the cone
Dia Diameter of the cone
If you could provide these parameters, then I can calculate the box
volume both in vented box and sealed box and of course x'over.
Look at the information on you post, the best crossover frequency is at
2.2k Hz to avoid the peak from the woofer and the roll off of the tweeter.
You can call the manufacturer to ask for those parameter and I think it is
silly not to supply these data to user as this doesn't make sense or
insufficient to design a box. They should know it.