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Showing 1 of 1068 conversations about:
rjley
12
Jan 9, 2021
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TUNG-SOL 6SN7GTB Hi Everyone, I'm on the 96th hour and still hum in left ear. Will it ever go away? What should I do? Thinking of going back to the stock 6SN7. Are there other tubes that don't hum when you first get them that are upgrades?
(Edited)
Jan 9, 2021
Syphy
6
Jan 21, 2021
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rjleyJust remove the power tube and let it burn in for around a week straight, the hum should be gone to an inaudible level then. Had the same issue with the same tube.
Jan 21, 2021
rjley
12
Jan 21, 2021
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SyphyYeah, took me like a week at least but now thank God it's gone!
Jan 21, 2021
Desync
2
Jan 27, 2021
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rjleyI'm 5 days / about 90 hours in, was about to return it but if it went away for you I guess there is still hope :p
Jan 27, 2021
Syphy
6
Jan 27, 2021
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DesyncYeaaah.. was also quite disappointed at first, but some 6sn7 tubes are veeery sensitive to the heater voltage they are getting, plus there isnalways some leftover gas and particles inside the tube, which you have to burn..
Jan 27, 2021
Desync
2
Jan 27, 2021
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SyphyMight be worth just getting NOS 6SN7 tubes, since I'm pretty sure old manufacturers would burn them in before selling.
Jan 27, 2021
Syphy
6
Jan 27, 2021
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DesyncNOS(New old stock) is factory new, its not burned in at all
Jan 27, 2021
Desync
2
Jan 29, 2021
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SyphyFactory new, but I'm pretty sure I read that part of the "manufacture" involved burning in to get rid of or reduce hum
Jan 29, 2021
RVDIII
70
Feb 6, 2021
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rjleyTry cleaning the tube contact pins....and pray!
(Edited)
Feb 6, 2021
mcknig.k
83
Feb 19, 2021
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Feb 19, 2021
Sweetwilliam
18
Jul 18, 2021
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mcknig.kI read somewhere on the internet that the DV is designed for European power supplies. Used in N America the DV produces the hum in the main. My DV in UK sounds fine with no hum.
Jul 18, 2021
danny87
556
Jul 19, 2021
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SweetwilliamI read that somewhere too. My DV on 240v power supply didn't have any hum with stock tubes. But on the Tung Sol 6SN7GTB it hums really bad on the right channel.
Jul 19, 2021
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