Zaphaudio网站有AT 18H520613SD频响曲线,严格看的话,只有100hz到1.2khz是平直线性的,从1.2K开始阻尼明显变差。
原文评价:
This driver from Skaaning is a custom ordered unit with an underhung voice coil and an "SD" motor with a copper sleeve in the gap. Very solid construction with a well ventilated motor. Very sensitive. Very flat impedance curve. The response curve has a rise in the top end but is controllable. Merely average harmonic distortion considering the motor design. Poor price/performance ratio compared to the competition.