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lkong

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About lkong

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    Bay Area, CA

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  1. Got my board! Thanks for the extra PS board.
  2. Working on build a water cooling Uberamp. Snatched a cold plate off ebay. I'm looking for advice to mount the transistors. I dont think I should drill and tap into the cold plate. So I have 2 option: 1: 1/8 by 1 copper plates drilled to mount on the cold plate and sandwich the transistors in between. -----copper plate------- -----transistors---------- -----cold plate----------- 2: mount copper plates directly on the cold plate, drill mounting holes on the copper plates, counterbore the back side (the face contacting the cold plate). -----transistors---------- -----copper plate------- -----cold plate----------- Any suggestions? Here's a planned layout:
  3. lkong

    Speaker Porn

    I wonder if the bass will make the stands do tippy dance.
  4. Is it too late? Please sign me up for: 2x GRHVxxx1x GRLV79xx1x GRLV78xx1x Main Board 1x miniT2
  5. Unfortunately for me, I have to supply [email protected] L-Adapter looked promising but only go up to 20V. I've ordered Smooth Like Butter Single Rail. PCB+parts+shipping will cost around $100. Hope this solves my problem.
  6. Got my 24V assembled and running. I dont think it handles high current nicely. with 2A load @ 24v, I have about 1V drop at the output.
  7. lkong

    Sparkos?

    https://www.audiosciencereview.com/forum/index.php?threads/rolling-op-amps-in-gustard-h20-headphone-amplifier.7407/ Not sure if this test is comprehensive, it doesnt look too good for Sparko.
  8. Looking close to this: https://www.diyaudio.com/forums/group-buys/333844-ideal-bridge-rectifier-gb.html
  9. Got my Voron 2.1 printer somewhat put together. Voron2.1 - Imgur.mp4
  10. What worries me is what caused it, I simply tested the amp with 1k sine wave. I hope it's just the input jfet.
  11. I think I let the magic smoke out by swapping into JFET input. Now the amp functions normally with input on + and G input, but not - and G. Should I worry about anything else than the J109? (another pair of J109 and K389 worked perfectly)
  12. Is there a high pass/low pass between electrostatic and dynamic? Or they are wired in parallel.
  13. I'm intrigued, I wonder if it would be a good entry level turntable?
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