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    New Construction ST70

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    jonny6336

    Posts : 2
    Join date : 2018-01-31
    Age : 40
    Location : Italy

    New Construction ST70

    Post by jonny6336 on Fri Mar 02, 2018 7:48 am

    Goodmorning everyone
    First of all I introduce myself, my name is Giovanni and I live in Italy.
    I am a lover of the electronic valves. I have built many amplifiers, both SE, PP and OTL.
    Driven by curiosity and even peche I always read positive opinions, I wanted to make the Dynaco ST70.
    I preferred that my realization was all original so I bought the new PCB and on the net I found several accessories like: Inductance, clogs and screws.
    I made the power transformer here in Italy, In the photos you see of the TU that I had at home, then thanks to a friend I put the original TU Z-326
    I enclose all the photos of my realization.





















    jimzim429

    Posts : 5
    Join date : 2017-02-08

    Re: New Construction ST70

    Post by jimzim429 on Fri Mar 02, 2018 11:00 am

    jonny,

    It appears to be a 1st class build. Nice work.  What speakers are you using to listen to the amplifier?  Does the amplifiers sound smooth or snappy?

    jz
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    jonny6336

    Posts : 2
    Join date : 2018-01-31
    Age : 40
    Location : Italy

    Re: New Construction ST70

    Post by jonny6336 on Fri Mar 02, 2018 1:14 pm

    Thanks for all,
    First of all I can say that the amp sounds very well and has a great linearity.
    It is expressed in the high frequencies with a lot of delicacy and does not come out of the lines and does not screech, very good the soft and controlled low coverage range
    In measures I have been very cruel and I can guarantee that the original TU showed no stuarzione.
    For the use I am still not entirely convinced whether to make a single-track with Fostex FE 103 that I own, or buy some Pylon speakers that I was able to listen to and I was impressed.
    Now I'm making a pré to devote that is the Kondo M77. The source yet to be decided.
    Here is the next job




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    crkohut

    Posts : 13
    Join date : 2016-11-02
    Age : 57
    Location : Sudbury, Ontario, Canada

    Re: New Construction ST70

    Post by crkohut on Sat Mar 31, 2018 5:44 pm

    Nice!! Gotta love "Trasformatore"!! The pre looks great also!

    MV213

    Posts : 12
    Join date : 2017-11-04

    Re: New Construction ST70

    Post by MV213 on Thu Apr 05, 2018 3:46 pm

    I like your power connector!

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