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    Photos of rebuilt MKIV's with the VTA boards configured for 12AT7's, and switchable from UL to Triode

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    Photos of rebuilt MKIV's with the VTA boards configured for 12AT7's, and switchable from UL to Triode

    Post by Guest on Sun Jan 08, 2012 1:15 am

    This is my rebuilt pair of MKIV's. It was a very enjoyable project, but like all projects of this type, it had it's moments. As far as parts: PRP resistors, Russian PIO caps, Elna electrolytics, Bourn trim pots, center conductor from Mark Levinson's coax cable from the 1970-80's, it was pure silver, with a soft teflon jacket was used as the hook up wire, C & K 9201 switch for the triode/UL. I bought a kit from Vintage Electron on e-bay, an got them to sell me an addition pair of red test jacks so I could set the individual bias for the power tubes. I will try to supply a photo of the set up. I also made a pair of mini male banana to standard male banana plugs, so I don't have to hold a probe in the female mini banana on the side of the amp. The nine pin sockets are from Parts Connexion, and are teflon composition, and the octal are ceramic from the same place. The on/off switches are a heavy duty switches, power cords are Home Depot. The Quad cap is the larger than the stock cap that is available from Triode Electronics. That's about all I can think of at this point. I do want to thank Roy for all his help on the amps, and all the members here for their advice, could not have done it without you!

    https://picasaweb.google.com/113676908555013647381/20120106DynacoMKIVFinallyFinished?authkey=Gv1sRgCJPelf3NuuuefA


    Last edited by Michael Noroña on Sun Jan 08, 2012 9:31 am; edited 2 times in total

    SoundBound

    Posts: 13
    Join date: 2011-07-31

    Re: Photos of rebuilt MKIV's with the VTA boards configured for 12AT7's, and switchable from UL to Triode

    Post by SoundBound on Sun Jan 08, 2012 9:20 am


    OK, the new link works fine. Thanks. Nice amps, I am sure you will get a lot of good listening with them!


    Last edited by SoundBound on Mon Jan 09, 2012 11:12 am; edited 1 time in total

    Guest
    Guest

    Re: Photos of rebuilt MKIV's with the VTA boards configured for 12AT7's, and switchable from UL to Triode

    Post by Guest on Sun Jan 08, 2012 6:37 pm

    Thanks for pointing out the problem with the link. For some reason when I used the link it worked. Although it seemed odd because the web address was very short, and generic. Another ghost in the machine type of thing I guess.

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