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About lkong

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    Bay Area, CA

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  1. lkong


    https://www.audiosciencereview.com/forum/index.php?threads/rolling-op-amps-in-gustard-h20-headphone-amplifier.7407/ Not sure if this test is comprehensive, it doesnt look too good for Sparko.
  2. lkong

    goldenreference low voltage power supply

    Looking close to this: https://www.diyaudio.com/forums/group-buys/333844-ideal-bridge-rectifier-gb.html
  3. lkong

    What Are You Building Today

    Got my Voron 2.1 printer somewhat put together. Voron2.1 - Imgur.mp4
  4. lkong

    The Multi Amp aka Dynalo Mk2

    What worries me is what caused it, I simply tested the amp with 1k sine wave. I hope it's just the input jfet.
  5. lkong

    The Multi Amp aka Dynalo Mk2

    I think I let the magic smoke out by swapping into JFET input. Now the amp functions normally with input on + and G input, but not - and G. Should I worry about anything else than the J109? (another pair of J109 and K389 worked perfectly)
  6. Is there a high pass/low pass between electrostatic and dynamic? Or they are wired in parallel.
  7. lkong

    The analog thread.

    I'm intrigued, I wonder if it would be a good entry level turntable?
  8. lkong

    The Multi Amp aka Dynalo Mk2

    I think somewhere in this thread said 100k
  9. lkong

    And now what did you do TODAY?

    Had common.net installed one of these on my roof. Now I'm part of wireless mesh.
  10. lkong

    The Multi Amp aka Dynalo Mk2

    If I were to replace input BJTs with JFETs(toshiba or linear), what IDSS range should I aim for?
  11. lkong

    The ultimate DIY? A Stax SRM-T2!

    Are those holes drilled by a shotgun?
  12. lkong

    Part Sourcing Assistance/Advice Thread

    I need to make/buy some very short and soft (5-10cm) USB cables. Any suggestions?
  13. lkong

    and now for something completely different part 3

    All in those two google drives: https://drive.google.com/drive/folders/0B7egryukiT7_TFlEQlBRejdVdDQ https://drive.google.com/drive/folders/0B_iJFfZStuVhSE5nOHBVdTByR1k
  14. lkong

    Speaker Porn

    Are you a cop?
  15. lkong

    Speaker Porn

    Were you on Reddit too? Saw this earlier from Reddit.