September 25, 201312 yr Very nice! I can see this project in my future Edited September 25, 201312 yr by Kerry
September 25, 201312 yr Author by the way, the newer krell power supply was cloned from this one and only picture http://gilmore.chem.northwestern.edu/newkrellps.jpg no schematics were available, and no one I know actually had one, boozebuttons had the older one
September 25, 201312 yr I want a collection of audio company branded transistors. That would be awesome wall art.
September 28, 201312 yr Almost finished the amp, and waiting on a Mouser order for P/S parts. Edited September 28, 201312 yr by fordgtlover
October 13, 201312 yr My zener power supply is up and running and temporarily cased. I couldn't find a 27V transformer so I've used a 25V one, which results in an output voltage of the power supply at ~20.5v. Is using a 25v transformer a problem?
October 13, 201312 yr Author That is right depending on the second stage zeners. If unreg voltage is at least 35 you will be fine Edited October 13, 201312 yr by kevin gilmore
October 20, 201312 yr Cheers. Do you have a cost on the TX? Edited October 20, 201312 yr by fordgtlover
October 20, 201312 yr not yet. i'm contacting Richard on Mon. 27V/50VA i'm guessing will be around $50-60 + shipping. i'll let you know. no 4.7uF Wima from Mouser until mid Dec. may try to parallel 3.3uF and 1uF with the latter mounted perpendicular/flush underneath the pcb. Edited October 20, 201312 yr by fishski13
October 21, 201312 yr thanks Bigir. i have a bunch of 50V 4.7uF Wimas in the parts bin with 5mm pitch. any issues going with a lower VDC rating? since we're looking at decoupling rails of 21V and compensation on the DC servo, 50VDC should be safe?
October 27, 201312 yr Wandered over from some of the other forums....this build caught my eye. Nice! Thinking about doing one....
October 30, 201312 yr Here is a you tube video some one made for a ebay sale of a KSA-5 in 2011. Edited October 30, 201312 yr by bozebuttons
October 30, 201312 yr Author When you are trying to sell a used 20 year old amp for $5k what do you Expect. It is a great amp but not for very low sensitivity headphones
October 31, 201312 yr I've got some PMs out to try and get a board set (lil knight). Any other leads would be appreciated. Looks like this is going to be a cool build.
October 31, 201312 yr I may go that route, but figured I'd try to get on someone else's run to help keep everyone's costs down. Is there a suggested service that has successfully done a run with these files? Thanks for the reply!All board files are available if you want t have boards made
October 31, 201312 yr Author Www.pcbnet.com amp board is 10 x 7.5 inches 609 holes 10 boards from pcbnet.com would be $425 3 oz copper Edited November 1, 201312 yr by kevin gilmore
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