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    Tube Question

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    bluemeanies

    Posts : 179
    Join date : 2015-02-09
    Age : 66
    Location : Folsom Pa.

    Tube Question

    Post by bluemeanies on Tue Apr 11, 2017 10:10 am

    I been reading people mentioning the KT 150.
    IMO I think the KT120 is substantial in the m125 but I do not know much about the 150's.
    Is anyone here using the 150's in the m125's.
    Also what bias level are you using? I know the 88's and 120's have a .500 setting for two tubes but is it different for the 150's since they run hotter.

    Thanks
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    Peter W.

    Posts : 345
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Re: Tube Question

    Post by Peter W. on Tue Apr 11, 2017 10:44 am

    https://www.newsensor.com/pdf/tungsol/kt150-tungsol.pdf  

    http://www.tungsol.com/specs/kt120-tung-sol-specs-curves.pdf  

    Looks like distinctions without differences.

    Writing for myself, I would think/hope that New Sensor would spend its time making a better, more reliable 120 than create a 'new' tube of not-much distinction.
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    corndog71

    Posts : 528
    Join date : 2013-03-19
    Location : It can get windy here

    Re: Tube Question

    Post by corndog71 on Tue Apr 11, 2017 11:35 am

    There are a handful of amps out there being sold as KT150 amps but really they're just KT88 amps with KT150 tubes. Doing just a quick search I found one company that seems to make a true KT150 amp. 100W/ch monoblocks for only $50K/pr.

    Clearly designing and building transformers for the KT150 is a daunting and probably expensive endeavor. Very few seem to want to risk producing an amplifier for an expensive tube made by only one company.

    If I knew how to roll my own transformers I would like to build a proper KT150 amp.
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    Bob Latino
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    Join date : 2008-11-26
    Location : Massachusetts

    Re: Tube Question

    Post by Bob Latino on Tue Apr 11, 2017 11:38 am

    bluemeanies wrote:I been reading people mentioning the KT 150.
    IMO I think the KT120 is substantial in the m125 but I do not know much about the 150's.
    Is anyone here using the 150's in the m125's.
    Also what bias level are you using? I know the 88's and 120's have a .500 setting for two tubes but is it different for the 150's since they run hotter.

    Thanks

    You can use the Tung-Sol KT150 output tube in the VTA M-125's. That said, they are much more expensive than the Tung-Sol KT120 and don't offer anything "more" than the KT120 in the M-125's .. Even when you use the KT120's in the M-125's, the KT120's are being used "as a KT88 or 6550 output tube" in the M-125's.

    Bob
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    deepee99

    Posts : 1507
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: Tube Question

    Post by deepee99 on Tue Apr 11, 2017 3:36 pm

    I'm still waiting to hear from anybody who has bought a quad of those EAT KT-88s at $1600.

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