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How to Bias a Tube Amp Part 2

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Uploaded by on Apr 29, 2010

This is part 2 of a simple video on how to bias a tube amp

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Music

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  • @QAeternus oops! =) sorry

  • @nerguss He asked rectifier tubes not power tubes.

  • 'voltage'? I thought you were measuring current?

  • ive got a question of the valves possition according of their ratting for example: ive got two pairs of 6l6 Groove Tube, one pair is from rating 3 and the other pair is from rating 2 so i dont know in what possition should i put them A or B:

    possition A: 1st 2nd 3rd 4th 2 3 2 3

    or...

    possition B: 1st 2nd 3rd 4th 2 3 3  2

    please answer!! thx! :)

  • Much enjoyed, I learned a lot from your series! Thank you for stressing caution during everything, I feel better about having someone more experienced do the job for me.

  • great !

    

  • @MetalFTWin No. Those are fuses. They protect your machine from power surges. Marshall power amps usually have what looks like a cube with a small slot for a flat head in it inside the circuit board.

  • @MetalFTWin It's inside the amp. looks like he describes it.

  • I have a Marshall 9100, and on the back it says "Mains Fuse" and "HT Fuse" which has a flat screwdriver slot. Is this the biasing? 

  • I think you mean milliamps. 35 milliamps of plate current.

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