G9700 outputs

Discussion in 'Exclusively Sansui' started by Willy6, Jun 17, 2017.

  1. Willy6

    Willy6 AK Subscriber Subscriber

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    Does anyone know of a suitable replacement for the 2SC2607 and 2SA1116 outputs?
     
  2. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    Last edited: Jun 21, 2017
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  3. Willy6

    Willy6 AK Subscriber Subscriber

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    I noticed on ebay that little diode from the UK has the original SanKen 2SC2607,2SA1116 transistors I wonder if they are counterfeit or the real deal?
     
  4. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    Don't count on it, you'll pay inflated prices, and they haven't been made for decades.
     
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  5. kevzep

    kevzep Its all about the Music Subscriber

    I've had fake devices from Little Diode before so I don't use them any more.
    New On-Semi devices are far superior to any transistor made in the 1970's....
     
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  6. kevzep

    kevzep Its all about the Music Subscriber

    What are the rail voltages on the 9700? Probably can use something a little closer to the originals, but really its splitting hairs at the end of the day....
    MJ15003/15004 are probably closer.....
     
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  7. ghazzer

    ghazzer Sansui addict Subscriber

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    Filter caps and rail voltage of the G-9700 are listed as ±84.3VDC in the service manual.
     
  8. moefuzz

    moefuzz Active Member

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    .






    Willy, There are still Real Sanken 2SC2608 and 2SA1117 outputs kicking around.
    totally compatible, bring your own solder.

    All parameters are exactly/the same as 2607 and 1116 except the output power/voltage is higher/headroom.


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    G9700
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    Last edited: Jun 20, 2017
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  9. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    Nice pictures but old I think, the quantities pictured are not available today. If you want to pay between $10 and $35 for ones and two's of potentially counterfeit transistors that's fine.

    The notable exception is anything advertised there (on ebay) from AK member Kale, (ebay = kale1_1) when he says something is genuine - it is.
    @Kale
     
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  10. ManyMoonsAudio

    ManyMoonsAudio AKA paul79 Sponsor Subscriber

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  11. kevzep

    kevzep Its all about the Music Subscriber

    I won't buy from Little Diode any more, I have got fakes off them before, I'm done with the whole "gotta be genuine" thing, modern TO-3's are superior in construction, manufacturing has come a long way since the '70s.

    I just looked them up and they are both available, but I can't see any difference between them....

    See I would be using MJ15003/15004, they are 140V instead of 250v but they are 20 amp rather than 16 amp the other ones are, but they are 2mhz instead of the 4mhz, not sure if that is a factor......probably not I'd say...
     
  12. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    I think I read that the 93/94 pair are a bit more linear (ref: curve family) than the 95/96 pair, but agree not much in it.
     
  13. Overundr1

    Overundr1 AK Subscriber Subscriber

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    Those MJ15003/4's have caught my eye too lately as McIntosh is quite fond of them.
    However have had nothing but good luck with the 93/4's and never seen one fail.
     
  14. kevzep

    kevzep Its all about the Music Subscriber

    I think McIntosh not only use them because of the lower ft and voltage, but they are higher current, and since the McIntosh Autotransformer amps run at 2.1Ω on the other side of the Xfrmr, I'd say the those devices are probably better in that respect...
     
  15. ManyMoonsAudio

    ManyMoonsAudio AKA paul79 Sponsor Subscriber

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    The 95/96 have a wider SOA, but not really necessary in most anything out there that uses a TO-3 that I am aware of.
     
  16. moefuzz

    moefuzz Active Member

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    There are more than those shown and the pictures not that old.
     
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  17. Willy6

    Willy6 AK Subscriber Subscriber

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    I got in touch with Kale and things are looking up...
     
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  18. moefuzz

    moefuzz Active Member

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    Some may wish to look into the January 2017 thread on how to spot fakes across the internet...

    http://audiokarma.org/forums/index....stors-2sc2607-2sc2608-2sa1116-2sa1117.751920/

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    You can weight 2SA and 2SC to find out their worth before you install.

    Originals typically weight around 18 to 20 grams plus or minus.
    Originals Sanken as pulled seem to weight ever so slightly less than new old stock replacement Sanken
    but perhaps this was a difference in batch runs over a period of time- but still -- all real Sanken are in the 18 to 20 gram range..


    Fake Sanken weight in under 14 grams, typically 12 to 14 but never remotely close to originals at 18+ grams..


    China has flooded the world with fake Sanken that will destroy your restoration shortly after power up.
    They are advertised widely around the world and throughout the USA as "NOS" or ripped from equipment-Bullshit.










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    ORIGINAL SANKEN REPLACEMENT TRANSISTORS


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    ORIGINAL SANKEN -AS PULLED FROM SANSUI G9700



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    FAKE SANKEN TRANSISTORS
    AVAILABLE WIDELY IN USA - GREAT BRITAIN - ASIA
    BEING SOLD AS NOS



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    ORIGINAL VERSUS FAKE SANKEN (ORIGINAL AS PULLED FROM SANSUI G9700)


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    Last edited: Jun 25, 2017
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  19. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    That's brilliant Moe. :bowdown:
     
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  20. llwhtt

    llwhtt Well-Known Member

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    Hyperion,

    You made my heart stop when you stated the 93/94s are obsolete. I just checked Mouser and I don't see anything about being obsolete. The non G (lead) version is obsolete though, more info please.

    Craig
     

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