富盛 - 2021/9/17 23:21:18
对于96年版的300B,STEREOPHILE的原文如下
happened to meet Western Electric's owner/director, Charles Whitener, at the London HiFi Show last September. I told him about our amazement when we found out that the WE tubes clearly needed more hours of burn-in than the others; and about our confusion over the first pair of WEs, which were supposed to have been burned-in at the factory but didn't sound right until after we'd given them another 200 hours. Whitener confirmed our guess: Other than a standard 24-hour test, the first pair of WEs hadn't been burned-in at all. WE never does that. (The guy who told me that they do no longer works at WE.)
Whitener also explained to me why WE tubes take a longer time to break in than other brands. As in all other makes, the coating (footnote 1) on a WE300B's heater contains barium oxide and strontium oxide, but WE does not add the usual small amount of calcium oxide. The calcium acts as a kind of pep pill in activating the barium, meaning that calcium-doped 300Bs reach their peak rather quickly, within 100-200 hours, and thereafter (according to Whitener) degrade slowly. Though the WE takes considerably longer to reach its top level of performance, its absence of calcium is said to maintain that high level over the tube's entire lifespan.
As of now, Western Electric suggests a minimum of 500 hours' burn-in, that recommendation to be included in their future literature.—Peter van Willenswaard
富盛 - 2021/9/17 23:24:54
根据Charles所说，西电复产的300B需要200-300甚至500小时后才会完全激活。不过由于使用时间超过4万小时，这几百小时的磨合期真的不算什么。
记得在购买后90天内把附带的质保申请填好并用回邮信封寄回美国的西电工厂激活5年保用服务。
But if you want the best, there's only the Western Electric.
stereophile Peter van Willenswaard 如是说
西电300B随管的保用证都把保用条款写清楚的了。把使用机器的品牌型号，购买日期等细节填好，有一个回邮信封的。
夏日严严 - 2021/10/7 21:41:56
极品胆管，价格不菲啊:strong:
皇家芭蕾 - 2021/10/15 13:23:02
不知新出的效果如何？买过的兄台请讲讲
shizhenhong - 2021/10/15 22:37:35
我看香港的hifi论坛那边都是4个一起买，胆管颜色好靓啊
fellg - 2022/1/10 23:19:26
"西电复产的300B需要200-300甚至500小时后才会完全激活",这个是望而却步的原因吧？耳朵收货不灵了
化外村民 - 2022/1/10 23:29:10
97年去美國的時候，還可以買到老版的西電300B，好像那時候一對要400還是800美金？那時候汽油68仙1誇脫。
虚拟.现实 - 2022/1/11 21:52:04
败走麦城，可惜 ，可叹 ，希虚…
