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Most Chinese small tubes are weak?

Engineer Lau,the factory owner of Fullmusic told me he was a principal designer of vacuum tubes in my country before 1982.The Chinese 6n11(Ecc88),6n2(or 6n4-the better model of 6n2,usually we use it as ecc82),6n3(5670),6p14(el84) were his masterpiece.
Last week,I asked him:"Why we couldn't manufacture small signal tubes quality as good as power tubes so far?"
He told me:"Plate material."
Maybe somebody still wondering about TJ 300B,PX25,205D....the plate looks like the Pepsi can!The same thing happened to the Chinese 6n11 and 6n2......
If you found the data sheet of those,some data are diffrent with western country tubes.Always,Chinese small signal tubes takes more plate current and worse noise.Mr Lau told me he was try to fix the negative effect when tube become warmer,but carbon covered nickel plate wasn't quite reliable.So......
Chinese small signal tubes are really cheap,but it's not equal to low quality.You'd better to read the data sheet before run on them,good luck.

Maybe my English crappy,but it's my second turn only,see,I got blood on underwear......I'm not a virgin anylonger......


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Topic - Most Chinese small tubes are weak? - hyperma@sina.com 09:28:04 09/29/04 (6)


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