Source for 2sk170
Guys, if you don't have a good source for the 2sk170bl, I would like to recommend the cheapest source I could find, which is Spencer
http://www.diyaudio.com/forums/showthread.php?s=&postid=1853069#post1853069
I got two shipments from him already, and many others in the forum did too, all well. The 2sk170 are a great current source that can be used in other circuits as well (like the salas phono stage which is excellent).
Guys, if you don't have a good source for the 2sk170bl, I would like to recommend the cheapest source I could find, which is Spencer
http://www.diyaudio.com/forums/showthread.php?s=&postid=1853069#post1853069
I got two shipments from him already, and many others in the forum did too, all well. The 2sk170 are a great current source that can be used in other circuits as well (like the salas phono stage which is excellent).
Looks like you have a low regulation tough transformer, or your wall plug has somewhat more voltage than its designed for. It works safely as a whole amp for long enough to trust it for start I think.
How is Franky doing for sound by now it has burned a little? Are you happy with your investment in it?
How is Franky doing for sound by now it has burned a little? Are you happy with your investment in it?
sound good 
shunt do detail and clean...!!!
what not work so good is the separation on psu , I add a separate trafo for driver , I thinks that better single but separate the trafo for channel ,(ok four trafo is the best) with only all separate diode/caps I dont have gain on sound stage.....
stealth diode+ kg on pw stage and byv27+Kg super t. on driver is too much soft ,need to put some bypass...
Salas as on driver out there is some mox 1,5w -4,5w ,I thinks the kiwane can be better , as works good in my scanspeak better than mox , alternative mills or ?
shunt do detail and clean...!!!
what not work so good is the separation on psu , I add a separate trafo for driver , I thinks that better single but separate the trafo for channel ,(ok four trafo is the best) with only all separate diode/caps I dont have gain on sound stage.....
stealth diode+ kg on pw stage and byv27+Kg super t. on driver is too much soft ,need to put some bypass...
Salas as on driver out there is some mox 1,5w -4,5w ,I thinks the kiwane can be better , as works good in my scanspeak better than mox , alternative mills or ?
Nico,
Try substituting the BYW29s for the Stealth diodes, maybe change up the Kgs for F&Ts, Mundorfs, etc and perhaps see about changing the wire, too.
Sounds a bit crazy but it's quite surprising how these small things add up - an R-C-R-C arrangement, the simple Haggerman snubbers, good wire, cool diodes, reistors, etc
Try substituting the BYW29s for the Stealth diodes, maybe change up the Kgs for F&Ts, Mundorfs, etc and perhaps see about changing the wire, too.
Sounds a bit crazy but it's quite surprising how these small things add up - an R-C-R-C arrangement, the simple Haggerman snubbers, good wire, cool diodes, reistors, etc
are you dissipating over 20W just in the shunt?
Salas said:We also need to thank James for his PCB efforts.
Here is his latest refinement for V1. He has included every possible nut n' bolt. LEDs CCS, Vbe CCS, positive / negative shunt, Zener socket for changing Vout in a sec, clean, compact, star layout. I did not see anything wrong by looking at it, you may have your second look too. James is more suitable to comment on the options and how to implement them I guess. He has also made a few V1s (not in WWII) and maybe he can convey his experiences and applications if he likes to.
James/Salas,
First off the layout of this board is stunningly elegant. Just fantastic! Is this compatible with the schematic in post 1, which I believe is V1 with the R6 Mod?
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