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  1. #1
    Forum Frontman fudd's Avatar
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    Default 5150II bias setting

    Hey guys. I was going to check my bias as I haven't in about 4 years and was wondering what should my bias be at? And what's the max that I can use before it will screw up my tubes.

    I've heard 30mA is about right but has anyone run it hotter and what were the results?


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  2. #2
    Hot For Teacher joezlo's Avatar
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    I used to turn the screw know on my 5150 2 all they way up and just replace tubes all the time. Sounded great -laughs- I guess I'm biased though! But seriously if you have the meter to check them, just make sure they don't glow to the point when they look dangerous.(30mA sounds right) If they do, slowly pull the bias back. If you get matched sets of 6L6's biasing usually doesn't become much of a problem til the tubes are loosing their mojo anyways. -all my bias experience came from trial and error and loss of many 6L6's)

 

 

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