A simple photoelectric system is described in this paper. We choose the optimumdiaphragm through measuring the optical transfer function with different dimensional double ringed diaphragms.
设计了一个简单的光电系统，测量了不同尺寸的双环光阑的光学传递函数，从中选出了最佳光阑。
2
To move the diaphragm, HiFiMan developed a special "asymmetrical magnetic circuit" to get the "optimum balance between high driver efficiency and high sound quality.