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Old 7th April 2010, 08:39 AM   #1
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Default Tubelab SE Trimmer

Dear All,

I am thinking of mounting the trimmers of the Tubelab SE on the lower side of the board, opposite to the sockets. Do you think this could cause any problem ?

Better ask :-)

Thanks,

Davide
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Old 7th April 2010, 02:37 PM   #2
rknize is offline rknize  United States
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It will work fine. Just remember their directions will be reversed. On top, CW is more bias and CCW is less. On the underside, the opposite will be true.
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Old 8th April 2010, 09:50 AM   #3
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I always wanted to ask: how often do you check/adjust the bias of the tubelab ?

Thanks,

Davide
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Old 8th April 2010, 01:44 PM   #4
rknize is offline rknize  United States
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When new tubes are installed, I keep an eye on it for the first few hours of operation. Once it seems like they have settled, they should stay put for 100s of hours of use. Some tubes are more fickle than others. The Shuguang 300Bs seem to like to drift upward over time.
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Old 8th April 2010, 03:33 PM   #5
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Quote:
Originally Posted by Nikon1975 View Post
I always wanted to ask: how often do you check/adjust the bias of the tubelab ?
It's checked every time my TSE is turned on. For me it's easy because I installed bias meters.
My Shuguang 300B hasn't changed after about 48 hours of use.

Last edited by Evenharmonics; 8th April 2010 at 03:38 PM.
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