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About sorenb

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    Limited Edition Bronze Participant
  • Birthday August 19

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  • Interests
    patchwork, pilates and cupcake baking


  • Headphones
    some I got from an American Airline flight

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  1. sorenb

    KGSSHV Carbon Build Thread

    most likely you are measuring at BIAS output, having an output impedance of 5Meg ... and the DMM most likely 10Meg, so the +380V is actually 570V Use the test point (TP) rather to get the right voltage
  2. sorenb

    And now what did you do TODAY?

    Indeed a remarkable piece, and always good for a listen ... reminds me of Pears/Britten Winterreise ... and the recent announcement from the Britten-Pears and Snape Malting foundations announcement of an "exciting and logical development": to merge and forget all about Peter Pears ... wonder if the next "logical" step will be announcing that Pears lured Britten into living with him against his will, and the foundation begins to twitt #metoo on behalf of Britten ...
  3. sorenb

    KGSSHV Carbon Build Thread

    BTW there are (at least) two versions of version 1.8 ... One has the CPC wrongly hooked up, but can easily be fixed: pics are of a skinny
  4. sorenb

    KGSSHV Carbon Build Thread

    Either remove the CPC if you are not gonna use it, or apply +2V across As said, if you have +18V with cpc1117 shorting, the cascoded CSS most likely needs to be reduced, 4k7 usually works bad soldering?
  5. sorenb

    KGSSHV Carbon Build Thread

    did you populate the CPC1117 ...either remove the CPC1117 or applie +2V across the pins If you have ~18V on the output, with the CPC1117 populated you probably have to reduce the cascoded CCS current....are you using 2k8 or 4k7?
  6. sorenb

    Burson Audio V5i opamps

    ...sure it wasn't ZIF10?
  7. 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 😉
  8. sorenb

    current feedback electrostatic amp

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

    Megatron Electrostatic Headphone Amplifier

    Finally got around to finalize my Megatron, fitted into one chassis with GRHV.
  10. 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 ...
  11. sorenb

    grounded grid

    you might check the current sources:
  12. sorenb

    stax mafia circuit boards

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

    i'm on a roll... the kgsshv

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

    grounded grid

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