This configuration offers the widest frequency response ( lf is improved as the transformer is looking at a lower resistance than the anode resistance alone , and there is no parallel inductance to limit the lf 這一結(jié)構(gòu)可以得到最寬的頻響(變壓器所看到的電阻比屏阻低很多,從而提升了低頻點(diǎn),而且電路中沒有并聯(lián)電感來約束低頻頻響。