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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


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    PAS 3 Phono board question

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    willemakeit


    Posts : 1
    Join date : 2010-05-16

    PAS 3 Phono board question Empty PAS 3 Phono board question

    Post by willemakeit Sun May 16, 2010 10:48 pm

    I am just going to use the line part of my PAS3 and am wondering if I can leave the tubes out of the Phono board?
    Bob Latino
    Bob Latino
    Admin


    Posts : 3114
    Join date : 2008-11-26
    Location : Massachusetts

    PAS 3 Phono board question Empty Re: PAS 3 Phono board question

    Post by Bob Latino Sun May 16, 2010 11:09 pm

    willemakeit wrote:I am just going to use the line part of my PAS3 and am wondering if I can leave the tubes out of the Phono board?

    Hi William,

    Yes - you can leave the two 12AX7's out on the phono board but it will probably raise the voltages on the other two 12AX7 tubes on the line stage board. Check the PAS-3 manual and check the voltages on the line stage 12AX7's. If they are only slightly higher than normal (5% - 10%) you will probably be OK ...

    Bob

      Current date/time is Thu Jan 20, 2022 10:29 am