Stupid tube tricks

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Comments

  • amulford
    amulford Posts: 5,020
    edited July 2009
    Man, that just plain blows... they don't make 'em like that no more...
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  • tonyb
    tonyb Posts: 32,967
    edited July 2009
    K-Y jelly and tubes...a big no no.:eek::p

    Sorry Jess,couldn't resist.
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  • F1nut
    F1nut Posts: 50,565
    edited July 2009
    more likely, pissing off B+.

    Yeah, like that.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • lelananh
    lelananh Posts: 2
    edited August 2009
    Thanks so much for sharing the post.



    gratuit pour mobile sonnerie portable mp3 - Sonnerie portable MP3 est en effet un pouvoir de l'innovation technologique.
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  • heiney9
    heiney9 Posts: 25,165
    edited August 2009
    The above has hidden script..................REPORTED
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • mmadden28
    mmadden28 Posts: 4,283
    edited August 2009
    george daniel wrote: »
    come on,, keep em' coming,, we've all done things to tubes,,that we may not be proud of,, now is the time and opportunity to confess,, all will be forgiven by the Great Tube,, but hurry,,as this window will close soon,,, I am the undisputed "KING" of the Master Bias.

    OK well, there was this time once with a tube and a gerbil and a visit to the ER...oh wait a minute ... nevermind--wrong kind of tube...carry on. :o:eek:
    ____________________
    This post is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.

    HT:Onkyo 805, Emotiva XPA-5, Mitsu 52" 1080p DLP / polkaudio RTi12, CSIa6, FXi3, uPro4K
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  • Midnite Mick
    Midnite Mick Posts: 1,591
    edited August 2009
    I once turned up my system without allowing the tube ample warm up.....not pretty. The tube burned out and very thick smoke came from one of the amplifiers. Very scary to me.

    Regards,
    Mike
    Modwright SWL 9.0 SE (6Sons Audio Thunderbird PC with Oyaide 004 terminations)
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  • dragon1952
    dragon1952 Posts: 4,899
    edited August 2009
    I installed a new quad of power tubes once, and thought I remembered how to set the bias. I found what I thought was the test point and adjusted the bias pot for -41V. The manufacturer had actually said .41V , which should have been measured across a 10ohm resister, which would equate to 41mA. To make a long story short (as well as a couple tubes), the -41V at the erroneous test point was the equivalent of a bias of around 100mA. With the bias set correctly, the measurement at that test point should have been around -56V.
    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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  • Ern Dog
    Ern Dog Posts: 2,237
    edited August 2009
    Just over the weekend, I made a rookie move....

    I turned on my amp and heard a pop and one of the power tubes wasn't glowing. So I cracked the hood and replaced the tube- still nothing. So I replaced the fuse, but didn't put it in right and when I powered up the amp my power tube blew out and the fuse.

    So I went through 2 fuses and 1 power tube in one fell swoop! At that moment I was seriously contemplating trading it in for a SS amp and screw all the hassle.
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  • TroyD
    TroyD Posts: 13,077
    edited August 2009
    F1nut wrote: »
    Earlier tonight I blew up one of my $100.00 NOS 1957 Sylvania 5751 tubes doing something I knew I shouldn't be doing.

    AGH!!!




    Rant over :mad:

    Ok, this MAY warrant a phone call...
    I plan for the future. - F1Nut
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  • treitz3
    treitz3 Posts: 19,033
    edited November 2009
    Sooooooooo, what was it that you were doing exactly? :D

    Or do I want to know?
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • halo71
    halo71 Posts: 4,603
    edited November 2009
    Sadly I have never owned a tube stereo amp. But I have owned a few guitar tube amps. And one time while experimenting for better tone with a few different tubes, in an old Ampeg amp. I powered off the amp, with chassis out of cabinet. And grabbed a tube without thinking how hot it was!

    Another time in another tube amp I touched a loaded capacitor, had ringing in my ears for a few days afterwards.
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
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  • dorokusai
    dorokusai Posts: 25,577
    edited November 2009
    I blew a whole quad setting bias on a monoblock while half-drunk. Ended up having to buy an octet because they were irreplaceable tubes....oh well. I didn't learn anything from the experience unfortunately.
    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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  • RuSsMaN
    RuSsMaN Posts: 17,987
    edited November 2009
    That's what you get for only being half drunk, idiot.
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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