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发表于 2015-9-12 07:22:10
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 三楼的翻译
来自Soldano的解答
Guitar Amplifier Tube Maintenance 吉他音箱电子管保养维护
How do I know if I need to change my tubes? 我怎么知道啥时候该换电子管了？
You probably need to change your tubes if your amplifier makes strange noises (hisses or squeals) or if it experiences a lack of power or a lack of bottom end. 当你的音箱有奇怪的噪音（丝丝声或尖叫声），或者使用的时候声音不给力，或者完全没有低频，都表明应该更换电子管了。
My amp is making strange noises (fizzy crackling sounds or popping noises)? How do I get it fixed? 我的音箱有奇怪的噪音（爆破噪音或者清脆的丝丝声）怎么办？
Most of the problems that we hear about with amps are due to the tubes—and are pretty straightforward to fix. 很多这种噪音来自电子管损伤，而且这个问题很容易检修。
Close to 90% of the problems that people call us about are due to tubes—or tube sockets. 反映这种问题的90%都是电子管问题——甚至只是管座问题而已。
Sometimes they get dirty and mucked up.有时只是因为它们脏了。
(Tubes get very hot and can burn you, of course; don’t touch them when they are hot.)电子管在工作的时候很烫，千万要注意不要烫伤，等它凉了再动手。
With the amp on, wiggle the tubes a little to alter the contact points. 打开音箱，轻轻晃动电子管，使底座和管脚接触上。
If this recreates or stops the noise, you have isolated the problem tube (or socket). 如果这样做会带来/去除噪音，那么恭喜你，找到了症结所在。
If it doesn’t, turn the amp off and let the tubes cool. 如果这样做无效，那么先关机并等电子管冷却。
Then pull and reinsert each tube several times to try to establish better contact. 把电子管重新插拔几次，这样管脚和底座会接触得更好一些。
Test the amp after you adjust each tube to see if you have found the problem.再开机检查每个电子管有没有接触不良。
Hopefully, this will fix the problem or determine the tube that needs to be replaced. 一般来说，这样做都可以解决，或者至少锁定问题在哪。
If you have pinpointed a problem tube, but not fixed it, you probably need to replace the faulty tube.如果你锁定了目标电子管，但是刚才那些步骤又不解决问题，那么也许你应该换新电子管了。
How do I determine if my preamp tubes or my output tubes need to be changed? 我怎么知道是音箱的前级管还是后级管需要更换？
If you’re experiencing a lack of bottom end and power, it’s probably your output tubes. 如果音箱没有低频，一般是后级管需要更换。
If you’re hearing strange sounds coming from your amplifier, turn your gain section up in volume, and slowly turn the master volume down. 如果你发现有奇怪的噪音，可以先把前级音量打开，再慢慢把后级master音量关闭。
If the noises persist after the master volume has been turned down, it’s an output tube.这个过程中如果噪音仍然不变，说明问题出在后级管。
If the noises go away after turning the master volume down, it’s an input tube. 如果噪音消失，那么问题在前级输入电子管。
How often should I change my tubes? 我大概多久更换电子管？
Tubes are like light bulbs—they could go out at any time. 电子管像灯泡，它们会随着时间慢慢损耗掉。
Generally, if you’re playing hard, tube life can be anywhere from six months to a year, although we’ve seen tubes last much longer than that. 如果你使用程度比较高，一般来说半年到一年就需要更换一套后级管，尽管这时候管子表面看起来没事。
Preamp tubes can last indefinitely. 单纯从使用寿命来说，前级管几乎从不需要更换。
Good quality tubes are the key to keeping your amplifier working great. 选用高品质的电子管可以保证你的音箱工作良好。
Should you start to experience strange noises, microphonic squealing, hiss, or other strange and unwanted phenomena, check your preamp tubes. 如果发现音箱有奇怪的噪音，严重的Mic效应，以及尖叫声或者丝丝声等现象，那么应该检查前级管。
One of them may need replacement.也许某支前级管需要更换。
If strange noises do appear, unplug your guitar cord from the input to help isolate the problem and switch to the Overdrive Channel. 先把吉他和连接线都拔掉，把音箱打到过载通道。
Then, turn the Overdrive Channel’s Volume Control to ‘0.’ 把该通道的音量设置到零。
If the noises go away, it is likely that a preamp tube is at fault. 如果这个时候噪音消失，那么问题来自前级管。
If the noises persist, you probably have an Output tube that needs to be replaced. 如果还有噪音，说明你应该更换后级管了。
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