vvs_75 Posted December 16, 2011 Report Posted December 16, 2011 I see the jumper bypasses the pieces that can be omitted. I am wondering if there are any problems if said pieces are installed, some or all. (I already installed D12 and D13 although no big deal I can remove them.Just curious though. Just cut them out flash on both sides of the board.
Victor Chew Posted December 16, 2011 Report Posted December 16, 2011 I am looking at the schematics of the psu from lil knight's bom (dont have my boards yet)- the zener on top of the 15k beside beside the zener 1n4007 has not been marked? Can someone enlighten me which value it is please?
livewire Posted December 16, 2011 Report Posted December 16, 2011 It too is a 1N4007. Neither of those diodes are zeners, they are just straight rectifier diodes. What BOM / schematic are you looking at? Mine show the values for both.
Victor Chew Posted December 16, 2011 Report Posted December 16, 2011 Ok tks. I must looking at an older schematic. A little confusing for me as there have been changes along the way. I will wait for my actual boards to arrive.
kevin gilmore Posted December 16, 2011 Author Report Posted December 16, 2011 latest schematics http://gilmore.chem.northwestern.edu/kgsshvproduction.pdf http://gilmore.chem.northwestern.edu/kgsshvps8e.pdf
Victor Chew Posted December 16, 2011 Report Posted December 16, 2011 Thank you Dr. Gilmore. On a separate note could you advise whether it is ok to mount the onboard version on the side of the casing to fit everything into one box, assuming that the box is tall enough to accept the boards, as I understand that off board version is more challenging to build due to the mounting of the side mount heatsinks?
kevin gilmore Posted December 16, 2011 Author Report Posted December 16, 2011 There are 2 rows of heatsinks, so no, you can't do it that way.
cobra_kai Posted December 16, 2011 Report Posted December 16, 2011 (edited) I think he means using the on board heatsinks but simply mounting the board itself vertically on the side rather than horizontally on the bottom of the case. In which case that should be fine, but your case is going to have to be something like 7+ inches tall. The heatsinks won't work as effectively either as they are designed to be vertical. Also the heat from the bottom row of sinks will rise to the top row and heat them up. Edited December 16, 2011 by cobra_kai
kevin gilmore Posted December 16, 2011 Author Report Posted December 16, 2011 That reminds me of a 300 watt shunt regulator power supply i built for a dynahi a while ago. Way to big. nothing prevents you from using the other boards, and then making angle brackets like the T2, thats way easier than precision drilling and tapping holes on the heatsink.
spritzer Posted December 20, 2011 Report Posted December 20, 2011 I got an update from Mouser and the 2SC4686A's should be in stock on Feb 13.
MASantos Posted December 21, 2011 Report Posted December 21, 2011 Lil knight, please check your inbox, sent you a pm regarding the missing boards from my group buy order.
eggil Posted January 3, 2012 Report Posted January 3, 2012 I was looking at the way the amplifier boards were mounted by Greg and Andy. It seems to me Andy's way may be easier to service if any troubleshooting or desoldering is needed.
TMoney Posted January 6, 2012 Report Posted January 6, 2012 (edited) Another KGSSHV off-board up and running thanks to Greg (Horio). I'm really impressed by the sound so far. The 009s sound sooo crisp. The sound reminds me a bit of a baby version of Voltron's T2. Hopefully I'll get a chance to bring it up to Kerry's sometime in the future for a comparison with the KGBH. Edit: Thanks again to everyone who put the time in to making the KGSSHV happen. Edited January 6, 2012 by TMoney
ujamerstand Posted January 6, 2012 Report Posted January 6, 2012 Looking good! Gotta get mine up soon.
Hennyo Posted January 6, 2012 Report Posted January 6, 2012 Wicked good. I bet your engrossed in your 009's. Outstanding casework on both builds.
swt61 Posted January 7, 2012 Report Posted January 7, 2012 I quite like your design aesthetic TMoney. It reminds me of Nugget Audio's simplistically beautiful designs.
Kerry Posted January 8, 2012 Report Posted January 8, 2012 Nice! We'll definitely have to schedule some time to do some comparisons
Horio Posted January 8, 2012 Report Posted January 8, 2012 How do I attain the PCB? I think at this point, you're going to have to see if anyone has a spare set they would sell you.
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