swt61 Posted January 27, 2012 Author Report Share Posted January 27, 2012 Quote Link to comment Share on other sites More sharing options...
mypasswordis Posted July 23, 2012 Report Share Posted July 23, 2012 Anyone here try building or upgrading to F5 Turbo V2 or V3? Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted July 23, 2012 Report Share Posted July 23, 2012 I have played with the circuit. Are you looking for something for the stats? If so I would recommend the Aleph J-X. Quote Link to comment Share on other sites More sharing options...
mypasswordis Posted July 24, 2012 Report Share Posted July 24, 2012 Yup it's for the 'stats. Something tells me I don't want to try tackling a 5000Vpp direct coupled 'stat amp project just yet. Cool, I'll look into it. Might just wait until the F6 design is released, for yet another option to choose from. Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted July 24, 2012 Report Share Posted July 24, 2012 The F6 uses an inner stage transformer. Probably not what you want Quote Link to comment Share on other sites More sharing options...
mypasswordis Posted July 24, 2012 Report Share Posted July 24, 2012 Hah, knew I should've checked diyaudio first, didn't see anything about it on his site. I'll email/message PD about if he has any J-X boards left when I get the time, thanks. Can never get away from those JFETs. Noticed there's a bunch of 2SK170/2SJ109 pairs on ebay, I wonder if they're fake. Quote Link to comment Share on other sites More sharing options...
mypasswordis Posted July 24, 2012 Report Share Posted July 24, 2012 2SK389 I mean. Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted July 25, 2012 Report Share Posted July 25, 2012 No n-ch jfets in this design. Dunno about EBay, don't shop for transistors there... Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted July 25, 2012 Report Share Posted July 25, 2012 A person trying to buld a BH is having trouble, because the 2sk389's from ebay are actually npn transistors. It works, but low input impedance. LSK389 are available and should be the only thing you use if you need those. No p-channel fets yet. Quote Link to comment Share on other sites More sharing options...
spritzer Posted July 25, 2012 Report Share Posted July 25, 2012 Is Johan in Sweden out of 389's by now? I made a large dent in his stock earlier this year... Quote Link to comment Share on other sites More sharing options...
RudeWolf Posted July 25, 2012 Report Share Posted July 25, 2012 No, he's still selling. 8$ a pop. Quote Link to comment Share on other sites More sharing options...
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