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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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hrudu90
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    A custom ST-70 from forum member nraghunadh - link to photos ..

    Bob Latino
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    • Post n°1

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by Bob Latino Mon Nov 05, 2012 8:07 pm

    One of our members > "nraghunadh" built a custom ST-70 with an original driver circuit on a new board. You can tell from the photos that the amount of time and work put in was extensive. Custom transformer covers milled out of large aluminum tubing and tube sockets like I have never seen before. Extremely well done ... nraghunadh if you see this post maybe you can comment with more detail on how this amp was assembled ? See link to his photos below ..

    https://picasaweb.google.com/112349276746273853758/PreampAndST70Making2012?authkey=Gv1sRgCOaR9vvI_unXtAE

    Bob


    Last edited by Bob Latino on Mon Nov 05, 2012 8:50 pm; edited 1 time in total
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    GP49
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    • Post n°2

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by GP49 Mon Nov 05, 2012 8:35 pm

    Bob Latino wrote:One of our members > "nraghunadh" built a custom ST-70 with an original driver circuit on a new board. You can tell from the photos that the amount of time and work put in was extensive. Custom transformer covers milled out of large aluminum tubing and tube sockets like I have never seen before. Extremely well done ... nraghunadh if you see this post maybe you can comment with more detail on how this amp was assembled ? See link to his photos below ..


    Bob

    Unfortunately:

    403. That’s an error.

    We're sorry, but you do not have access to this page. That’s all we know.
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    nmchiefsfan
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    • Post n°3

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by nmchiefsfan Mon Nov 05, 2012 8:39 pm

    Same error here.
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    Bob Latino
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    • Post n°4

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by Bob Latino Mon Nov 05, 2012 8:54 pm

    OK - I changed the link above in post # 1 ... See if it works now. It works for me ..

    Bob
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    • Post n°5

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by Guest Mon Nov 05, 2012 9:24 pm

    .


    Last edited by PeterCapo on Wed Dec 02, 2020 3:11 pm; edited 1 time in total
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    • Post n°6

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by GP49 Tue Nov 06, 2012 12:22 am

    Thanks for the correct link, Bob.

    It was well worth the time to see how he did it. VERY impressive.

    I wish I could do metalwork like that!
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    hrudu90
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    • Post n°7

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by hrudu90 Tue Nov 06, 2012 12:51 am

    I am wondering what 'blue' tubes were used in the amp?
    Just beautiful; thanks for the link.
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    nerpissad
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    • Post n°8

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by nerpissad Tue Nov 06, 2012 6:22 am

    that is one beautiful build! very futuristic looking amp compared to the original and VTA ST70.
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    Tom
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    • Post n°9

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by Tom Tue Nov 06, 2012 8:51 am

    Wow. And Wow again.
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    • Post n°10

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by Luddite Tue Nov 06, 2012 2:18 pm

    Bob Latino wrote: Custom transformer covers milled out of large aluminum tubing and tube sockets like I have never seen before. Extremely well done ...

    Bob

    Great job on the amp construction! Bob, I believe those octal tube sockets are relay sockets which commonly have octal pin-outs. These sockets are also very useful for bench protyping and testing of tube circuits and can be used with certain plug-in line transformers from various manufacturers.

    Best Regards,
    Charlie
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    • Post n°11

    A custom ST-70 from forum member nraghunadh - link to photos .. Empty Re: A custom ST-70 from forum member nraghunadh - link to photos ..

    Post by nraghunadh Tue Nov 06, 2012 5:09 pm

    Thank you for all your comments.
    Yes, these octal relay sockets are really good to do prototyping, And i got these sockets from local electrical shop.
    I have added some more photos in to the Picasa link (inside and back panel of the amp)
    Thank you
    Raghu

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