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KGSSHV Carbon Build Thread

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3 hours ago, s_r said:

PSU issue solved :) I replaced one of the KSC5026Ms and now the supply outputs +452V. Probably replaced more sand than necessary, but I'm just glad it works now.

how does it test out of circuit?

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  • johnwmclean
    johnwmclean

    Finally done! I regrettably sold my previous KGSSHV Carbon a while ago, this one’s not going anywhere soon. This is a 400V, 19mA version, using the ground plane amp board, Sumr transformer a

  • johnwmclean
    johnwmclean

    My own Carbon, not going anywhere... IMG_6585 IMG_6590 IMG_6592 IMG_6593 IMG_6595 IMG_6596 IMG_6597

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Just doing a diode test it was the same as the one I replaced it with (out of the board). It showed difference before I took it out though. I suppose I'd have to test it some other way to find the difference.

Edited by s_r

54 minutes ago, s_r said:

Just doing a diode test it was the same as the one I replaced it with (out of the board). It showed difference before I took it out though. I suppose I'd have to test it some other way to find the difference.

I bet the PSU will work if you put it back in ... what kind of solder and iron are you using?

17 hours ago, purk said:

Posted this picture awhile back...sorry for not having a better picture.Carbon.JPG

Nice layout of controls

On 21 May 2016 at 8:26 AM, johnwmclean said:

27047318302_b1bd548845_k.jpg

27047308032_a323e46a7a_k.jpg

Very nice and high quality build. I also like the 2 x LEDs, I assume to show left and right side powered up. Neat.

Just now, sorenb said:

I bet the PSU will work if you put it back in ... what kind of solder and iron are you using?

Just some basic kit, a hakko 888 & kester 63/37.

The carbon is now playing music. :) Running at 20mA the sinks get properly hot. Don't have a temperature sensor on hand but I'd guess it's around 55C give or take. For reference I used 100ohm resistors before the offset instead of 182ohm. The toroid is buzzing on me unfortunately, so I'll have to see about getting that replaced. Aside from that it sounds fantastic.

Congrats :)

Shame about the buzz.

Edited by Kerry

Hi All,

I am just going to start building this and I am preparing the shopping list. I just wonder what are the primary components to be matched in order to achieve better outcome? Thanks

If you're using the GRHV PSU, you might want to check (1) the bias supply's zeners to get them close to a total of 580V, and (2) get the resistors that control the rail voltages pretty close to each other.

Edited by gepardcv

Figured I should share a pic of the carbon all put together. Thanks for the help everyone :)

laJnKQI.jpg

I think George is sell them now.  Superb looking chassis!

Just now, chinsettawong said:

That's DIY T2's chassis, isn't it?

Nice work.  

Aside from different cutouts, they're basically identical.

Great looking build, especially the fact that it has 2 output sockets....    :wub:

How come there are no builds with a normal bias socket..?  Don't normal bias earspeakers deserve the best....?   :rolleyes:

Edited by wink

I like it, the all black look and the horizontal heat sink style. I just picked up my own Carbon yesterday, and having seen the other version with black heat sinks and top and realised black can look as good as all silver. Will come back with listening impressions later, don't want to swamp this forum.

nothing stopping you from posting it on headfi, this is a build thread after all

Although I have a Dynalo mk1 that I got from Birgir which I'm very happy with, rather than get a KGSSHV carbon from him, it will be johnwmclean that'll be building one for me, or part building.

Now the reason for that is because after several PM's with John, he suggested I asked my local metal engineer to do the faceplate/enclosure, and in doing that I could have the size and look however I liked best.

So after giving it some thought I've gone for the size to be 17"Wx 7"H x 14"D, all approx, but the thing I like the most is the idea I had on how the faceplate will look. ( to my liking that is )

Regarding the faceplate, I was going to have titanium used, but after advice on how difficult it is to work with, I'm going with aluminium, although the volume knob will still probably be titanium.

i've yet to ask the engineer, so hopefully he'll do what I'm seeking.

There is another thing I'd be after, which is no screws showing anywhere other than the top panel, and even there they'll be countersunk. ?

P.S. The only downside with this build, is I won't have the spare money to have it done for sometime, but there's no harm in finding out from my local engineer if he'll do what I'll be after. ?

Great choice for going with John.  His builds are unique and always first class.  Gotta love his custom chassis!

On 8/3/2016 at 11:40 PM, Laowei said:

Very nice build. Any inside shots? 

Sure thing. My cable management isn't as beautiful as some of the masters here, but a slight allergy to cable mess does help. :rolleyes:


44JrONu.jpg

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