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About bui501

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    Bangkok, Thailand
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    Music, Machine Shop
  1. KGSSHV Carbon Build Thread

    Thank you for the tips, Skooby and Kevin. Sent from my iPhone using Tapatalk
  2. KGSSHV Carbon Build Thread

    Would this work as a substitute for the LSK389? Mouser doesn’t carry the LSK389. This the closest I could find from them for dual JFETs: https://www.mouser.com/Search/ProductDetail.aspx?R=2N3958virtualkey58900000virtualkey106-2N3958 Sent from my iPhone using Tapatalk
  3. KGSSHV Carbon Build Thread

    Awesome! Thank you. Sent from my iPhone using Tapatalk
  4. KGSSHV Carbon Build Thread

    I’ve been trying to find a source for the PZTA42 transistors for the Carbon V5 boards, but everybody seems to be out of stock on them. Would this be a suitable substitute? Diodes Incorporated, ZETEX, Manufacturer part FZT657 — it’s a 300V NPN transistor with a collector current rating of 0.5A: https://www.mouser.com/Search/ProductDetail.aspx?R=FZT657TAvirtualkey52230000virtualkey522-FZT657TA
  5. KGSSHV Carbon Build Thread

    That’s ok. I remembered the advice you and others gave me for my KGSSHV build and just continued with that. Having the components slightly raised made it a lot easier to check every joint on both sides of the board. About the resistors getting in the way of the SMDs: DOH!!!! Sent from my iPhone using Tapatalk
  6. KGSSHV Carbon Build Thread

    I ran out of scotch. I’m going to bed :-D Sent from my iPhone using Tapatalk
  7. KGSSHV Carbon Build Thread

    Finally got off my ass and started to populate the boards for my Carbon build... I’m on a roll now... I just hope I don’t run out of scotch before the boards are finished... Sent from my iPhone using Tapatalk
  8. KGSSHV Carbon Build Thread

    Many congratulations, Blueman2. I’ve learned so much from your posts and from the replies from the other members. I built a KGSSHV with lots of advice from members on another thread in this forum, and I’m about to put iron to boards today on my Carbon build. Hopefully, your good vibes will rub off on my build. ) -Vinh Sent from my iPhone using Tapatalk
  9. KGSSHV Carbon Build Thread

    John, I found the Goldenreference7plus and goldenreference7minus boards--they look like just the LV version you've mentioned. Which ones of the boards is the GRHV board? Sent from my iPhone using Tapatalk
  10. KGSSHV Carbon Build Thread

    Thanks, John. I'll go with the GRLV. Much appreciate the tips.
  11. KGSSHV Carbon Build Thread

    So... Having completed by first KGSSHV build using boards from Spritzer, I'd like to move on to a KGSSHV Carbon build. I've already had the carbon amp boards fabricated using the gerber files on Dr. Gilmore's site. I'm puzzled as to which of the myriads of power supply boards I'll need to power the carbon amp boards, however. My KGSSHV build was an on-board version -- I'd like to go with an off-board version for the carbon build. Would some of the more experienced members give me some tips on which power supply boards I can use and any gotcha's to watch out for with a carbon build? -Vinh
  12. i'm on a roll... the kgsshv

    Thanks! I love machining -- if only they'd let me wear my electrostatic headphones around the milling machine Aw! Thanks! :-)
  13. i'm on a roll... the kgsshv

    George, This is the link for the case I purchased from eBay; the seller is located in China: http://www.ebay.com/itm/New-aluminum-amp-chassis-home-audio-amplifier-case-size-340-430-92MM-/322291438722?hash=item4b0a111482:g:zQ0AAOSwyLlXo3Qc The seller charged me a reasonable price for 3-day DHL shipping from China. I didn't like the plastic feet that came with the case, so I purchased these aluminum feet: http://www.ebay.com/itm/321374671507 And the handles on the front plate came from this seller on aliexpress (also located in China or Hong Kong): https://www.aliexpress.com/store/product/Breeze-audio-handle-for-chassis-82type/331129_32718799987.html For the etching, I simply used a laser engraver and etched directly on the anodized aluminum. I just used a low power (100mW) laser engraver; normal anodized aluminum (not the hard-anodized version) engraves really well with a laser. Any spot that's hit by the laser turns a white color.
  14. i'm on a roll... the kgsshv

    Thanks, Chinsettawong. It was your DIY electrostatic headphones that got me rolling down this path. Sent from my iPhone using Tapatalk