Is anyone building the KGSSHV?

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  1. astrostar59
    Nice build Liligagger! Did you build it yourself! If yes, top marks for that, I was too scared I admit it.
    I enclose my Headinclouds built KGSShv next to David's BHSE for idea of scale.
    I always liked the volume pot in the middle, nice. We couldn't do that on my build as the Khozmo
    would crash with the heatsinks on the PS board, so Geoff put it on the left side with an extension kit.
    I agree, the KGSShv (off-board) is superb with the 009s. I heard it with the BHSE and it was as good in most
    areas, they just had different characters i.e. KGSShv warmer (strangely for an SS design) and a bit more bass
    impact, and the BHSE excelling in vocals and midrange. I could live with either amp IMO.
    Wonder how good the Carbon amp coming via Kevin G will sound? Exciting to have a vibrant DIY community.
  2. loligagger
    Indeed I built both of those kgsshvs. Thanks for the compliments folks.
    On a side note, right now I'm working on a kgst. [​IMG]
  3. kevin gilmore
    That picture gives me vertigo.
    I like that. Thanks for the names.
    So it will be KGSSHV-CARBON edition  (very soon now)
    and KGSSHV-CARBON-CIRCLOTRON edition  (the power supply scares me)
  4. gilency Contributor
    well, I supoose I can always build more KGSSHV's, especially the moar power editions :D
  5. NoPants
    will there be a circlotron with EL34's? 
  6. kevin gilmore
    there is no reason that it could not be, but I'm working on the solid
    state version first. The circuit would otherwise be identical. You
    just have to add floating filaments. Which means 4 extra windings
    on the transformers.
  7. kevin gilmore
  8. wink
  9. NoPants
    isn't 40W a bit on the crazy side? 
    is my last question a stupid one
  10. jcx
    40W would be Gilmore's "Green" version if that were the all up instead of just the per stator power budget - now if he means 40 W * 4 ...
    Gilmore's, some other's ES headphone amps already exceed 40 W total by 2x: +/-500 V * 10 mA * 4 = 40 W in just the output stages, some burn some more power in regulated supplies, as much again for vacuum tube filament heaters, some push Class A bias up to 15 mA
    10 W per Q is no problem for those transistor's package - some PCB mount heat sinks could just do it but people like seeing fins on their boxes so off board heat sinks are fashionable
    at least with the Circlotron you now get true push-pull Class A which ideally can push 2x the bias current into to the load - where most previous efforts have used CCS biased SE outputs per Stator
  11. kevin gilmore
    So that is 20 watts per fet, 40 watts
    And its at least 40 watts for the power supply per channel
    since the power supply is at most 50% efficient plus the
    rest of the power supplies, it is probably close to 90 watts
    per channel.
  12. urlgr-A
    I am a newbie here considering building a KGSSHV for my DIY stat headphones - inspired by chinsettawong's DIY headphones thread. I have been a regular visitor to this forum for some time and have been thinking about making my own electrostatic set up for some years.  
    I have to say I am in awe of the fantastic work going on here, fitting superlatives escape me. I know that what see here is as good as it gets. Marvelous stuff!
    So, on to my humble requests...
    I am looking for KGSSHV pcbs for amp and psu. Do you know of the whereabouts of any?
    After looking over the parts list, very kindly supplied with Mouser part numbers, I cannot see the transformer or the spec for the transformer.  What transformer do I need and where would you recommend I get one from? 
  13. Nisbeth
    Sent you a PM.
  14. urlgr-A
    Hello Nisbeth,
    I replied to your PM. I hope I did so properly. Are you able to see that reply? If not, well,  I put a yes word in it [​IMG]
  15. bbest
    Who have extra PCBs of KGSSHV latest version?
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