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About Blueman2

  • Rank
    Limited Edition Bronze Participant

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  • Gender
  • Location
    Silicon Valley / Bay Area


  • Headphones
    SR-007mkii, SR-507, SR-Lambda Pro, SR-407
  • Headphone Amps
    KGSSHV Carbon, SRX-Plus, SRD-7 Pro
  • Sources
    Schiit Gungnir MultiBit, Gen5 USB, Balanced connections

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  1. Blueman2

    KGSSHV Carbon Build Thread

    I definitely tip my hat to you, bui510!!!! I get great personal satisfaction when I do something myself, but you have taken that to an entirely new level. And yes, pictures please as you continue with your DIY ES earspeakers. Bravo!!
  2. Blueman2

    KGSSHV Carbon Build Thread

    bui501, I love the board placement and use of space. Well done. And the acrylic looks pretty darned cool to me. I would keep them. Maybe even an acrylic top too! Now what the HECK are those custom electrostatic drivers? Did you build those yourself?
  3. Blueman2

    2018 PCB Group Buy with TKD pots

    Boards Arrived!!! Thanks so much again, @sbelyo!!!!
  4. Blueman2

    KGSSHV Carbon Build Thread

    Use the STN9260. I did on my amp and it works just fine.
  5. Blueman2

    2018 PCB Group Buy with TKD pots

    Here they come!!!!
  6. Blueman2

    2018 PCB Group Buy with TKD pots

    Just wanted to say thanks again, @sbelyo, for leading up this group buy. Probably the largest and/or most complex group buy I have seen recently on this or other forums! Let us know when you have the shipping cost calculations complete!
  7. Blueman2

    grounded grid

    I had this issue with my Blue Hawaii. It was drawing more power than the GRHV was set to output. As I recall, I changed the 5R1 resistor (the large 3W one) to 2R5 or thereabouts and that solved the issue. I just soldered another 5R1 on top of the existing one and it worked fine. The 5R1 sets the amount of current that the PSU will supply.
  8. Blueman2

    Revised shunt power supply for SRX Plus

    Great to hear you did not give up on the shunt PSU!! I have a SRX build that I want to use this PSU for, and I hope to build it point to point in the coming few months. Thanks, Jim!! And still loving your SRX Plus design using the current BHUltraMini PSU. Cheers!
  9. Blueman2

    2018 PCB Group Buy with TKD pots

    Thanks for the updates. These group buys put a big load on the person who organizes them, and this one was the mother of all group buys. So don't sweat it. I certainly appreciate all your efforts on pulling this buy together!
  10. Blueman2

    Megatron Electrostatic Headphone Amplifier

    mwl168, you are really making me want to build one of these. Darn you! Well done all around and thanks for sharing with us.
  11. Blueman2

    2018 PCB Group Buy with TKD pots

    Tube boards are best to be 2mm.
  12. Blueman2

    Blue Hawaii BJT Build thread

    BTW, are those EL34s Tung Sols? Edit: I see in the reflection they are Svetlana's. Great picture!
  13. Blueman2

    Blue Hawaii BJT Build thread

    That is a work of art. Congratulations!!!! So many great ideas and touches, I want to steal them all!
  14. Blueman2

    Shunt vs. linear reg

    I know JimL designed and built a shunt PSU for the SRX-Plus. Great article on it in AudioXpress I can send you if you want.
  15. Blueman2

    2018 PCB Group Buy with TKD pots

    Given the fixed setup cost, you might want to ask @sbelyo to get a quote for 2 or 3 sets rather than just 1 set. Price will only go up marginally, and you could probably sell the others later. Or keep them in case one or two boards blow up and need to be rebuilt!