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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


4 posters

    stepped attenuator cable length

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    rymi


    Posts : 21
    Join date : 2017-05-20

    stepped attenuator cable length Empty stepped attenuator cable length

    Post by rymi Wed Jun 07, 2017 10:17 pm

    question for those using the stepped attenuator with the vtast70.

    how long of interconnects can you get away with between your source (phono, cd etc) and the attenuator?

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    Dogstar


    Posts : 361
    Join date : 2014-06-23

    stepped attenuator cable length Empty Re: stepped attenuator cable length

    Post by Dogstar Thu Jun 08, 2017 1:20 am

    Which stepped attenuator are you talking about and exactly how do you intend on connecting your source to your amp? Directly or through a preamp?
    peterh
    peterh


    Posts : 1823
    Join date : 2012-12-25
    Location : gothenburg, sweden

    stepped attenuator cable length Empty Re: stepped attenuator cable length

    Post by peterh Thu Jun 08, 2017 3:51 am

    rymi wrote:question for those using the stepped attenuator with the vtast70.

    how long of interconnects can you get away with between your source (phono, cd etc) and the attenuator?

    It depends on the output characteristics of the sources.
    And "phono", an unamplified cartridge cannot be used without a riaa-amp, thus it's the
    output characteristics of the riaa-amp used that is importent.

    Bob Latino
    Bob Latino
    Admin


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    Join date : 2008-11-26
    Location : Massachusetts

    stepped attenuator cable length Empty Re: stepped attenuator cable length

    Post by Bob Latino Thu Jun 08, 2017 9:16 am

    rymi wrote:question for those using the stepped attenuator with the vtast70.

    how long of interconnects can you get away with between your source (phono, cd etc) and the attenuator?


    I have used the VTA stepped attenuator with cable lengths up to 3 meters with no issues. After maybe 4 to 5 meters the capacitance of the interconnect cables can act as a low pass filter which can restrict high frequencies a bit. Personally, I think that you would have to go somewhat longer than 5 meters and maybe as long as 10 meters (almost 33 feet) before you even noticed any attenuation of the high frequencies from long interconnects ..

    Bob

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