Article - Sony VFETs part 1 Article - Sony VFETs part 1 - Page 2 - diyAudio
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.

Article - Sony VFETs part 1
Article - Sony VFETs part 1
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 24th March 2014, 02:29 AM   #11
pcb121055 is offline pcb121055  United States
diyAudio Member
 
Join Date: Sep 2008
I really enjoyed reading that article It's not trivial to put something like that together. Thanks for being so generous Papa.
  Reply With Quote
Old 24th March 2014, 04:07 AM   #12
Soundhappy is offline Soundhappy  France
diyAudio Member
 
Soundhappy's Avatar
 
Join Date: Oct 2012
Location: Montpellier near Mediterranean Sea France
Article - Sony VFETs part 1
Thanks again<3 mr Pass
Personaly is like Christmass gift to me with a delay
Very appreciated and breath taking article , made with care this is a example of strong giant level work especialy in busy period of time.

Great !

What i have learn quickly:

1* Only two pairs of 2SJ28 / 2SK82 SIT's give two mono chanels

2* NOT MATCHED pairs is ok for this amp !

3* Input XLR and RCA can be adjusted with very simple buffer if need

4* Sony CSX2 amplifier have simpler power supply

5* probably diyAudio store sell PSU pcb's for diyers ( must be verified once )

6* This is not big bucks build is rather economic

7* This is sound unique SIT push-pull class A amplifier

8* Match very well with big magnets alnico speakers drivers

Many good news and sir Nelson Pass you are the Champion!
Attached Images
File Type: gif medal12.gif (6.1 KB, 2031 views)
File Type: gif medal2.gif (25.7 KB, 2028 views)
File Type: gif medal11.gif (2.6 KB, 2017 views)
File Type: gif meda18.gif (3.4 KB, 2019 views)
File Type: gif medal10.gif (30.7 KB, 2029 views)
__________________
class A amplifiers with full range speakers
sings like angels in heaven
  Reply With Quote
Old 24th March 2014, 05:55 AM   #13
dady is offline dady  Europe
diyAudio Member
 
dady's Avatar
 
Join Date: Oct 2002
Location: There, somewhere...
Send a message via MSN to dady Article - Sony VFETs part 1
I Got in this pages enough information for a couple of weeks. Following the news about Vfet, from the DIYaudio wind, I acquired two couples of 2sk82/J28. I wait for the news that come from the cyberspace: The temptation is high and hard to control the human/animal impulses.

Best Regards to the group and in advance: Many thanks for the incredible knowledge you are spreading among the mortals from the world.
__________________
Esteban Bikić

Last edited by dady; 24th March 2014 at 06:00 AM.
  Reply With Quote
Old 24th March 2014, 08:57 AM   #14
Dzius is offline Dzius  Poland
diyAudio Member
 
Dzius's Avatar
 
Join Date: Sep 2010
Location: Warsaw
Would it work like this ?
2SKJ_PP.png
  Reply With Quote
Old 24th March 2014, 03:17 PM   #15
Nelson Pass is offline Nelson Pass  United States
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Article - Sony VFETs part 1
Quote:
Originally Posted by Dzius View Post
Would it work like this ?
Attachment 407891
If you had very quiet rails it would. The output would be inverted, which
is not a problem, and I think you would want to raise the resistor values
to something more like 10 Kohm.

  Reply With Quote
Old 24th March 2014, 03:33 PM   #16
vdi_nenna is offline vdi_nenna  United States
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Article - Sony VFETs part 1 Send a message via Yahoo to vdi_nenna
Quote:
Originally Posted by Nelson Pass View Post
At last, the first of the Sony VFET articles is done and posted at

FIRST WATT WATT'S NEW

Enjoy.

You are completely amazing! Just the list of what you have accomplished in several months is staggering!

Thank you. But, it just doesn't cut it. We need your face on Mount Rushmore!

:cool
__________________
I build, therefore I am.
  Reply With Quote
Old 24th March 2014, 04:51 PM   #17
Michael Rothacher is offline Michael Rothacher  United States
AudioMaker.Tech
diyAudio Member
 
Michael Rothacher's Avatar
 
Join Date: May 2001
Article - Sony VFETs part 1
Great article, Nelson. I keep finding something more with each read-through.

Ordering my transformers now.
__________________
Visit AudioMaker.Tech
  Reply With Quote
Old 24th March 2014, 04:53 PM   #18
Dennis Hui is offline Dennis Hui  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
That's a pretty serious power supply. Time for me to order some parts.
I guess it wouldn't be a bad idea to have separate heatsinks for the regulators.

Dennis
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 24th March 2014, 05:00 PM   #19
Michael Rothacher is offline Michael Rothacher  United States
AudioMaker.Tech
diyAudio Member
 
Michael Rothacher's Avatar
 
Join Date: May 2001
Article - Sony VFETs part 1
I just spoke to Jensen. They're out of stock, but it sounds like they're going to do a production run very shortly.

I warned them about you guys.
__________________
Visit AudioMaker.Tech
  Reply With Quote
Old 24th March 2014, 05:03 PM   #20
R-K Rønningstad is offline R-K Rønningstad  Norway
diyAudio Member
 
R-K Rønningstad's Avatar
 
Join Date: Jan 2006
Location: Oslo
I guess something like the Lundahl LL 1527 could be used. But maybe overly expensive on your shores.
https://www1.elfa.se/data1/wwwroot/a...s/05662002.pdf
  Reply With Quote

Reply


Article - Sony VFETs part 1Hide 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
VFETs replacement, Sony TA-5650 pietres Solid State 2 7th October 2008 02:07 PM
vfets / transistors mojoat Swap Meet 2 4th January 2008 06:25 PM
I.S.O. Sony 50" plasma part mobyd Swap Meet 1 6th September 2006 08:17 AM


New To Site? Need Help?

All times are GMT. The time now is 05:08 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki