installing new tubes

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AdamRagland
AdamRagland Posts: 521
edited March 2008 in Electronics
a friend of mine is installing new tubes on his tube amp for his bass. another friend of mine said he thought you were supposed to prep them before installing them or they will blow very soon. is this true or is he smoking crack?
Post edited by AdamRagland on
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  • dragon1952
    dragon1952 Posts: 4,941
    edited March 2008
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    He probably read something online like this regarding the use of surplus (old) tubes. Not sure everyone would necessarily agree with this, I think it's just someones theory.
    http://www.nd2x.net/tube-prep.html
    2 channel - Willsenton R8 tube integrated, Holo Audio Spring 3 KTE DAC, audio optimized NUC7i5, Windows 10 Pro/JRiver MC29/Fidelizer Plus 8.7 w/LPS and external SSD drive, PS Audio PerfectWave P3 regenerator, KEF R3 speakers, Rythmik F12SE subwoofer, Audioquest Diamond USB cable, Gabriel Gold IC's, Morrow Audio SP5 speaker cables. Computer - Windows 10/JRiver, Schiit Magni 3+/Modi 3+, Fostex PMO.4n monitors, Sennheiser HD600 headphones
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  • dorokusai
    dorokusai Posts: 25,637
    edited March 2008
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    The must be installed while naked and strapped, by leg irons, to an 18ft ground rod.

    Just ensure the pins and sockets are clean.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • zingo
    zingo Posts: 11,258
    edited March 2008
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    I heard the best way to do this is to install the tubes with the amp already on. :p

    I also like the "a friend of mine".
    Jake
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  • sda2mike
    sda2mike Posts: 3,131
    edited March 2008
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    colombian gold:cool:
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  • mulveling
    mulveling Posts: 505
    edited March 2008
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    Perhaps he was referring to tube biasing? Only amps that need to be biased, need biasing with a new set of output tubes. Failure to do so could result in premature tube death.
    Tannoy Dimension TD10, SOTA Star Sapphire, Heathkit W4A's, McIntosh MC2100, Eddie-Current Zana Deux, Singlepower SDS, Sennheiser HD650, Audio-Technica L3000, Sony Qualia 010
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  • dorokusai
    dorokusai Posts: 25,637
    edited March 2008
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    Perhaps.

    You need to bias with a tube installed and if you change them, you should certainly re-bias them. This is covered in every user manual on the planet and if you don't understand this without a manual....you shouldn't own a tube amplifier.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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