Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 12th February 2014, 12:51 AM   #1
Nelson Pass is offline Nelson Pass  United States
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Default Sony SITs - 2SK82 E Rank With 2SJ28 F Rank

Our friends at circuitdiy.com are running low on the 2SJ28 E Rank P channel
VFETs (my fault apparently), but they do have a supply of the F Rank
parts, and they sent me some samples to see how well they will work when
paired with the 2SK82 E Rank (which is still in supply).

I put them in the SIT amplifier circuit which was displayed at BAF 2013 and
also another similar amplifier, and apart from a slight difference in the bias
voltage, there was virtually no performance difference.

Actually, the F Rank P channel gave slightly better results, but this is within
experimental error.

So you can safely purchase these parts and put them in push-pull VFET
(SIT) amplifiers.

I am currently preparing the article on two versions of the Common-Source
amplifier shown at BAF and am also working up at least one Common-Drain version.

I hope to have it out in a week or so for you.

  Reply With Quote
Old 12th February 2014, 12:54 AM   #2
Dennis Hui is offline Dennis Hui  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Thank you very much Mr. Pass. I think many of us are looking forward
to your article.

Cheers,
Dennis
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 12th February 2014, 02:15 AM   #3
flg is offline flg  United States
diyAudio Member
 
flg's Avatar
 
Join Date: Jul 2005
Location: North East
__________________
"It was the perfect high end audio product: Exotic, inefficient, expensive, unavailable, and toxic." N.P.
  Reply With Quote
Old 12th February 2014, 06:01 AM   #4
WalterW is offline WalterW  Netherlands
diyAudio Member
 
Join Date: Oct 2012
Location: Utrecht
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Wow, Thank you Mr. Pass !

That means my 5th Pass amp will be build
I have 4 pairs of these Sony SITs...
__________________
Pass F5, F5Tv3, ACA, Aleph J, DDDAC1794, DCB1, BA3-preamp, VFET CSX1, Pass F6, Pass M2-HPA, VFET-X balanced, Pass J2
'If you see me talking to myself, don't worry. I'm getting expert advice'
  Reply With Quote
Old 12th February 2014, 08:54 AM   #5
Soundhappy is offline Soundhappy  France
diyAudio Member
 
Soundhappy's Avatar
 
Join Date: Oct 2012
Location: Montpellier near Mediterranean Sea France
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
With interesting Sony CS XFRMR amplifier topology this article
be come instant hit

That is great news

Thank You very much Mr Pass
__________________
class A amplifiers with full range speakers
sings like angels in heaven
  Reply With Quote
Old 12th February 2014, 10:26 AM   #6
marconi118 is offline marconi118  Germany
diyAudio Member
 
Join Date: Mar 2008
what about 2sk60 and 2sj18?
  Reply With Quote
Old 12th February 2014, 10:52 AM   #7
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
pretty much same logic
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 12th February 2014, 05:30 PM   #8
Nelson Pass is offline Nelson Pass  United States
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
Quote:
Originally Posted by marconi118 View Post
what about 2sk60 and 2sj18?
Do you have a source for them?

  Reply With Quote
Old 12th February 2014, 08:25 PM   #9
dsdjoy is offline dsdjoy  Germany
diyAudio Member
 
Join Date: Jun 2009
Quote:
Originally Posted by Nelson Pass View Post
I am currently preparing the article on two versions of the Common-Source
amplifier shown at BAF and am also working up at least one Common-Drain version.

I hope to have it out in a week or so for you.


Thank you, sounds great !
I wanted to build a smaller version of the Pass Sony VFET Anniversary amp and have also build up a nice stash of 2sj28/2sk82 KE-33 grade recently.

May I please ask for a Common-Drain version with variable, adjustable number of parallel output pairs ?

Last edited by dsdjoy; 12th February 2014 at 08:29 PM.
  Reply With Quote
Old 12th February 2014, 08:44 PM   #10
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Sony SITs - 2SK82 E Rank With 2SJ28 F Rank
another Wakoo German

are you, in any way , related to our GE Generg ?



__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote

Reply


Sony SITs - 2SK82 E Rank With 2SJ28 F RankHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
nxv200 with 2sk82/2sj28 slr 5000 Holton Precision Audio 2 2nd August 2013 04:09 AM
lemonstre with 2sk82/2sj28 slr 5000 Solid State 16 16th July 2013 09:31 PM
2SK82/2SJ28 x 8 Pairs $200 Michael Rothacher Swap Meet 3 17th July 2010 01:02 PM
Please rank your 5 best tweeters joms Car Audio 1 25th August 2004 02:19 AM


New To Site? Need Help?

All times are GMT. The time now is 11:29 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki