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spritzer

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spritzer last won the day on October 31 2018

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About spritzer

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    Don of Stax Mafia...wait there is no mafia
  • Birthday 07/05/1982

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    http://www.mjolnir-audio.com

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    Reykjavik, Iceland

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    Reykjavik, Iceland

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  1. spritzer

    The Headcase Stax thread

    Looks good!!
  2. spritzer

    The Headcase Stax thread

    That is the best way. You could do something fancy and regulate the bias but I wouldn't bother.
  3. spritzer

    The Headcase Stax thread

    Those are actually silistors and I'd remove them at this point. They don't age well and at 30+ years old... jut them off. The damping is on all sides of the housing and needs to be very dense or it won't work at all.
  4. spritzer

    The Headcase Stax thread

    Yup, sounds like it. Could me a marginal part like a cap or something like that. Well either that or the PSU is failing. It's not the 100V unit, right?
  5. spritzer

    The Headcase Stax thread

    There is nothing about it in the datasheet but in my experience it is a bit longer but not by much.
  6. spritzer

    Caps in bias supply

    We've gone over this numerous times but storing any amount of energy after the ballast resistor can make arcing much worse than it would be otherwise. Normally arcing shouldn't be destructive unless something extreme happens. The schematic you posted looks like the ESL63 design which is very old at this point and Stax were even placing caps after the ballast back in '82.
  7. spritzer

    The Headcase Stax thread

    There is no difference to the amp section, it just how they did the tube delay on the early units.
  8. spritzer

    What Are You Building Today

    Yup and swap out the tubes. Is the shield on the transformer connected to ground? Ideally it should be earthed...
  9. spritzer

    Hifiman Jade II

    Crap...I always get that wrong!!
  10. spritzer

    current feedback electrostatic amp

    I feel the ginatricot bag is part of minimizing nasty conflicts...
  11. spritzer

    What Are You Building Today

    Yup and earth the chassis. I would never leave anything like this floating.
  12. spritzer

    The Headcase Stax thread

    Sounds like it comes from the amp. Should happen with it off though as the caps in there are tiny and can't hold much of a charge.
  13. spritzer

    The Headcase Stax thread

    First thing to try, is there any sound coming from the headphones right after you disconnect them from the amp? It's not a good idea to keep the headphones in plastic bags so I would stop doing that as it can produce charge issues. Second, what power supply are you using for the amp? Hum from the amp is the most likely scenario or coming in from the source.
  14. spritzer

    What Are You Building Today

    Well step one for hum issues, keep the input wiring well away from the transformer and its winding's.
  15. spritzer

    Hifiman Jade II

    Good point...
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