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    New Construction ST70

    jonny6336
    jonny6336

    Posts : 3
    Join date : 2018-01-31
    Age : 41
    Location : Italy

    New Construction ST70 Empty 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.

    New Construction ST70 Immagi27
    New Construction ST70 Immagi28
    New Construction ST70 Immagi29
    New Construction ST70 Immagi30
    New Construction ST70 Immagi31
    New Construction ST70 Img_8015
    New Construction ST70 Img_8016
    New Construction ST70 Connes12
    New Construction ST70 Immagi32
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    New Construction ST70 Immagi34
    New Construction ST70 Ta111
    New Construction ST70 Fine_311
    New Construction ST70 Immagi35
    New Construction ST70 Fine11
    New Construction ST70 Img_8017
    New Construction ST70 Img_8110
    New Construction ST70 Connet10
    New Construction ST70 Immagi36
    New Construction ST70 26907910
    avatar
    jimzim429

    Posts : 6
    Join date : 2017-02-08

    New Construction ST70 Empty 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
    jonny6336
    jonny6336

    Posts : 3
    Join date : 2018-01-31
    Age : 41
    Location : Italy

    New Construction ST70 Empty 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
    New Construction ST70 Immagi38

    New Construction ST70 27971810

    crkohut
    crkohut

    Posts : 22
    Join date : 2016-11-02
    Age : 58
    Location : Sudbury, Ontario, Canada

    New Construction ST70 Empty Re: New Construction ST70

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

    Nice!! Gotta love "Trasformatore"!! The pre looks great also!
    avatar
    MV213

    Posts : 12
    Join date : 2017-11-04

    New Construction ST70 Empty Re: New Construction ST70

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

    I like your power connector!
    jonny6336
    jonny6336

    Posts : 3
    Join date : 2018-01-31
    Age : 41
    Location : Italy

    New Construction ST70 Empty Re: New Construction ST70

    Post by jonny6336 on Sat Nov 03, 2018 5:34 pm

    Thank you guys
    I have adopted this connector, to have the possibility to use different power cables
    Danner
    Danner

    Posts : 16
    Join date : 2012-09-27

    New Construction ST70 Empty Re: New Construction ST70

    Post by Danner on Mon Nov 19, 2018 11:27 pm

    Very nice build. Great job. [beerclink]

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