Crazy Guyitar/Crazy pots 疯了的电位器

roadhouse

Crazy Guyitar/Crazy pots  疯了的电位器
http://bbs.guitarschina.com/viewthread.php?tid=248081&highlight=%B5%E7%CE%BB
___蝎之狂舞
___A代表linear，B代表log
___说反了，那只是欧洲标准
___其他地方A对数，B线型（包括中国，美国，日本），乐器产品里几乎都是这标准  
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http://sound.westhost.com/pots.htm
___Pot Markings
___Now, this should be dead easy - a simple code to indicate the resistance and law of a pot
___should cause no grief to anyone, right?  Wrong!  It wouldn't have been so bad if someone
___hadn't decided to change it, and even then, it wouldn't have been so bad if there was no
___overlap between the "old" and "new" "standards" ... I think you can see where this is headed by now.
___  Taper       Old Code  New Code  Alternate
___  Linear          A         B       LIN
___  Log (Audio)     C         A       LOG
___  Antilog         F        N/A      N/A
___Wasn't that a nice thing to do?  It is obviously important to check before you make assumptions,
___or you can easily get the wrong type - especially if working on older equipment.
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http://bbs.guitarschina.com/viewthread.php?tid=413061&highlight=%B5%E7%CE%BB
___riffriff
____拆开我日产RG470来研究，结果发现日产470里面用的也是“ALPHA”牌子的电位器，
____型号是D500K，音量和音色两只都是
___上述内容来自网络。
___经搜索，发现  fender.com   dimarzio.jp 里面卖的电位器已经不再分TONE/VOLUME，
___就是说都用同一样的电位器，理解为TONE中那个电容的作用远大于使用那种类型的电位器。
___如果是这样的话，我估计D/W   应该都是A/LOG  的
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seymour duncan
___Most passive guitars use 250K (Fenders), 500K (Gibson) and 1Meg. Audio Taper Potentiometers (Misc. Guitars).
根据  http://www.angelfire.com/electronic/funwithtubes/Amp-Volume.html
Audio Taper Potentiometers  应该是LOG
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下面问题来了   http://www.ibanez.com/wiring/models.asp?t=e
看了好几个图
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IBANEZ  好象一直用  LINE  做VALUME   LOG  做TONE
**********************************************
它使用的表示有
TONE       D---A----C---LOG
VOLUME     W---B--------LINE----G
例  http://www.ibanez.com/wiring/wire.asp?y=2000&w=RG470
    http://www.ibanez.com/wiring/diagrams/2005/JEM7.pdf
有兴趣的不仿多看几个图
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我的看法，
传统的用老方法  VOLUME --  LOG
现代的          VOLUME --  LINE   
TONE  随便    使用任何POT前先确定是那一种，如果觉得不对味就换另一种
顺便说一下很多人问的POT值，不说主动的，只说被动的PICKUP 100K ~  1M
一般认为阻值越低，高频就会减少得越多（如果你的PICKUP本来高频就不多，显出来的可能性就很少）

欢迎指正

[ 本帖最后由 roadhouse 于 2007-1-5 18:11 编辑 ]

速度30

沙发`````

不再摇滚

楼主研究的太细了，结果把我给弄糊涂了，从前记的都弄混了！

ironlung

如果不确定，那万用表量量就知道了。如果是网上定购，可以先问清楚。要是音量用了线性的可不好玩了。

roadhouse

http://www.guitarelectronics.com/category/wiringresources.1basicwiringfaqs/

What is the difference between Audio and Linear taper pots?

Audio and Linear taper pots have the same total resistance but differ in which position of rotation the pot will reach the 50% value. Linear pots  are usually marked with a B or Lin (examples 250KB, B250K, 250K Lin) and will reach 50% of its total resistance in the 50% rotation point. Audio taper pots are usually marked with an A or Aud (examples 500KA, A500K 500K Aud) and will decrease most of the resistance in the last 50% of the rotation. This can give a more gradual audio reduction is some cases. Most manufactures and builders either use Audio taper pots for volume and tone or  linear for volume and audio for tone. However, if a problem of exists where a volume or tone pot has no effect on the sound, try a changing the taper. How to check the taper with an ohm meter: Set the pot to the center position (50% rotation) and measure the resistance between the center pin and each of the outer pins. If the the resistance is equal (50% of the pots value) the pot is linear. If the values are not equal, the pot is an Audio taper.

[ 本帖最后由 roadhouse 于 2007-1-5 22:35 编辑 ]

steve_li

:Q :Q :mad: :mad:

tensu917

这么好的帖子是值得挖坟的！！！！！！！！！！！！！！！

PTF@

能买到么？