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    VTA assembly manual

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    James_Weir

    Posts : 8
    Join date : 2016-07-01

    VTA assembly manual

    Post by James_Weir on Fri Jul 22, 2016 6:26 pm

    Is this available anywhere online. I'm upgrading to a VTA pcb, and replacing everything but the chassis and output transformers so it would make my life much simpler to have the VTA kit manual rather than just the VTA pcb install instructions.

    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    VTA Manual

    Post by stewdan on Fri Jul 22, 2016 6:42 pm

    Hi --- At the bottom of the Tubes4HiFi Page "http://www.tubes4hifi.com/ST70.htm"  are the following Links:

    There is a colored high res picture of the interior of a VTA70 Chassis.

    Here is a Colored Wiring Diagram --- very usefull!!!
    http://www.tubes4hifi.com/VTA70wiringdiagram3.jpg

    Here's an older page showing step by step conversion of ST70 to VTA70 with the VTA mod PCB
    http://www.tubes4hifi.com/VTA70install.htm

    The older page has the text but the pictures are blank.  You will have to send an email message to Roy Mottram and see if he can reload the Link.  When it is reloaded, you can do a SAVEAS to your hard disk and you should a usefull copy.

    Roy's email address is: roymottram@yahoo.com

    Hope this helps.
    Stew

    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Dynaco ST70 Manual

    Post by stewdan on Fri Jul 22, 2016 6:47 pm

    Hi Again --- I forgot to mention that Dynaco Assembly Manuals are available for download at:
    http://www.tubes4hifi.com/downloads.htm

    Stew

    James_Weir

    Posts : 8
    Join date : 2016-07-01

    Re: VTA assembly manual

    Post by James_Weir on Fri Jul 22, 2016 7:22 pm

    I've seen those and found the page linked to below. I'm just hoping to get a copy of the whole thing.

    https://picasaweb.google.com/101492469183542098959/StepsInBuildingDynacoST70AmplifierKitDesignedByBobLatinoAssembledByArnoldMatthews?gsessionid=oxMc2VIi-LeDn0NKoAGfPw#5163627749892809042

    Bob Latino
    Admin

    Posts : 2414
    Join date : 2008-11-26
    Location : Massachusetts

    Re: VTA assembly manual

    Post by Bob Latino on Fri Jul 22, 2016 8:59 pm

    I have a 5 page document here that details "Replacing your stock Dynaco ST-70 with a VTA CCS driver board". I will see if Roy can post this on the Tubes4hifi web site.

    Bob

    James_Weir

    Posts : 8
    Join date : 2016-07-01

    Re: VTA assembly manual

    Post by James_Weir on Fri Jul 22, 2016 9:14 pm

    I have that, which came with the new board. I'm just about finished completely disassembling and cleaning the old unit, and thought it would be simpler to build from one VTA kit instructions rather than parts of the VTA driver board instructions and parts of the st-70 instructions.

    As is, each step involves following the st70 instructions, cross checking with the VTA instructions to make sure that's not something I'm directed to undo, and using the diagram mentioned above to double check.

    Bob Latino
    Admin

    Posts : 2414
    Join date : 2008-11-26
    Location : Massachusetts

    Re: VTA assembly manual

    Post by Bob Latino on Sat Jul 23, 2016 7:30 pm

    Roy has just posted my short 5 page step by step manual to replace the stock Dynaco ST-70 driver board with a VTA driver board. It is at the link below ..

    Installing a VTA driver board into a stock Dynaco ST-70 amp

    Bob

    James_Weir

    Posts : 8
    Join date : 2016-07-01

    Re: VTA assembly manual

    Post by James_Weir on Sat Jul 23, 2016 8:03 pm

    Thanks so much for that Bob, and Roy. Your help with this and my other questions has been invaluable.

    tubes4hifi
    Admin

    Posts : 1292
    Join date : 2008-11-30

    Re: VTA assembly manual

    Post by tubes4hifi on Mon Jul 25, 2016 2:29 pm

    also, just in case it wasn't obvious, a manual for the VTA driver board comes with PURCHASE, otherwise, it isn't available from Bob or myself, due to the proprietary circuit design.

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