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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


    Dynaco Pas Phono Input

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    rudes

    Posts : 47
    Join date : 2012-03-07

    Dynaco Pas Phono Input Empty Dynaco Pas Phono Input

    Post by rudes on Mon Mar 09, 2020 1:31 pm

    Is there an easy way to wire the selector switch to use the tape head input as an additional phono input? The only mod I've seen requires changing the original RIAA EQ. I would like to keep it close to factory. Thx
    peterh
    peterh

    Posts : 1403
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Dynaco Pas Phono Input Empty Re: Dynaco Pas Phono Input

    Post by peterh on Mon Mar 09, 2020 3:03 pm

    rudes wrote:Is there an easy way to wire the selector switch to use the tape head input as an additional phono input? The only mod I've seen requires changing the original RIAA EQ. I would like to keep it close to factory. Thx
    Yes, read the manual.
    Basically move the equalisation components to the board.
    It has been a thread here too, maybe someone with better memory can
    giva a hint
    peterh
    peterh

    Posts : 1403
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Dynaco Pas Phono Input Empty Re: Dynaco Pas Phono Input

    Post by peterh on Wed Mar 11, 2020 5:30 am

    peterh wrote:
    rudes wrote:Is there an easy way to wire the selector switch to use the tape head input as an additional phono input? The only mod I've seen requires changing the original RIAA EQ. I would like to keep it close to factory. Thx
    Yes, read the manual.
    Basically move the equalisation components to the board.
    It has been a thread here too, maybe someone with better memory can
    giva a hint

    See p.12 on the PAS assembly manual, at right :
    b. Magnetic Phono Cartridge
    A second magnetic phono cartridge can be connected on the right channel by wiring a short link of wire from lug #9 to lug #11 of switch wafer B (solder both). For the left channel, connect a wire between lug #3 and lug #5 of wafer B (solder both).

    Audiokarma has a thread about the subject, some of the advices are, in my opinion
    mooth ( avoid changing the riaa eualisation, it's good as is, the curacio makes it
    less good)
    https://audiokarma.org/forums/index.php?threads/dynaco-pas-3x-how-to-hook-up-or-rewire-for-2-turntables.769240/
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    rudes

    Posts : 47
    Join date : 2012-03-07

    Dynaco Pas Phono Input Empty Re: Dynaco Pas Phono Input

    Post by rudes on Thu Mar 12, 2020 10:48 am

    Thank you!

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