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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


    Impedance question

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    Kinski

    Posts : 43
    Join date : 2017-09-20

    Impedance question Empty Impedance question

    Post by Kinski on Sat Nov 21, 2020 12:18 am

    I’m sure this has been asked a bunch, but I couldn’t find much in a search.

    Will the impedance of a PAS-2 with the tone controls removed match well with a VTA-70?
    PeterCapo
    PeterCapo

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    Join date : 2008-12-05

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    Post by PeterCapo on Sat Nov 21, 2020 12:46 am

    .


    Last edited by PeterCapo on Fri Dec 04, 2020 2:18 pm; edited 3 times in total
    peterh
    peterh

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    Post by peterh on Sat Nov 21, 2020 3:28 am

    Kinski wrote:I’m sure this has been asked a bunch, but I couldn’t find much in a search.

    Will the impedance of a PAS-2 with the tone controls removed match well with a VTA-70?
    A PAS2/3 will drive a ST-70 well with or without tonecontrols.
    The vta70 has an input impedance of app. 270k
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    Kinski

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    Post by Kinski on Sat Nov 21, 2020 1:18 pm

    Thanks!
    PeterCapo
    PeterCapo

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    Post by PeterCapo on Sat Nov 21, 2020 6:53 pm

    .


    Last edited by PeterCapo on Mon Nov 30, 2020 5:00 pm; edited 1 time in total
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    Kinski

    Posts : 43
    Join date : 2017-09-20

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    Post by Kinski on Sat Nov 21, 2020 6:55 pm

    My pas2 has been completely restored to stock, except I removed the tone controls. Running it into a restored ST-70 with a VTA driver board installed. Just wanted to make sure they will play nicely together in this form.

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