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摩机,烧友们均认为能改善音质,但音质能改善多少呢?有的人在报刊上大侃“像换了一台新机一样”,“低音有力、泛音丰富”等等,也有人撰文感叹“效果似有耳闻”,“简直怀疑此举的必要性”……。为此,笔者准备来个“眼见为虚、耳听为实”,对自己这台爱特2210CD机大摩一番,辨明“真相”。施行摩机方案如下:首先用7815、7915、LF353等元器件做成一套独立的±15V有源伺服电源,供模拟线路中的运放使用。又分析爱特2210CD机内的滤波输出电路为无限增益多反馈环型二阶LDF,其相位特性不够好,高音听感不尽人意。
Motorcycles, fans all think that can improve the sound quality, but the sound quality can improve how much? Some people in the press Kan “like a new machine the same,” “powerful bass, overtone” and so on, but also some people The author laments “the effect seems to be heard”, “simply doubts the necessity of this move” .... To this end, the author is ready to “see the faint, ears listen to reality”, on their own love this special 2210CD machine some Morgan, identify the “truth.” The implementation of the motorcycle program is as follows: First, with 7815,7915, LF353 and other components made of a set of independent ± 15V active servo power supply for the op amp use in the analog line. Also analyzed Aite 2210CD machine filter output circuit for the infinite gain multiple feedback loop second-order LDF, the phase characteristics are not good enough, treble sense of hearing less than satisfactory.