david winter
Last Activity:
Sep 14, 2018
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Nov 20, 2009
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Location:
Paris, France
Occupation:
Antiques dealer.

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david winter

Classical music lover., from Paris, France

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david winter was last seen:
Sep 14, 2018
    1. Jonny Ramone
      Jonny Ramone
      Try tapeheads site for your GX-630D
    2. david winter
      david winter
      Hi Simon,
      Yes I used a BC237B without trouble. It's been some time since I rebuilt this amp and the client never came back with a problem.
      The B suffix stands for the gain. B is for hFE 200min.
      All others have a typical gain of 110min/125min except for the C which is 400min.
      I have no idea if gains higher than 200 would work also. Asking in the form would be helpful. Hope this helps. David.
    3. slimecity
      slimecity
      Hi David - sorry to message you out of the blue but I see in the past (2012?) you had the same problem with your AU999 that I now have. One of the small cylindrical heatsink mounted transistors (bias setting transistor?) has had one leg break, so now I think I need to replace both of them. In your post on the subject, could the following still be considered to be true?:

      I changed the BC408 by a BC237B as used on the other channel which adjusts correctly, and the che current is now adjustable. We should consider the BC237B a good sub for the 2SC281.

      My thread on the topic is under the "Sansui" board. Would appreciate your reply. I am in New Zealand and it appears that I can source the BC237B relatively easily here. thanks! simon
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  • About

    Home Page:
    http://www.paleophonies.com
    Location:
    Paris, France
    Occupation:
    Antiques dealer.
    Amateur pianist, classical music lover, dealer of vintage audio stuff, etc.

    Classical music, early recording machines, and many others !

    Signature

    Tape please. Vinyl as well. CDs welcome.
    Revox PR99 MKII, Revox A77, Revox A78, Denon DP-60L, Kenwood KT-5020L, AR-3a Improved.