Vintage Selmer Project

Discussion in 'Amp Tech Center' started by Si G X, Feb 6, 2020.

  1. Si G X

    Si G X Tele-Afflicted

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    Amazing Jon, Sally is a great name too... my guitars are Lucy and Katie. I'm sure they'll be happy together. :D
     
  2. ricknbaker

    ricknbaker Tele-Afflicted

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  3. Squawker

    Squawker Tele-Meister

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    Brilliant news, John. Thanks for the gut shots! And what a fortunate man Si is, both with the amp and your help :)

    What value tank cap did you end up with? Am thinking that another 33u should do the trick... or I could crack out Duncan's PSU Designer and model it :p
     
  4. Jon Snell

    Jon Snell Tele-Holic

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    Like a silly Billy, a few years ago I let my Treble and Bass 50 go and a few other collectible Marshall, Orange and Ampegs from the 50s. Oh well, it bought me a Harley but sadly that has now gone to another owner as I can no longer lift the bike if she falls over. It's an age thing.
    I concentrate on refurbishing splendid valve gear now, keeps the grey matter going and I am busier now than I was when I had my repair business, employing 11 qualified engineers, on our main industrial estate.
    Nice amplifiers.
     
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  5. Jon Snell

    Jon Snell Tele-Holic

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    My Mullard 1961 Valve Data Book recommends for an EZ80 a Cfilt or cathode capacitance, of no more than 50u and I have always had good results with a 22u 350v.
     
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  6. Jon Snell

    Jon Snell Tele-Holic

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    All done and ready to return to Si.
    A more comprehensive timeline is on my web site pages; https://jonsnell.co.uk/page-8/
    Happy heaters.jpeg All now working.jpeg Old parts.jpeg

    Another job completed and I hope all the viewers found this thread useful or at least interesting.
    Until the next one ...
     
  7. Si G X

    Si G X Tele-Afflicted

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    Thanks Jon, that's not bad for amp that's over 55+ years old is it? Can't wait to get her back in the box!

    Old parts.jpeg
     
  8. Si G X

    Si G X Tele-Afflicted

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    ... and even the little power light bulb still works I see in the pictures on the website! :)
     
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  9. Jon Snell

    Jon Snell Tele-Holic

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  10. Si G X

    Si G X Tele-Afflicted

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  11. Jon Snell

    Jon Snell Tele-Holic

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    Pretty close I would say.
    Judging by the photos, Selmer used to date the amplifiers by the covering and looking at the photos of the cabinet, I would say it is the 'crocodile' cabinet, that makes it guaranteed between 1963 and 1965.
    Those capacitors most probably have been replace before.
     
    Last edited: Feb 14, 2020
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  12. Jon Snell

    Jon Snell Tele-Holic

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    From what I can make out it probably cost around 12 guineas when new!
     
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  13. Si G X

    Si G X Tele-Afflicted

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    Looking at that website it's not a crocodile, but the blue series before...

    crochead.jpg

    mine is exactly like this, the blue/grey range before ... which can only be 62 or 63.

    pop.jpeg
     
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  14. Squawker

    Squawker Tele-Meister

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    I concur - looks like blue/grey period to me, and thus Sept. '61 - Sept. '63.

    How brilliant to have it fully functional. Kudos to Jon and congrats Si.

    This has really piqued my urge to build again - have only done pedals recently and haven't built an amp for ages (an AC10C1 will cure you of that, at least for a while :p )
     
  15. Si G X

    Si G X Tele-Afflicted

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    I'll have it back early next week Squawker, looking forward to hearing what it sounds like with that speaker. I'll do a video or something as soon as I can. I don't have any good recording stuff but I can do a phone video if nothing else.
     
  16. Jon Snell

    Jon Snell Tele-Holic

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    If it is a bluey then 61 - 63 is correct.
    Nice, same age as my old Harley Davidson!
     
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  17. radiocaster

    radiocaster Poster Extraordinaire

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    New Sensor actually distributes from all the factories, including JJ and Shuguang. The Genalex 12AX7 is actually Chinese.

    The JJ factory is one of the former Tesla factories. There is such a thing as JJ Tesla, because after the JJ company was founded they still labeled their tubes "Tesla" for a while in the 90s. I don't think said "JJ" on them, and I'm pretty sure they didn't say "Made in Czechoslovakia" because Slovakia was independent at that point. There is a Czech Tesla factory that still makes tubes, but they are industrial types not used in guitar amps.

    All the factories make tubes for rebranding by companies like GT, TAD, Tube Town and Harma.

    Fakes are quite common as well:
    https://vacuumtubesinc.com/index.php/hallofshame

    https://jacmusic.com/nos/images/Fakes/index.htm
     
    Last edited: Feb 17, 2020
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  18. Jon Snell

    Jon Snell Tele-Holic

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    Every bit of information is useful. Thanks for the links.
     
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