谁说丹拿至尊的两个12寸是一样的？？？

工作状态的不同，导致设计思路的方向各异。

回复 rock 的帖子

我只是纸上谈兵，照搬书上说。《扬声器系统设计手册第七版》美 Vance Dickason著，里面说的很清楚，推挽结构，反相输入，是抵消奇次谐波。等压驱动二个并联单元，电阻减半，电流增加，功率增加，响度提高。
   

搞晕了，哪位大虾有没有相关文献资料发上来给大家了解一下

奇偶谐波的问题只能听大师的忽悠，因为自己没有实验的条件。后面的灵敏度高低，这个比较好理解。等压驱动二只并联单元，相当于二台独立的功放分别驱动各自的单个单元，声音肯定比一台功放驱动一只单元响很多。

更严谨的描述

灵敏度的定义：扬声器单元装在大型障板上，让其向“半空间”辐射，输入1W时在轴向离扬 ...
3l-audio 发表于 2011-9-16 06:56

IEC 60268-5(2003) Sound system equipment Part 5 Loudspeaker


20.3 Characteristic sensitivity in a stated frequency band

20.3.1 Characteristic to be specified
The sound pressure output shall be specified in a stated frequency in accordance with 20.1.1,
referred to an input power of 1 W and to a distance of 1 m on the reference axis.

20.3.2 Method of measurement
Measurements shall be made in accordance with 20.1.2, and they shall be referred to voltage
Up corresponding to a power of 1 W, where Up is numerically equal to the R value and
where R is the rated impedance.

20.4 Characteristic sensitivity level in a stated frequency band –
characteristic to be specified
Twenty times the logarithm of the ratio of the characteristic sensitivity in accordance with
20.3.1 to the standard reference sound pressure (20 μPa) shall be specified expressed in dB.