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About sorenb

  • Rank
    Limited Edition Bronze Participant
  • Birthday August 19

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  • Gender
    Not Telling
  • Interests
    patchwork, pilates and cupcake baking


  • Headphones
    some I got from an American Airline flight

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  1. sorenb

    transconductance amp

    Have some from PCBNet, 1.6mm and 3oz. Anyone who wants to build the Transconductance amp and post a few pics here, can have a set or two. Promise to show a few pics of the build here, and I'll cover the shipping as well 😉
  2. sorenb

    current feedback electrostatic amp

    No 0,5 C°/W per channel will do if you go with stock values
  3. sorenb

    Megatron Electrostatic Headphone Amplifier

    Finally got around to finalize my Megatron, fitted into one chassis with GRHV.
  4. sorenb

    And now what did you do TODAY?

    continuing like that, you soon end up wearing a beret, eating fois gras, smoking two packs of Gauloises each day and driving a Renault 4, while complaining about the englishmen ...
  5. sorenb

    grounded grid

    you might check the current sources:
  6. sorenb

    stax mafia circuit boards

    I might have two sets I want to depart with 2mm/4oz
  7. sorenb

    i'm on a roll... the kgsshv

    <10V offset isn't a problem. Engaging the servo should quickly get you <1V
  8. sorenb

    grounded grid

    lower the tail resistor by some ~50ohms and re-adjust
  9. sorenb

    grounded grid

  10. Do you still have extra Carbon boards? I'm interested in one (one pair?) to build amp.


  11. sorenb

    2018 PCB Group Buy with TKD pots

    seeing only a few people have signed up for Carbon boards. I have some version 6g from PCBNet 2mm/3oz, that I don't mind departing from (16.75USD/ea). If interested shoot me a PM.
  12. sorenb

    KGSSHV Carbon Build Thread

    ....same source as for the other 10m90's in your build?
  13. sorenb

    KGSSHV Carbon Build Thread

    where did you get those 10m90's from?
  14. sorenb

    KGSSHV Carbon Build Thread

    unless you've got bad 10m90's (I've never come across any) I find it peculiar that both seems to be acting up pull out one 10m90 and test it with a DMM at ohms, test drain-source: short all legs, before measure drain-source => very low ohms if you don't get that the 10m90's are probably bad if you have a breadboard you might find it useful to build a cascoded css including the trimmer, and test as previously described. If you can't adjust the current using the trimmer, the DN2540 is probably bad (I've seen that a few times) Or you can use an 8pin IC-socket with resistors+trimmer soldered to build a bug-style test CCS-fixture. .