Prior to the introduction of this standard, the wiring of pins 2 and 3 varied. The pin 2 "hot" and pin 3 "cold" convention was typically used by European and Japanese equipment manufacturers, but American companies used pin 3 "hot" and pin 2 "cold". This caused problems when interconnecting equipment with unbalanced connections. The pin 3 "hot" convention is now obsolete but is still found on vintage equipment. Pin 1 has always been ground and/or shield if the cable is shielded, and many connectors connect it internally to the connector shell or case. 作者: 合肥蒋鹏 时间: 2012-11-29 10:21
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小弟在hifi168的发言很不严谨,应该向烧友们致歉。关于抗侧滑的问题,我只是想说一个现象,就是很多时候去掉抗侧滑会有更为活泼的声音,建议烧友们试试,后来就演变成斗嘴了。真正严谨的做法还是要精调抗侧滑的,但或许烧友们的调整经验不到,或者产品设计问题,很多时候加了抗侧滑反而会恶声,但矛盾总有其两面性,在一套得到精密调整的系统上想办法把加了侧滑的负面效果去掉才是正道。
至于那个实验,我想应该还是蛮客观的,有烧友讲纹路或者说是唱纹侧壁的问题,但从力学分析的角度,两个侧壁成90度夹角,其水平方向的力互相抵消,合力是指向正上方,简化分析就是跟在LD唱片上的受力图一样。